T.R | Title | User | Personal Name | Date | Lines |
---|
284.336 | Snaking Wires In Old House | RDVAX::FIELD | | Tue Jan 21 1986 14:53 | 8 |
| I need to install a few outlets, switchs, and ceiling lights in my
house. The locations are from the attic onto the second floor ceiling, on
the first floor ceiling between the second and first floors and in various
walls. What I would like is some advice as how to best snake the wiring
into and thru all these locations. Can anyone help me?
Thanks,
Jorge'
|
284.337 | | VAXRT::WELLCOME | | Tue Jan 21 1986 15:25 | 34 |
| Oh, boy. The main ingredients are good luck coupled with a good
imagination. Every situation is different, of course, and the job
of snaking wires can range from trivial to impossible. It also
depends on how "invisible" you want the finished job to be. There
are various tricks you can use, and obviously an experienced
electrician knows a lot more of them than I do. Some I've used
or heard about include:
Take off a baseboard or door molding, rout out a groove in the back,
and run the wire along the groove.
Run the wire up along a chimney.
Follow plumbing.
Run wires up to an unfinished attic (or down to the cellar) and
go from room to room that way.
If you've got to cut an access hole in a wall that has wallpaper, cut
out a square of wallpaper on 3 sides, wet the square to loosen it, and
fold down the wallpaper before you cut the hole. After you patch the
hole, reglue the wallpaper to make a nearly invisible fix.
I've neve been able to do it, but people always talk about putting
one snake through one hole, another snake through another hole, and
wiggling them around until the end of one catches on the other, so you
can pull one all the way through and then pull the wire back. X-ray
vision is a big help for this stunt.
Helpful tools include a L O N G 5/8" or 3/4" drill, two wiring snakes,
and a keyhole saw. Plus infinite patience and a helper you won't end
up yelling at.
Steve
|
284.338 | | PICA::BLANCHETTE | | Wed Jan 22 1986 01:01 | 26 |
| Good luck... I once wired an old house using this method. I
recently purchased another old house that needs rewiring. This time
I'm tearing the walls out and doing it right. Based on my experience,
the time you save (or $$$ if you're paying an electrician to do it,)
will more than pay for the re-sheathing, especially if the walls need
other work, such as insulation or cosmetic fixes.
However... you asked about snaking wires through existing
walls, so... Things to watch out for are... Wainscoating - there's
usually an impetetrable 2X4 at the top. You'll have to tear out a
section to drill through it. Fire-stops - many old houses will
have horizontal 2X4's embedded in the walls to discourage the
"chimney effect" within uninsulated wall cavities.
Whether or not you decide to keep your walls intact, you're
probably going to need a good drill bit to go through at least 4" of
wood. I use a 3/4" X 18" bit with a 3/8" shaft for this.
Not to discourage you, but... I can remember a time when I
spent over 10 hours trying to get an outlet in a specific spot in the
old house. I finally gave up on it.
When you go to your local electrical supply to buy your tools,
don't ask for a snake... Electricians call it a "fishing line". Also,
if you plan on keeping the walls, make sure you get outlet boxes
which have the appropriate features. Standard boxes are made to be
nailed into the framing. You'll need boxes with "ears" if you plan
on installng them in existing walls.
-Bob B
|
284.339 | | PICA::BLANCHETTE | | Wed Jan 22 1986 01:25 | 20 |
| BTW... If you're doing your own wiring, make sure you
understand the wiring codes. They're very basic, but sensible...
I'm a bit sensitive on this subject... The first thing I did in
my "new/old" house was to disconnect 3/4 of the existing power
in the house, because the previous DIYer was a total hacker in
the worst sense of the word... Remember... A junction box DOES
NOT consist of a few wire nuts and electrical tape!!!
And... most of all... Do NOT be a "tightwirer". Do not
assume that you've done such a wonderful job that no-one will
ever want to change it! Leave a couple of feet of slack wire in
all your runs, to allow for additional junction boxes, and movement
of the current ones.
Cable staples are not meant to be deeply imbedded in the outer
(and sometimes inner) casing of the wire. If possible, leave room to
thread another wire through in the future.
I could go on and on on this subject... Every time I look at
a new circuit in this house, I ask myself "how could he be so
stupid???", but I'll give it a rest for now...
-Bob B.
|
284.340 | | INANNA::FORTMILLER | | Wed Jan 22 1986 08:40 | 7 |
| When running wires which may be near the surface make sure that they
are protected from someone accidently driving a nail into them. In
48.1 it was suggested that wire could be run through a routed channel
in a baseboard. In that case I personally would use BX which has
a protective metal sheath. I seem to recall that the code says that
if the wire is closer than ~2 inches to the surface it needs some sort
of metal protection. Anyone know for sure?
|
284.341 | | VAXRT::WELLCOME | | Wed Jan 22 1986 13:39 | 9 |
| re: .4
Yes, I think you're right, and for the baseboard trick BX probably would
be a good choice. The code lets you get away with things in "old"
wiring that it doesn't allow in new wiring, but I'm not sure whether
the 2" clearance/metal plate business applies or not. It's been a
while. Perhaps some more recent DIY wirers will know. In any case,
BX seems like a good idea, no matter what the code says.
Steve
|
284.342 | | SSVAX::SARAO | | Thu Jan 23 1986 13:47 | 5 |
| When it comes to buying a fishing wire, make sure you buy the ENCASED fishing
line. I had the misfortune of buying a fishing line without the case. It is
a son-of-a-gun to put away....But then again I don't rewire that often.
Robert
|
284.343 | | GIGI::GINGER | | Mon Jan 27 1986 11:06 | 11 |
| As an old electrician (worked my way through college in IBEW) I suggest you
get about 20' of small link stoker chain. This is sold in hardware stores
for such things as hanging shop flourscent lights. Use it to drop into the
wall cavity, and snag it out the bottom with a bent coat hanger. Forget fish
tape (only plumbers call them snakes) they are to stiff and get hung up to
easy. They are fine for fishing through conduit but not in walls. Accurate
location of holes above and below the floor you are fishing is essential.
Most essential is Luck! Id rather wire two new houses than fish one circuit
any day.
|
284.344 | | TONTO::EARLY | | Tue Jan 28 1986 18:31 | 43 |
| Oh boy is right. There are several books in libraries and book stores that
are titled something like (Remodeling an old house, Practical Home restoration)
and some of them contain good diagrams on techniques of using different
"fishing" methods. I need to do "another" old house, and I'm "thinking" about
which technique to use. The first house I did was built around 1890, wired
in 1910 or so , and "remuddled" sometime between, putting the entire
cellar,kitchen,stove,laundry on ONE 20 amp fuse, and 1 outlet on another
20 amp fuse, and the rest were varied. That house was a devil, because
pulling off the baseboard sound fine, until I discovered it was installed
before the hardwood floor was laid, which was installed before the
door frames (dovetailed). I got so frustrated I cut the baseboard off
at the floor line, and then the work began. I got around
some of the firestops by pulling off the upstairs baseboard, and routing
the wires around the firestop, and drilling only when I had too.
My current house (Bless the former occupant) used the soil pipe
to go from the attic (beside it, not through it), and also used some
conduit pipe and ran some of the long runs OUTSIDE the house (I only
have a partial cellar).It deosn't look so bad when you consider the
alternatives (Good Grief Arghhhhhhhhhhhhhhh), and there's also outdoor
lighting for security.
The only thing I really question is why the H*LL they put the attic access
hole directly over the steep main stairwell, when thay could've put it up
through the bedroom adjacent to the stairwell .
Another access route mentioned in some of these books is an old FHA
heating system, or next to the chimney (check fire codes). Also if
it is possible you might get squirrels, BX rests its case as being
more rodent proof than plastic sheathing ! (Friend recently installed
own wiring, and had a small fire next to the squirel carcass !) THe wire
had been chewed through the insulation. Then he put in BX !!
I bought my "drill extension" from Sears Roebuck (about 18" for the kit),
and it worked ok. Not good for *extensive* work, but adequate (about $5.00
comes to mind).
Good Luck. Don't drill through
any existing wire, and use protected
equipment.
Bob
|
284.336 | Heat pumps | JOET::JOET | Joe Tomkowitz | Wed Feb 19 1986 14:33 | 19 |
284.337 | Coming Soon !!! | PSGMKH::WAGNER | | Wed Feb 26 1986 17:47 | 6 |
284.336 | Texture 1-11 Siding | PRORAT::SMOPR | | Tue Mar 04 1986 03:27 | 17 |
284.337 | | AUTHOR::WELLCOME | | Tue Mar 04 1986 10:01 | 9 |
284.338 | felt or building paper? | LATOUR::PALMIERI | | Tue Mar 04 1986 12:21 | 16 |
284.339 | paper | ELGAR::LEWIS | | Tue Mar 04 1986 12:40 | 9 |
284.340 | T-111 and TYVEK | 11278::GINGER | | Tue Mar 04 1986 13:42 | 12 |
284.341 | not trying to beat a dead horse, but... | ELGAR::LEWIS | | Wed Mar 05 1986 17:18 | 12 |
284.338 | Some heat pump basics | PSGMKG::WAGNER | | Thu Mar 13 1986 18:20 | 113 |
284.339 | | ULTRA::PRIBORSKY | Tony Priborsky | Fri Mar 14 1986 09:01 | 4 |
284.345 | REWIRING | MUTT::DALLAS | | Fri Apr 25 1986 14:10 | 25 |
| I have rewired 2 old houses from the service entrance on up. First
buy yourself an NEC code book and read it. The next thing to do
is plan out all of your runs/reruns. A couple of questions..
How old is the house and what type of wireing bx vs romex. What
type of walls horse hair plaster, blueboard and plaster, or wallboard?
If you are going to replace existing reruns of bx then the use the
bx as the snake.. ie pigtail your new wire to the disconneted bx
run lub the wire liquid soap does real good and pull. What type
of insulation is in the exterior walls? Interior walls on most houses
do not have fire stops between floor. If rewireing the second floor.
then bring each run up from the service box up to the attic then
over to the room you are going to do with that run. Place a junction
box to the interior of the ceiling joist then make your individual
runs from that..You can find out wall placement from the attic by
removing insulation in sections. You will see a 2x4 outline of each
and every wall. From there go down into the room you are going to
do, measure from a wall corner to where you want the outlet/switch
go back up into the attic and remeasure adding 1/2" to 3/4" for
wall thickness(wallboard/plaster). Drill your hole thru the 2x4
and do your wire run. To prevent heat lost plug around the hole
after you are done with it.
Bill
|
284.342 | Wear vs. Appearance | USMRW1::RKILGUS | | Thu Jul 31 1986 17:35 | 35 |
284.336 | Pipe Insulation | STAR::FARNHAM | Stu Farnham, VMS | Fri Sep 26 1986 09:21 | 25 |
284.337 | what problem are you trying to solve? | NAC::SEGER | this space intentionally left blank | Fri Sep 26 1986 09:50 | 14 |
284.338 | | STAR::FARNHAM | Stu Farnham, VMS | Fri Sep 26 1986 10:32 | 9 |
284.339 | I use Climatube | CLT::BENNISON | | Fri Sep 26 1986 11:13 | 19 |
284.340 | Maybe it's a different product | FSTVAX::HARDEN | | Fri Sep 26 1986 11:39 | 12 |
284.341 | TWO TYPES OF INSULATOR, ALSO OSGOOD | GYPSY::SMOLINSKI | | Fri Sep 26 1986 11:49 | 16 |
284.342 | Cockpit error? | STAR::FARNHAM | Stu Farnham, VMS | Fri Sep 26 1986 12:35 | 4 |
284.343 | clarification | NAC::SEGER | this space intentionally left blank | Fri Sep 26 1986 13:14 | 15 |
284.344 | Spag's, naturally | HUDSON::CAMPBELL | | Fri Sep 26 1986 15:39 | 6 |
284.345 | | CLT::BENNISON | | Fri Sep 26 1986 16:30 | 7 |
284.1 | Check your polarity when you move in. | ULTRA::BUTCHART | | Tue Feb 10 1987 08:17 | 18 |
| If you have moved into a house with two-prong polarized plugs, I'd
strongly suggest you check the polarity of the plugs with a volt-meter.
I got suspicious a few weeks ago when I realized that some of the
plugs in my house were upside down. (Plugged in something with
a right angle bend plug and realized that the wire should not be
pointing UP the wall.)
After a little thought I got out the voltmeter and found that
half the plugs were improperly polarized (according to my wiring
book, the narrow socket is "hot", the wide socket is neutral/ground).
Hard to do considering that the sockets had clear instructions as
to which wire went where. I guess illiterate idiot-proofing was
not considered. (Inconsistent, too - a couple of plugs were both
right side up AND correctly wired. Most were either upside down,
incorrectly wired, or both.)
Since some equipment depends on the polarization to ground the case,
improper polarization can result in a "shocking" experience.
|
284.2 | A dumb question? | DONJON::BRAVER | Gary Braver | Tue Feb 10 1987 10:25 | 4 |
| How do you know which side is hot and which is not (what would I
do with my voltometer to tell)?
Gary
|
284.3 | | BEING::WEISS | Trade freedom for security-lose both | Tue Feb 10 1987 11:16 | 6 |
| Unless the electrician was totally incompetent, the black wire should be the
hot one. You could tell with a voltmeter without unscrewing the outlet by
testing each side of the outlet against the outlet for ground. The hot wire
will show a voltage relative to ground.
Paul
|
284.4 | RE: .22,23 | SAVAGE::LOCKRIDGE | Droll Robert, Droll.... | Tue Feb 10 1987 14:31 | 8 |
| re:.23
If you have TWO holed outlets as mentioned in .21, you most likely
DON'T have a ground wire or a grounded outlet box to test against (my
house didn't and in the outlets I haven't rewired, still don't). So a
meter will basically NOT show polarity.
-Bob
|
284.5 | | ULTRA::PRIBORSKY | Tony Priborsky | Tue Feb 10 1987 17:28 | 9 |
| Try touching your common lead on the voltmeter to the center tap where
the screw for the outlet cover goes. That is usually grounded since
two-holed outlets still require the outlet box be grounded (probably
with BX (armored) cable.) Most likely the box itself is metal, and if
the center tap to the screw isn't grounded, then the box probably is.
Note that the proper installation of the three-to-two adaptors require
the adaptor be screwed to the cover plate - the ground (third)
connector goes to that little screw lug.
|
284.6 | Dont count on ground! | GING::GINGER | | Tue Feb 10 1987 21:47 | 10 |
| re .25-dont count on the center screw to be grounded- much work
was not done with BX, just two wire romex.
To tell the hot wire I use a neon test lamp, hold one lead in my
hand, the other into the suspected hot wire. The lamp will glow
feebly on the hot side, not at all on the neutral. NOTE: use only
a NEON test lamp for this, any other tester could pass enough current
to be dangerous.
Ron
|
284.7 | | VIDEO::DCL | David Larrick | Wed Feb 11 1987 12:34 | 7 |
| Two-wire Romex nothin' - I've got knob & tube!
If you don't have a neon test lamp, or otherwise don't care to use your
body as the reference ground, you can always string a wire to a grounded
outlet, water pipe, or other known ground. I suppose this procedure might
be dangerous if you used itty bitty wire, a great big test lamp, and left
it running for an hour - but you won't do that, will you?
|
284.8 | Don't buy HOMEWIRE brand | ISBG::POWELL | Reed Powell - LCG Marketing - 297-4261 | Tue Feb 17 1987 16:16 | 8 |
| Now that I'm about done with my wiring for the addition, here is
some advice: don't buy your wire from Somerville. I'm a big
Somerville fan (except those da*n Wang POS terminals), but the HOMEWIRE
brand they sell is crap. All the wire I bought at Spags (and cheaper
in $) was better. I'm speaking in terms of the durability of the
sheathing, its thickness, and its ability to not rip when being
pulled through joists, etc.
|
284.340 | from a real user | KIM::NICHOLSON | | Fri Mar 20 1987 13:44 | 21 |
284.341 | exiy | AIMHI::WAGNER | | Thu Mar 26 1987 12:59 | 15 |
284.336 | INSULATING WELL PIPE | JOKUR::MCCONNEY | | Thu Aug 27 1987 10:43 | 18 |
284.337 | | WELFAR::PGRANSEWICZ | | Thu Aug 27 1987 13:06 | 7 |
284.338 | same problem here | Q::ROSENBAUM | Rich Rosenbaum;mail->Boehm::Rosenbaum | Thu Aug 27 1987 13:34 | 18 |
284.339 | | ALIEN::WEISS | Trade freedom for security-lose both | Thu Aug 27 1987 14:31 | 42 |
284.340 | | RIKKI::CBUSKY | | Thu Aug 27 1987 16:46 | 17 |
284.341 | Very Well... | JOKUR::MCCONNEY | | Fri Aug 28 1987 10:19 | 10 |
284.342 | blasting and insulation | ALIEN::BEZEREDI | Paul Bezeredi | Mon Aug 31 1987 11:43 | 14 |
284.342 | How much does it cost to run? | NAC::CLOUTIER | | Wed Sep 09 1987 18:44 | 14 |
284.9 | ELECTRIC OUTLETS DONT WORK | CSSE::QUINN | Luchenbach's a state of mind | Thu Sep 10 1987 17:06 | 14 |
| After having several rooms wallpapered recently, the electric
outlets in the bathrooms no longer work.
I checked the switch box, removed the plates and checked for
loose wires, and removed the light fixture to check for anything
funny. I couldn't find anything.
Are there any suggestions before I start the impossible task
of getting an electrician to come out to the house.
Thanks,
John
|
284.10 | | REGAL::ASCHNEIDER | Andy Schneider - DTN 381-2475 | Thu Sep 10 1987 17:58 | 10 |
| I had a similar problem a while back - outlets in a couple of
rooms wouldn't work. I checked them over and over - nothing
was awry. Turned out that another outlet in the same circuit,
but in another room, had a loose connection. This loose connection
caused the rest of its circuit to lose power. Check the other
outlets in the same circuit the bathroom ones are in - you might
have a bum outlet somewhere...
andy
|
284.11 | check to see if you have a GFI outlet in your bathroom | PYONS::HOE | | Thu Sep 10 1987 18:10 | 15 |
| Adding to .1's reply. One of the outlet within the group feeds the
others. Take a lamp and plug it into each of the outlets within
the area [sometimes the outlets are fed from a overhead light or
a switch, ie tapped off that outlet/light/switch]. Most of the problems
come from the push in type outlet/switches that were prevalent about
5-10 years ago. After time, the spring action of the connection
along with crud build up causes the connection to loosen but the
whole group of outlets are fed from one breaker.
My sister's newer house has the bedrooms wired into the bathroom's
ground fault outlet. You might check this out. The outlet usually
is retangular, with a red button marked "reset" and another button
on it marked "test"
cal
|
284.12 | Also II | WIKKET::BRANT | | Thu Sep 10 1987 19:36 | 3 |
| One GFI can handle 9 or 10 outlets after it. Common practice
is to wire all bathroom outlets, outside outlets and garage outlets
to one GFI. Mines in the garage.
|
284.13 | Sounds Too Simple BUT..... | TRACTR::DOWNS | | Fri Sep 11 1987 08:18 | 10 |
| This may be sounding too simple, but I didn't read anything about
checking the breaker/fuse in the main panel. Perhaps some water
from the wallpapering job shorted out the circuit. If you have
breakers, you might want to switch the appropriate breaker on and
off a couple of times. Sometime when a breaker blows it only partially
moves toward the off position and is hard to detect. The only way
to reset it is to switch it all the way off and then back on again.
If this isn't the problem, I'd start tracing down the circuit for
the first faulty outlet.
|
284.14 | More data | TASMAN::EKOKERNAK | | Fri Sep 11 1987 09:43 | 7 |
| My mother recently had a whole circuit go dead. She tried everything
(and asked every relative!) and finally called an electrician.
He found that one plug got fried by a quartz heater, and the rest
of the circuit was caused by a new ceiling light fixture which a
"friend" installed and forgot to connect the ground wire.
Elaine
|
284.343 | Sandblast that Cedar Siding! | CSMSRE::HART | | Fri Sep 11 1987 18:09 | 21 |
284.343 | Closing a well for the winter | STAR::SWIST | Jim Swist ZKO1-1/D42 381-1264 | Tue Sep 15 1987 14:18 | 18 |
284.343 | Some costs to ponder | AIMHI::WAGNER | | Fri Sep 18 1987 14:21 | 14 |
284.336 | ..insulating water pipes.. | GUNSTK::MEDVECKY | | Tue Sep 22 1987 14:02 | 10 |
284.337 | | STUBBI::TRUMPOLT | | Tue Sep 22 1987 14:49 | 12 |
284.15 | 3-way switch unwired without marking - How to ID wires now? | USMRW2::DRIVETTS | | Thu Sep 24 1987 08:16 | 11 |
| I recently bought a timer switch for my outside light which is
controlled by 2 switches. In my haste I ripped out the light switch
I wanted to replace with the timer and did not notice which wire
was "COMMON". On the timer I have a Black, Red, and a Blue wire.
The instructions says to connect the Black wire from the switch
to the Common wire "Usually black". Well I have two black wires
and one Red wire in the switch box. Can anyone tell me how to identify
the "Common" wire.
THANKS,
Dave
|
284.16 | Recriminations and questions | VIDEO::DCL | David Larrick | Thu Sep 24 1987 10:51 | 20 |
| First, the question would be easier to answer if you had ripped out the old
switch with less enthusiasm and more attention. Always proceed systematically
when you intend to re-use part of the wiring. I suspect you realize this now;
maybe someone else will benefit from this admonition.
Enough recriminations. I need some more information, or maybe I'm just nosy:
- What type of wiring do you have (Romex, conduit, knob-and-tube; grounded?),
and how old is it?
- Is the timer switch definitely intended for use in cooperation with
another switch? (often called "3-way")
- Does the switch box also contain two white wires, connected to each other
with a wire nut but not connected to anything else? (If the answer is
"yes", I can answer your question easily).
- The instructions use the word "common" in a way that seems to be
non-standard. If it's not too long, could you type in the whole text of
the instructions? Maybe I can understand it better in context.
|
284.17 | 2 white wires tied in the box | USMRW2::DRIVETTS | | Thu Sep 24 1987 11:19 | 3 |
| The switch box has 2 white wires tied together. After I read the
directions I noticed on the back of the switch the word "Common"
was next to where I pulled out one of the black wires.
|
284.18 | 3-way wiring | CLOSUS::HOE | | Thu Sep 24 1987 13:13 | 19 |
| Look closely at the wires; you should have two cable [for the lack
of a better term]. One should have one black wire, one white wire
and [depending on the age of the wiring] a copper ground wire; the
other cable should have a black, white and red wires with the copper
ground. The whites are the NEUTRAL wires and are connected. The
grounds are connected. The COMMON wire is the black from the cable
with only the black/white wires; the other cable's red/black are
the "runners" to the load [light in this case].
/o------------------red----------------o\
hot[black]--------/ \--[B]light
o-----------------black---------------o
neutral[white]------X-----------------white---------------X-----[W]-
3-way switch 3-way switch
/cal
|
284.19 | | VIDEO::DCL | David Larrick | Thu Sep 24 1987 16:34 | 11 |
| > you should have two cable [for the lack of a better term].
"Cable" is exactly the right term, unless the house happens to be wired in
conduit.
The rest of Cal's description is good, although this use of the term "common"
makes me cringe; I learned that "hot" is the right term here, and that
"common" is a synonym for "neutral" (with some hairsplitting differences).
Anyway, this should be enough information for you to finish the job. Let
us know how it comes out.
|
284.20 | THANKS | USMRW2::DRIVETTS | | Fri Sep 25 1987 11:01 | 15 |
| The reason I needed to know was, I had a power fail the other day.
When the power came back on the light came on witch was normal since
I had the switch installed and working for about 3 weeks. When
I went to shut off the light the light would not shut off and the
switch smoked. I assume I had the black wires crossed. I installed
a toggle switch and wanted to make sure it was wired correctly.
Thanks for the info. Even my Time Life book on wiring talk about
the Common wire and how you should mark it with tape before removing
an old switch, but the only way they mention how to identify the
common swith is to look at the back of the switch and see which
wire is in the commmon terminal.
|
284.21 | Use photo sensors instead. | CLOSUS::HOE | | Fri Sep 25 1987 16:38 | 13 |
| I installed a daylight sensor in my porch light fixture. The fixture
now turns off if we forget to turn it off. I also installed three
lights out side the garage; one on either side of the garage door
and one at the side door. The garage lights have a light sensor
on it to turn it on and off with the daylight.
I added a 1 amp 200 PIV diode in series sos the bulb works at 70%
power [a 100Watt bulb works at ~70Watts power so the bulb will last
a lifetime].
If you feel so inclined, send me mail.
/cal
|
284.338 | hot water from a cold tap | ZEN::WINSTON | Jeff Winston (Hudson, MA) | Mon Oct 19 1987 22:31 | 19 |
284.28 | Electrical Problem...Bad Ground | HPSMEG::LUKOWSKI | I lost my A$$ in the '87 CRASH! | Mon Oct 26 1987 14:45 | 29 |
| Test your problem solving skills!
I have an electrical problem that I need/want to solve ASAP so
I'm looking for any ideas you folks may have regarding this. I'm
expecting the electrical inspector to show up this week and I REALLY
want to get this fixed before then, if possible.
The problem:
The ground wire in on of my circuits has current. I deduced this
from the following:
Voltage between Hot and Neutral 122 volts (No problem)
Voltage between Hot and Ground 50-60 volts* (should be 122)
Voltage between Neutral and Ground 50-60 volts* (should be 0)
Voltage between Ground and Water pipe 50-60 volts* (should be 0)
Voltage between Neutral and Water pipe 0 volts (continuity...no problem)
* I say 50-60 volts because I can't remember if one had 50
and the other had 60 or they both had 50.
My thoughts on this (ok, so I'm guessing) is that the ground is
broken and is inducing current from the Hot. Is this too far fetched?
This is the problem with all outlets on the circuit except for the
first one I believe. I will attempt to see if something is breaking
the connection between the first outlet and the next (wherever
that is).
-Jim
|
284.29 | I'll bet a buck... | CHART::CBUSKY | | Mon Oct 26 1987 15:00 | 10 |
| Yep, I've got a dollar here that says its a broken ground someplace.
The ground wire in the new part of the circuit is not really connected
to anything but will still show a current flow between it and the black
or white wires. I'm not sure if the current flow from the broken ground
into the air around it or induced back into the black or white wire
that is next to it.
Finding and fixing the broken ground should resolve the problem.
Charly
|
284.30 | trace the ground line once more | HYEND::MNIKITAS | | Mon Oct 26 1987 16:00 | 7 |
| I agree with the break in the ground line. Several months ago we
experienced the same problem with strange readings on the meter.
At one point the lights would dim and brighten as more of the
appliences and well pump would kick in.
Trace the ground line/wires once more and chances are you will find
a break.
|
284.31 | CURRENT in VOLTS? | XANADU::SCHNEIDER | Dennis Schneider | Tue Oct 27 1987 08:43 | 16 |
| It's likely the ground is bad - but let's get some terminology right:
CURRENT = a flow of energy; measured in AMPS
VOLTAGE = a POTENTIAL; measured in VOLTS.
You certainly have AT LEAST an almost 'floating' (not connected to ground)
ground if you can see a Voltage on a ground wire - you might just have
a poor connection to ground. That's what the VOLTAGE you see would tell
you.
Is there a LOAD on the circuit you are testing? If so, is there CURRENT
in the ground leg? If so, then you ALSO have the load neutral hooked to
ground.
Dennis
|
284.32 | I believe I found it! | HPSMEG::LUKOWSKI | I lost my A$$ in the '87 CRASH! | Tue Oct 27 1987 10:51 | 28 |
| Re: All
Thanks for the quick inputs. I believe I found the problem. I
managed to trace the problem between the good and bad connections
and found that some incompetant spliced wires and did NOT use a
junction box. I only saw the Hot and Neutral wires spliced.
If the ground wires were spliced, a wire nut was NOT used. I decided
not to tangle with the mess yet because I need to buy some junction
boxes to fix this. Also, the whole mess was wrapped up with electrical
tape. I will also need to replace a 2'-3' section where this person
pulled the wire from the staple to give him room (the staple didn't
pull out, it broke thereby fraying the wire). Needless to say,
I did not get a warm and fuzzy feeling when I saw this. I will
have to go back and see what else may be wrong. There is new(er)
wire running to this splice so I will have to find where it ends
to see if he did this again. This really is a pain because this
is all in the attic so I have to remove the 9" fiberglass batts
that I installed (just so I know where to step/crawl as well as rip
up the insulation that was there originally. My next electrical
project will be to fix what the ELECTRICIAN did who changed the
service panel approx. 10 years ago...he wired the WHITE as HOT.
Finding these problems all started by changing my outlets to grounded
outlets.
-Jim
Re: .3
I was saying current but I did mean voltage.
|
284.33 | An update | HPSMEG::LUKOWSKI | I lost my A$$ in the '87 CRASH! | Thu Oct 29 1987 09:26 | 16 |
| Re: .3
I didn't understand at first what you meant by having a load
to induce voltage but someone here explained it to me. I made sure
everything was unplugged/turned off on that circuit and checked
it again. Result: Still the same voltages. The electrical inspector
was there yesterday and I explained what I found. He said
that he expects me to find another problem (like a short) when I fix
what I found so far. I was afraid he'd say that but others here
agree. I also noticed something else last night when I was checking
the light fixtures. When the switch is turned off, I read 30 volts
at the socket. Arrgghhh :^( Anyway, I now have a permit to fix/replace
this wiring and now know what I'll be doing this weekend. BTW, I
also found two more of those splices in the wiring.
-Jim
|
284.34 | Suspicions | XANADU::SCHNEIDER | Dennis Schneider | Thu Oct 29 1987 10:17 | 16 |
| re:.-1
The underlying reason why one would suspect that a short exists is: for
there to be an INDUCED voltage (a voltage that is present without an electrical
connection to a source) is for there to be a flow of current (AMPERAGE).
Now, you could have a cable run containing the suspicious ground line running
close enough to another power line which has a load/current to create the
induction.
The way an electrician would figure out what's cooking would be to use a
device called a "megger" on the suspicious circuit with power removed. A
"megger" is an Ohmmeter designed to measure VERY LARGE resistances (the
resistance of the insulation in the wiring).
Dennis
|
284.35 | Device to check out these things | HPSVAX::POWELL | Reed Powell (HPS/LCG Marketing | Thu Oct 29 1987 13:24 | 0 |
284.36 | Sears has it for $3.95 | VAXWRK::INGRAM | Larry Ingram | Thu Oct 29 1987 14:29 | 0 |
284.22 | Parallel or Series? | WYNTON::SYSTEM | Brian McWilliams | Fri Oct 30 1987 00:08 | 44 |
| May I tack on another wiring question here?
Right now I have two switches in my bathroom: one for an overhead
light, and another for an exhaust fan. The problem is that the two
are wired together such that turning off the light switch also turns
off the fan.
I'd like to re-wire them so that the fan can be operated even when the light
switch is off. Pretty basic wiring, I guess, but I'm green, so I need help.
o How do I re-connect the wires so the fan switch functions independently
of the light switch?
o Luxury option: How would the wiring be different if I put the fan and light
switches together on a new fixture (in the same box)? Could I use the old
box to add a new outlet? How would I wire the thing?
Here's the current (sic) set up:
FAN SWITCH:
(uses nice new romex I think)
/black
_____/
| |-------\white (nutted)
| 0 |-------/
|_____|\
| | \black
| |
\ /
copper (nutted)
LIGHT SWITCH:
(crusty old cloth-wrapped wires)
/black
_____/
| |-------\white (nutted)
| 0 |-------/
|_____|\
\black
|
284.23 | The answer (I think) and more questions! | CADDLE::MCCARTHY | CADSE software engineering | Fri Oct 30 1987 06:18 | 42 |
| Here is what I think the problem is:
The switch for the light has the power coming into it and the switch
leg going out (the cable that runs between the switch and the light).
When the fan was put in, by whom ever, they came from your bathroom
light (is this a one piece unit?) and went to the box containing
the fan switch. Since your your light only has power when the switch
is on, that is why the fan goes off.
Diagram:
FAN SWITCH
-- Black ---------------------------------- FAN -
| |
/----- White ----------------------------------
\----- White -------------
| |
\-------- Black -----\ |
| \/-----\
| LIGHT |
| |
\-----/\ |
LIGHT SWITCH | |
/------- Black ------------/ |
| |
/---- White -------------------/
\---- White -----------------------------\
| POWER
\------- Black -----------------------------/
The fix depends on how easy it is to get to the wires that run into
the light switch.
Where are the switchs located? Outside the bathroom? inside? Is
this on the second floor? What is above the bathroom? It the
FAN/LIGHT one unit?
things to think about........
mac
|
284.24 | What next? | DECWET::MCWILLIAMS | Brian @ DECwest, 206.865.8837 | Fri Oct 30 1987 13:05 | 15 |
| RE. < Note 1564.8 by CADDLE::MCCARTHY "CADSE software engineering" >
Your diagram looks right. To answer your questions:
The switches are located on the inside bathroom wall. The fan switch is
directly above the light switch. Above the bathroom is the attic. The
light fixture is on the wall adjacent to the switches. The fan is separate
on the wall parallel to the switches.
Does that help you suggest how to re-wire the set-up?
-Brian
|
284.25 | | VIDEO::DCL | David Larrick | Fri Oct 30 1987 14:54 | 44 |
| The fact that the attic is above may well save the day, or at least save
the wall.
You basically want to rip out all of the existing wiring and replace it
with something more intelligent. However, even with the convenient access
through the attic above, you may have some challenging "fishing" ahead of
you. So as you pull out each old cable, use it to pull one or more new
cables into its place.
Here's the new wiring diagram:
/
+--------------/ ----------------- hot, switched
| fan-switch fan
| +----------------------------- common
| |
| |
| | /
hot --------------+--(-----------/ ----------------- hot, switched
supply | light-switch light
common ------------------+----------------------------- common
One gotcha is that neither switch box might be big enough to hold both the
switch and the two Y-connections comfortably. The National Electrical Code
has specific provisions for how big a box needs to be to accomodate such
things as switches and junctions. If you'll measure the dimensions of your
switch boxes and post the results here, perhaps some kind NOTEr will
determine whether you'll have a problem - the algorithm isn't difficult,
but it's confusing if you're not familiar with it.
Please don't make the Y-connections by connecting multiple wires to the
same screw on a switch. Doing so is unsafe and not to Code.
I'm concerned about the lack of a ground in the supply, as your original
note seems to indicate, especially in a bathroom. Theoretically, you
should replace the supply with a properly grounded supply. If you do
indeed install an outlet as well, you'll have to get a grounded supply from
someplace, since bathroom outlets now require GFI.
Plan, plan, plan before you start work, and if there's an aspect you don't
understand thoroughly, plan some more. Some key aspects of the planning
for this project will include how long you can afford to leave the bathroom
without light and fan, and where you will get light to do the job by.
Please ask more questions here; no question is too dumb.
|
284.37 | rip it all out! | TALLIS::SAMARAS | Advanced Vax Engineering LTN | Fri Oct 30 1987 17:26 | 12 |
| I had a similar problem to this when trying to "undo" some jerks wiring
attempts. I had the same funnie voltage measurements; you know, like 50V
on the neutral wire to ground. It had me running in circles, and keeping
me awake nights worrying about it. The problem was indeed a short from
HOT to the GROUND wire half way up the cable. Real hard to find, but it
was there! It really scared the he%& out of me, 'cause it could have
burned the house down. My cable was the old BX junk with a metal jacket.
The jacket is the ground (now illegal), I guess there was enough
resistance to keep the breaker from blowing. Pretty scary; I rewired the
whole circuit.
...bill
|
284.26 | A bigger box? | DECWET::MCWILLIAMS | Brian @ DECwest, 206.865.8837 | Sat Oct 31 1987 16:55 | 39 |
| RE. < Note 1564.10 by VIDEO::DCL "David Larrick" >
>If you'll measure the dimensions of your
>switch boxes and post the results here, perhaps some kind NOTEr will
>determine whether you'll have a problem
Both the light switch box and fan switch box above it are 2"x3". As I figure
it, I'm going to have one cable coming into the box from the bottom with my
power feed. I'll have two y junctions off it (to fan switch and light switch)
and it will continue on to the outlet I want to add on the adjacent wall.
How big will the box need to be to accomodate all that?
>Please don't make the Y-connections by connecting multiple wires to the
>same screw on a switch. Doing so is unsafe and not to Code.
Okay if I use wire nuts? Or should I have a special junction box?
>If you do indeed install an outlet as well, you'll have to get a grounded
>supply from someplace, since bathroom outlets now require GFI.
Does this mean tracing the power feed back to the circuit box and replacing
it with 3-way cable? (There's no other way to install a GFCI using existing
2-way wire?)
- Also, how do I achieve the "pass through" advantage of the GFCI so that my
exhaust fan is also protected?
- What's the best way to splice wire in the attic? (The existing set-up
uses wires taped together under the insultation!!)
- What's the best way to get wire from the light switch box to the fan switch
box on the wall above it?
Thanks a lot for your help!!!
brian
|
284.27 | I'm up | CADSE::MCCARTHY | CADSE software engineering | Sat Oct 31 1987 19:55 | 35 |
| My turn again
Don't know the actual limit of wires (I should but I don't). (Dave
you can answer that!)
How old is the house? Is the "old" wire metal sheathed?? If so, this
is your ground.
When you say the existing set-up uses wires taped together under
the insulation, do you mean that the wire put in for the fan was
done this way??
A GFI outlet has four connections, (some are wire leads others are
screw terminals depending on the brand) one pair is the LINE side
the other is the LOAD side, to get the "pass through" advantage,
all you have to do is to feed the fan switch off of the LOAD side
of the GFI. This is done alot to have two bathrooms on the same
GFI without needing more GFI's (those suckers are not cheap!).
The ONLY way to splice wires is within an approved electrical
"container". For new construction junction boxes are not usually
not needed. For "old" work, (adding wiring to an existing house)
if splices are needed we (my ex-boss and my self) usually used a
4" square metal box with a blank cover and screwed it to a convenient
location (accessable).
mac
This is usually done within a
The wires you are describing
make me think that you have KNOB-IN-TUBE wiring which does not carry
a ground. The HOT and NEUTRAL are run throughout the house and
when a
|
284.38 | Problem solved! | HPSMEG::LUKOWSKI | I lost my A$$ in the '87 CRASH! | Mon Nov 02 1987 10:52 | 14 |
| Yesterday, I replaced all the wiring containing those splices
and the problem was solved. What I found is that the wire that was
spliced in did NOT have a ground wire. Since I went this far, I
decided to find the first receptacle on the circuit and put the
GFCI there. Now the whole circuit is GFCI protected. On a side
note, after I found the first outlet I decided to check continuity
on the rest of the circuit to verify that everything was A-OK. What
I found was 26k-ohms resistance in the line. To make a long story
short, the resistance was coming from the GFCI that was in the
bathroom. The resistance is there whether or not the GFCI has been
tripped. That GFCI is no longer there since I moved it to the
beginning of the circuit.
-Jim
|
284.39 | too much juice to chill the juice | MIZZEN::DEMERS | Do the workstation thing | Tue Nov 17 1987 08:25 | 13 |
| For the past few years, I've noticed dimming in my lights. I verified
all connections at the fuse box and checked voltages, ground, etc.
Everything looked fine. Now, a new refrigerator has made the dimming
more evident. With no other noticeable loads (I'm in bed at night
reading), the frig kicks in and the bedroom light dims. Their on
different circuits. With 100A service, I don't expect the the
refrigerator (or even the TV, at times) to make that kind of impact
on the service.
Should I revisit the problem? House built in 1962, wiring looks
decent, I checked all plugs for "push in" connections.
Chris
|
284.40 | possible causes | REGENT::GETTYS | Bob Gettys N1BRM 223-6897 | Tue Nov 17 1987 12:35 | 28 |
| First - a question - Is your refrigerator on a separate
circuit from your bedroom??
I will presume that it is, since it would be abnormal for
the two to share a circuit. You then have isolated the problem
back to the connections in one of four places.
1. In the fuse/breaker box - tighten everything,
especially the ones common to the two circuits (don't forget the
ones from the meter - CAUTION they are ALWAYS HOT!).
2. In the Meter box (there are connections here that
need to be tightened periodicaly) CAUTION - ALWAYS HOT again!
(Theoretically you need to call the power company here as
removing/installing the meter from/to the box is their
responsibility.)
3. The connections that tie your meter lead in to the
edison drop (call your power company here).
4. A bad connection where your drop connects to the
distribution wires on the street or the distribution wires to
the transformer. Again, call your power company.
That about does it.
/s/ Bob
|
284.41 | some general hints | REGENT::GETTYS | Bob Gettys N1BRM 223-6897 | Tue Nov 17 1987 12:51 | 39 |
| Some hints for localizing a problem of this sort.
If the turn on of an appliance causes light(s) to dim,
then you need to determine something.
Is the light(s) on the same circuit? (test - pull the
fuse or open the breaker for the appliance, did the light go
out? Yes - it is on the same circuit. No - it is on a different
circuit.)
If it was on the same circuit - check the connections on
that circuit for "high" resistance spots (push in wiring on
outlets, loose screws with wires under them on outlets or
switches, improperly done splices, etc.) and fix them as
appropriate. If after doing this the light(s) still dim
significantly, then either you missed a connection, or the
circuit is too small for the load.
If it wasn't on the same circuit, then the problem is
more localized as only the parts in common to BOTH circuits can
cause one circuit to effect another. That usually limits you to
the situation(s) that I described in the previous note.
Even if all the connections are properly made and the
circuits are properly sized, a big enough starting load can
cause some light dimming. The smaller the service to the house,
the more likely you are to see it. It should never be such that
most people will notice it, but some people do tend to notice
such things more readily than others (I know I do).
One other variation. If the turn on of an appliance
causes a light(s) to get BRIGHTER, then you have a neutral
problem in the common portions of the two circuits. (I won't go
into the theory, but the voltage drop can become a voltage rise
on the other side of a 220 line resulting in the rise of the 110
line from that side of the 220.
/s/ Bob
|
284.42 | Is it on a dimmer ?? | FREDW::MATTHES | | Tue Nov 17 1987 12:57 | 4 |
|
Is the light that dims on a dimmer ?? These things are extremely
sensitive to line voltage variations.
|
284.43 | Also check for fusistors | TALLIS::KOCH | Kevin Koch LTN1-2/B17 DTN226-6274 | Tue Nov 17 1987 13:36 | 12 |
| > For the past few years, I've noticed dimming in my lights. I verified
> all connections at the fuse box and checked voltages, ground, etc.
> Everything looked fine. Now, a new refrigerator has made the dimming
> more evident. With no other noticeable loads (I'm in bed at night
> reading), the frig kicks in and the bedroom light dims. Their on
> different circuits. With 100A service, I don't expect the the
> refrigerator (or even the TV, at times) to make that kind of impact
> on the service.
One possibility not mentioned is a 'fusistor.' Old cartridge fuses
that have developed some resistance. Try changing them. (Assuming you
have catridge fuses.)
|
284.44 | Could be corroded crud | TALLIS::SAMARAS | Advanced Vax Engineering LTN | Tue Nov 17 1987 14:15 | 9 |
| I had a similar problem. Any appliance coming on would cause lights to dim. It
got progressivly (sp?) worse. Finally we called the electric company. They
found that the crimped connections at the pole were corroded. They replaced
them, and the dimming problem went away. This has happened twice over the past
10 years. Probably 'cause the house is close to the ocean.
good luck,
...bill
|
284.45 | may not be the box | ZEN::WINSTON | Jeff Winston (Hudson, MA) | Tue Nov 17 1987 22:13 | 5 |
| I have the same problem as .11 (frig cutting in dims house lights,
house built in 1962) I am less likely to suspect my box because I just
had a modern box and 100A service put in. Frig is on its own circuit
- in fact it on the different 'leg' than most of the lights, etc.
i like the idea of checking with the elec. company...any other ideas?
|
284.46 | i'll keep looking | MIZZEN::DEMERS | Do the workstation thing | Wed Nov 18 1987 08:16 | 17 |
| Phew! Where do I start?
I've replaced the fuses and the cartridges. The wire running from
the top of the house to the fuse box has been replaced. The frig
circuit is shared by one other unused plug. I've tightened all
the connections in the fuse box (I did find a few slightly loose
grounds, no change though).
I'm on Hudson Power. I think I'll call and see if I can get a free
'consult' on this. Maybe it's at the pole or in the wire coming
from the pole to the house. I'm also going to try to 'catch' the
voltage drop (if that's the problem!) when the frig kicks in.
thanks for the help, stay tuned...
Chris
|
284.48 | advice on elect.switch | SALEM::MEDVECKY | | Thu Nov 19 1987 12:54 | 11 |
| Need some electrical advice.....I have a spotlight outside the house
which has a switch in the garage....now thats OK if there were more
than one switch but there isnt......so my question is this: can
I run some wire from the switch in the garage to a switch in the
house and if so, will they both work? Or, what if I went to the
attic, spliced the wire and tried to put it on a switch in an
upstairs bedroom? Again, would both work?
Thanks
Rick
|
284.50 | Do you *NEED* the switch in the garage? | VAXWRK::INGRAM | Larry Ingram | Thu Nov 19 1987 16:54 | 7 |
| If you can easily get to the light's wiring from the house, you
might be better off bypassing the switch in the garage entirely
and putting a switch by the back door or whatever. This would
alleviate the need to run another cable to the garage for a 3-way
switch.
Larry
|
284.51 | Have you considered a BSR X10 system? | CASSAN::JOHNSON | | Fri Nov 20 1987 08:10 | 17 |
| For the amount of effort involved and the what you get for it have you
considered the remote control X10 system from BSR? All you would have
to do is spend about $25 and get one remote switch module and one
control console. Now you can turn this sucker on from the house and
if you want you can add more switches and control consoles to control
as much as you want (up to 16 per console) and where you want.
I had a similar problem in that I needed to control outside floods from
the upstairs bedrooms. Now with the X10 system I can turn the front and
side floods on from the bed - or I can turn them on with local switches -
or I can turn them on from the console in the kitchen ... etc.
Once you get to use this system the convenience is hard to live without.
Also, you can get a timer/console which can turn stuff on a predetermined
times.
-peter
|
284.52 | | DICKNS::WELLCOME | Steve Wellcome (Maynard) | Fri Nov 20 1987 09:56 | 3 |
| Re: .3
Sounds good; more details, please, like where are these things sold.
Is this a wireless system, or a low voltage relay system?
|
284.53 | see note 137 | BINKLY::WINSTON | Jeff Winston (Hudson, MA) | Fri Nov 20 1987 19:49 | 7 |
| > Re: .3
> Sounds good; more details, please, like where are these things sold.
> Is this a wireless system, or a low voltage relay system?
see note 137
|
284.54 | Get a photo cell to turn the light on/off at night/day | CLOSUS::HOE | | Sun Nov 22 1987 21:13 | 15 |
| I had the same problem. I added a photo cell on the light and left
the light on. I also wired a diode in series with the light so the
bulb burns at 70% wattage. A 100 watt bulb burns like a 60 watter.
Now, I leave the switch on and the lights stays on all night; turns
off when it's daylight.
The photo cell costs about $10-15. If you want to get real fancy,
there's a infrared switch by RCA that you can add for about $50.
It turns on when it detects motion and it can turn off 15 minutes
later after the motion ceases. Check out the Sears catalog for a
description.
Good luck. If you need to talk to me, I can be reached at DTN 522-2525.
/cal
|
284.344 | heat pump and dug well | REGENT::HUNTINGTON | | Mon Apr 25 1988 19:30 | 16 |
284.345 | Some feedback | AIMHI::WAGNER | | Tue Apr 26 1988 13:33 | 48 |
284.336 | Condensation on basement cold water pipes | VICKI::PTHOMPSON | | Mon May 23 1988 10:04 | 5 |
284.337 | | SMURF::WALLACE | Life's a beach, then you dive! | Mon May 23 1988 10:31 | 4 |
284.338 | | PDVAX::P_DAVIS | Peter Davis | Mon May 23 1988 17:58 | 3 |
284.339 | | MTWAIN::WELLCOME | Steve Wellcome (Maynard) | Tue May 24 1988 09:37 | 6 |
284.340 | | PDVAX::P_DAVIS | Peter Davis | Tue May 24 1988 12:17 | 4 |
284.341 | They're not "solid" copper | SALEM::M_TAYLOR | I call it sin... | Tue May 24 1988 14:12 | 6 |
284.342 | Missed .5 by 10 nano-seconds | SALEM::M_TAYLOR | I call it sin... | Tue May 24 1988 14:16 | 8 |
284.343 | Dissension within the ranks? | NOTIME::SACKS | Gerald Sacks ZKO2-3/N30 DTN:381-2085 | Tue May 24 1988 16:55 | 6 |
284.344 | If I had it to do over | VIDEO::HARPER | | Wed Jul 06 1988 14:01 | 9 |
284.345 | | MAMIE::DCOX | Try? Try not! Do, or do not. | Thu Jul 07 1988 12:40 | 15 |
284.164 | identify the circuit, then ck | NSSG::FEINSMITH | | Mon Jul 18 1988 12:12 | 13 |
| Power feeds go from the breaker panel (or fuses) to the first box,
then the second, third and so on. Unless the outlet you are using
is the only one on that breaker, there will probably be many
connections between it and the breaker panel. You'll need to identify
all the connections in that circuit (kill the breaker and see what
outlets are dead, perhaps even some ceiling lights too). Then check
each connection to see where a high resistance or loose connection
exists. Its a pain but may be the only way to find your problem.
A loose connection is not only a nuisance, it can be a fire hazard
(and from your description, your wiring sounds fairly old)!!
Eric
|
284.165 | | MTWAIN::WELLCOME | Steve Wellcome (Maynard) | Mon Jul 18 1988 14:52 | 6 |
| Check for outlets along the circuit that are connected by the
push-in connectors on the back of the outlet; if you find any,
take the wires out and use the screw terminals on the outlet
instead. The push-in connectors tend to get real flakey after
a few years.
|
284.166 | | AMUSE::QUIMBY | | Tue Jul 19 1988 11:05 | 7 |
| Re: .1, .2
As far as I can tell, there are no outlets or junctions between
the circuit box and the outlet. Unless one is sealed inside the
basement ceiling, which if it isn't illegal ought to be....
dq
|
284.167 | There still may be some jctns. | NSSG::FEINSMITH | | Tue Jul 19 1988 11:38 | 14 |
| Re: .3, if its a direct circuit (it would seem strange, but possible),
then you still have a neutral connection in the box on the neutral
bus bar. Wiring may not follow a logical path, so it may take some
hunting. The kill-the-breaker-and-ck-outlets would still be a good
idea to map the connections. How many wires does the outlet in the
kitchen have in the box? Its a lot of work, but possibly your only
option.
PS-If you ck the neutral bus in the breaker panel, BE CAREFUL. The
center bus bar connections between the breakers are exposed and
HOT. Unless you are an expert, kill the main breaker before going
into the panel!!!!
Eric
|
284.168 | not so strange to me.... | LITLTN::CAHILL | Jim Cahill | Tue Jul 19 1988 11:55 | 14 |
| re .4:
� if its a direct circuit (it would seem strange, but possible),
Why? It's a kitchen circuit, and for a high-draw appliance. Both
of these lead me to believe that it's a dedicated circuit installed
according to NEC suggestions.
BTW, even with the main breaker turned off, there's still live power
in the box. Know what you're doing, regardless of whether you're
an "expert" (whatever that is) or not, or you could end up being dead
wrong.
Jim
|
284.169 | sounds like a bad wire to me. | SVCRUS::CRANE | | Wed Jul 20 1988 09:39 | 9 |
|
Sounds like the wire Going to the outlet from the box is bad.
I've run into it before. Just liave the old wire in the wall and
run a new one whatever way is easiest but still within code.
If you try this just cut the old wire off at each end where it
goes into the walls (or Floors).
John C.
|
284.170 | Don't play with it, replace it | KATRA::RICE | | Thu Jul 21 1988 01:13 | 19 |
| The wiring you described is 1930's-40's vintage. Other than wiring
done in the past 15 or so years, you can't beat it. The NEC didn't
have the codes mentioned a couple replys ago back in those days.
Junction boxes are a no-no but that never seems to stop folks from
doing it during remodeling. I'd expect the kitchen has been
remodeled sometime (if not multiple times) in the past since the
original wiring was done. The code does say that junction boxes
must be in the open and not hidden. Look in areas that would've
been disturbed during remodeling over the years. You may find a
nice little rats nest the carpenter (or whoever) made of the wires.
Since you do have a good ground this may not be the case, it would
be obvious if you didn't. The ground comes from the BX case, at
least the wires aren't spliced somewhere in the walls...
Replacing the wiring is your best bet. These days you should have
at least two 20A circuits on your kitchen counters.
Good luck
|
284.171 | | MAMIE::THOMS | | Thu Jul 21 1988 09:03 | 6 |
| RE:7 Old BX wiring is very dangerous. The rubber/ cloth insulation
rots and breaks down causing a short to the metal casing. This casing,
unlike new BX wire which has a bonding conductor, has resistance. The
casing will heat up like a heating element.
This wiring is a cause of many home fires. I'd rather have knob
and tube in my home!
|
284.172 | circuits do vary | NSSG::FEINSMITH | | Thu Jul 21 1988 12:31 | 13 |
| RE: .5, granted, hard wire appliances are usually on their own circuit,
as would be very high draw circuits (i.e. electric stove), but
generally, the regular wall outlets have more than one drop, especially
considering the age of the wiring mentioned. A kill-the-breaker
and ck outlets and lights is still the best way to trace that circuit.
Also, short of pulling the meter, killing the main breaker is the
best way to work within the panel. With it off, the only place where
voltage should still be present is the input to the main (this assumes
that its a breaker panel, and not fuses). But you are correct in
being cautious in working around a panel. If you don't know what
you are doing, its far better to stay out and call an electrician!
Eric
|
284.173 | Remote Main | LDP::BURKHART | Klaatu, barabus niktu | Thu Jul 21 1988 14:25 | 16 |
|
Just a quick aside; When doing some rewire work on my fathers
old farm house it had one neat addition to jumble of wiring I found
to be very handy. The house had 3 additions onto it in it's lifetime
and a real mess as far as wiring goes, when the last addition was
added they had to move the service entrance and rather then moving
the breaker pannel the just ran the incoming line from the meter
to a sub pannel with only a main breaker in it then from there to
the breaker box. That way you just kill the first breaker and the
breaker box was dead. This came in handy when I opened the breaker
box and found a mouse that had fried himself behind the main breaker
in the box.
...Dave
|
284.174 | the code made me do it | CADSE::MCCARTHY | I fixed it yesterday | Thu Jul 21 1988 14:59 | 6 |
| RE: .-1
I believe there is a code ruling on having the main panel a certain
distance away from the meter socket. For some reason 6 feet pops
into my head. Anything over that and there has to be a disconnect
placed between the two (within 6' of the meter)
|
284.175 | Must be a hidden bad connection | FANTUM::BERRY | On my way to Heaven, guaranteed | Thu Jul 21 1988 17:02 | 10 |
| RE .0
As others have suggested, the symptoms do point to a bad connection
between the panel and the outlet. If you're absolutely sure that
no other light or outlet anywhere in the house is dead when that
circuit is shut off, there is two possibilities. One is the afore-
mentioned hidden box (which is against the code) and another is
the use of an outlet or light fixture box to pass thru the wire
destined for your microwave. (You probably don't have light fixture
boxes though.) I vote for disconnecting the offending circuit at
the panel and running a new 12 guage wire. Happy fishing !
|
284.55 | Human factors of switched outlets | VIDEO::DCL | David Larrick | Mon Aug 22 1988 13:29 | 37 |
| Advice, please, on a different kind of electrical switch: one that controls
switched outlets.
As part of constructing a new master bedroom, I installed about a million
duplex outlets, each of which follows a simple rule: the upper outlet is
controlled by a switch at the door, and the lower outlet is always hot
(unswitched). This arrangement gives us tremendous flexibility in arranging
the room: anyplace we want to put a lamp that we want to be switched, there's
a switched outlet nearby; similarly for things that we want to be unswitched.
Since the principal users of the master bedroom outlets - my wife and myself -
devised the above simple rule, we've had no difficulty remembering it, and we
haven't found this nonstandard installation to be confusing. The electrical
inspector was confused at first - the switch happened to be off when he
started testing - but he didn't have any official objection to the technique.
The time has come to design the wiring for the bedroom we're gutting and
reconstructing for my teenage daughter. Like us, she's interested in having
the flexibility to move furniture around without rewiring the place or
running extension cords everywhere. But she objects to our "top = switched,
bottom = unswitched" scheme - her argument is that she has many more
unswitched devices than switched ones, and will have multiple unswitched
devices at any one location. Quad or hex outlets are out, because they
would make the room look more like a chemistry lab than a bedroom - except,
perhaps, at one or two designated locations, which flies in the face of
flexible furniture placement.
Her counter-proposal is to have the top outlet of _every_other_ duplex
outlet be switched, so one-out-of-four is switched, and the other three are
hot. Although people can get used to anything, this scheme strikes me as
terribly confusing. I'm quite aware that this argument could easily be
applied to my own approach!
I'm at least as interested in the "human factors in design" considerations
of this situation as in the electrical ones. I'd appreciate your comments
on switched outlets you've used and/or designed; what schemes have worked
well; what ones have turned out to be confusing or inconvenient.
|
284.56 | More switches? | AKOV68::CRAMER | | Mon Aug 22 1988 14:09 | 21 |
| Dave,
Actually, having more than one outlet switched sounds confusing
to me, for this reason:
Suppose you have 8 duplex outlets in a room (2/wall) now with
your scheme you have 8 outlets that are on the same switch. What
are the odds that you want everything that is plugged into these
outlets on or off at the same time? It seems that you would rather
quickly start using the local switch and leaving the outlets "hot"
all the time. The alternative would seem to be that you have
so many outlets that you don't need to put more than 1 or 2 whatevers
on the swiched circuit which leads to your chem. lab scenario.
Another alternative would be two switches, one switch controlling
the top of every other duplex outlet, and the other switch controlling
the top of the remaining duplexs.
Of the two alternatives you offer I find your daughter's more
realistic. You could easily put a label on the outlets that are
switched.
Alan
|
284.57 | Bypass the switch wire if you don't want it. | VIDEO::FINGERHUT | | Mon Aug 22 1988 14:48 | 13 |
| > -< Human factors of switched outlets >-
Once you run a switch wire and a hot wire to all of your outlets you
can randomly make any of them always hot or switched by jumping
wires. That's what I did (I got the idea from this file).
All rooms I wire in the future will be like that. It sounds like
you wired it like that, but you need to bypass the switch on the
upper oulets that you don't want to have switched at any given time.
Usually only 1 or 2 of the outlets in the room will be on the switch
at any time (probably).
|
284.58 | | VIDEO::DCL | David Larrick | Mon Aug 22 1988 15:08 | 14 |
| re .9: I love it. Re-wiring the outlets to select switched or unswitched
operation is easy and quick (if you know what you're doing, of course), and
considerably less traumatic than tearing holes in walls to run cable. It's
not something you'd want to do every day, but you wouldn't want to move
your furniture around every day either! (Unless you're my daughter :-)
re .8: Do there exist attractive, discreet stickers to indicate which
outlets are switched? I'm thinking of something like the stickers you get
with GFCI outlets. Sorry, labelmaker stickers (except in the basement) are
not suitable.
By the way, while construction work is in progress I find having _lots_ of
switched outlets to be very handy. With one switch, I can kill worklights,
power tools, radio, fans, etc. when I quit for the night.
|
284.59 | Dots the trick | QUARK::LIONEL | In Search of the Lost Code | Mon Aug 22 1988 16:34 | 8 |
| I would suggest a simple red dot label to indicate switched outlets.
There isn't a real need to have the word "switched".
... now if only I can figure out the three switches just inside
the doorway to the master bedroom in my new house, NONE of which
seem to do anything....
Steve
|
284.60 | | HPSMEG::LUKOWSKI | Nat'l apathy week & nobody cares! | Mon Aug 22 1988 17:09 | 9 |
| >> ... now if only I can figure out the three switches just inside
>> the doorway to the master bedroom in my new house, NONE of which
>> seem to do anything....
So it's you doing that!!! Cut it out! :^)
-Jim
|
284.61 | Hi-tech solution: X-10 | TOKLAS::FELDMAN | PDS, our next success | Mon Aug 22 1988 18:01 | 19 |
| Personally, I prefer the hi-tech solution, namely X-10 controllers.
They're expensive, they've had quality control problems in the past,
and they're not for everyone. They have much more flexibility and
power, especially with the computer interface and the radio remote.
For example, I find that having the wall switch control my bedroom
lamp doesn't do much good. I turn off the lamp by the bed at night,
so the next time I walk into the room, the wall switch doesn't do
anything. Eventually, I'll get arount to installing an X-10 wall
switch, and then I'll be able to use the remote control at the bed
to turn the lamp on and off, and still use the wall switch for the
same purpose. This depends on my not being foolish enough to plug
anything but a lamp into the switched outlet, but I can live with
that.
I still appreciate the other advice in this note, and I'll give
careful consideration to it when doing new wiring.
Gary
|
284.62 | | RICKS::SATOW | | Mon Aug 22 1988 18:03 | 13 |
| Glad I saw these notes. I thought that the electrician who wired
our addition was crazy, stupid, or incompetent. Never occurred
to me that there was a method to his madness.
One thing I would suggest is that you document what you did for
the benefit of future generations, and also explain what any code,
such as Steve's `red dot' idea means. Particularly if you have
the plugs wired in such a way they can be randomized, the next guy
can either take advantage of what you did, or at least will understand.
Otherwise, there will be a reply in the "Why did they EVER do that"
note about the crazy randomized outlets.
Clay
|
284.63 | Label Back | CURIE::BBARRY | | Mon Aug 29 1988 15:20 | 15 |
| When I was a young EE to be, I labeled all the outlets in my parents
with circuit number, adjacent outlets on same circuit and if they were
switched/unswitched. I used label tape on the BACK of the covers. I
also went to the trouble of mapping the location of all the wires.
A good way to visibally mark outlets in a kids room is with the stickers
that are sold in card shops(e.g. teddy bears). They cost about $1 for
twenty stickers and your daughter can pick ones for her personality. I
had glow in the dark monsters. If her bedroom has a small wallpaper
pattern you could make your own stickers with pieces of wallpaper.
If you do install any atypical convenience wiring please provide
the buyers of your house with an as built drawing.
Brian
|
284.216 | 3 prong recep. goes dead | NEWVAX::SHAPIRO | Dining Philosophers Eat at Fork Ipl | Fri Dec 30 1988 13:18 | 18 |
| I have a three prong receptacle that was working just fine for a while.
I used to have my surge protector (6 outlets) conncected to it. Then all of a
sudden the receptacle (both receptacles) stopped working. No circuit breaker
ever blew, and I noticed nothing else unusual. I tested it with a voltabe
tester and sure enough the outlet is dead. Since its the only three prong
outlet in the room, I am now running a fat outdoor 3 prong extension cord to
another room across the hall. Before I call an electrician does anyone have
any ideas? Should I just remove the wall plate and replace the receptacle?
I can't imagine why it would just fail out of the blue like that.
But there seems a curious coincedence that it failed right after
using it for about two weeks with the my computer connected to it through
the surge protectector. Incidentally my computer used to be connected
to it directly with no problems -- then the current drwan per outlet had to be
less as I had one device on each outlet, not two (computer and monitor)
on a single outlet.
Thanks for the help
Avi
|
284.217 | Push connectors used? | FROST::SIMON | Birds can't row boats | Fri Dec 30 1988 13:27 | 19 |
|
Hmmm. Could be that the wires were attached to the recepticle
by pushing them into the little hole in the back of it instead
of using the hold down screws. Those little push in connectors
are notorious for letting go of the wire over time.
I'd shut off the breaker and then pull the recepticle and check
for that. If they are pushed into the back, try reattaching them
via the side screws. If that doesn't work isolate the wire from
each other (and anything else) and turn the breaker back on and
use a voltmeter to see if you have any juice there. If not, you
have a bigger problem that may be best left to an electrician,
Although you could do a shorts/open test on the circuit from the
breaker panel to the outlet if you know what you are doing.
Good luck,
-gary
|
284.218 | | BINKLY::WINSTON | Jeff Winston (Hudson, MA) | Fri Dec 30 1988 13:29 | 7 |
| Perhaps its wired using the push-in connectors, and a wire came loose
(or there's an outlet with a push-in connector somewhere upstream,
and IT came loose.
I would shut the fuse off, open the box, and see if all looks in
order. If you know what you're doing, you could also test the wires
in the box with a voltmeter (with the breaker on of course)
|
284.219 | chicken and egg... | NEWVAX::SHAPIRO | Dining Philosophers Eat at Fork Ipl | Fri Dec 30 1988 13:44 | 18 |
| Thanks for the advice. I'll try it. But first a question:
I'll remove the faceplate and examine it to see if its
connected with the push wires or not, and if so I'll check to see
if they came loose and/or rewire to the screws. But how can I figure
out which switch to throw on my breaker panel? I've changed receptacles
and switches in the past, and I always threw the breaker switch before
doing ANYTHING. I used a lamp to figure out which switch to throw.
Are the three other outlets in the room pretty much guranteed
to be on the on the same circuit? I'm a little nervous about testing
it (possibly) live unless I absolutely have to (although I have done
this in the past too).
Yeah Yeah I know... I should have "mapped" all the outlets/switches
to breaker switches long ago... :-)
Avi
|
284.220 | throw the main | TUNER::COUTURE | Gary Couture - Govt. Syst. Group - Merrimack NH | Fri Dec 30 1988 14:17 | 11 |
| DONT assume anything...
When in doubt just throw the main breaker or all the circuit breakers.
try replacing the outlet since they are only $.50.
also if you have a tester, put one end in the hot slot and one in the ground
hole to see if that works. that would indicate a break in the nuetral
wire somewhere. The probem could be the neutral wire came loose from the
neutral bus bar in the circuit box.
gary
|
284.221 | Make sure your meter works! | MISFIT::DEEP | Sometimes squeaky wheels get replaced! | Fri Dec 30 1988 14:23 | 17 |
| A radical but safe method is to throw the main breaker.
However, with a little extra care, you can probably take the face plate
off and check the wires with your volt meter. (Be sure to check the
voltage on a known good recepticle to make sure your meter works!)
If you have no reading on the meter, by checking the wires directly (ie.
not just checking the recepticle, but the actual bare wire), then I would
say you have a pretty dead line. Now you have to check the recepticles
that are "upstream"...which may take some doing without a map.
Before going through all this, however, I would turn each breaker off and
back on, one by one, just to see if the circuit may have tripped without
you noticing it. Its a good idea to toggle breakers on a regular basis
anyway, but very few people do it. (I don't, but I work on the electrical
enough that it usually gets done by hapenstance!) 8^)
Good luck.
|
284.222 | no luck yet | NEWVAX::SHAPIRO | Dining Philosophers Eat at Fork Ipl | Fri Dec 30 1988 15:08 | 22 |
| re .4, .5
Well short of replacing the receptacle I did what was
suggested. I made sure my voltage tester works. Then I shut
off the main cicrcuit breaker removed the faceplate and unscrewed
the recpetacle. The connection was to the screw terminals
not the punch tabs and it was not obviously loose. I turned
power back on and carefully placed the voltage meter on
the screw terminals and then then bare wires themselves
(they protruded, but I didn't unscrew them from the receptacle
beforehand -- should I have?). In both tests I got nothing. So it looks like
its probably in the run somewhere, but I'll buy another recptacle
and test it to be sure.
PS Although this a is 3 prong outlet it has no bare grounding
wire going to the green terminal screw nor a jumper wire.
According to my "Ortho Basic Wiring Techniques" there should be
somehting wired to the green grounding screw. Also from the picture
in the book it looks like this is an end of the run receptacle
(one hot and one neutral wire coming in) if that's any help.
Avi
|
284.223 | could be a problem in a box prior to that? | FROST::SIMON | Birds can't row boats | Fri Dec 30 1988 15:20 | 14 |
|
Based on what you found in .6, maybe it is in the same circuit
that another recepticle is ahead of and the wire feeding to it
was via the push tabs in that one ...if you follow what I'm
saying. If the wires in the recepticle before it went to the screw
terminal and then the feed onto the next recepticle (the one you
are having trouble with) were fed via the push tabs, maybe one of
those came loose. In other words, a loose wire from the push tab
in another box could possibly be causing the problem.
Ain't electrical problems fun???
-gary
|
284.224 | red faced... | NEWVAX::SHAPIRO | Dining Philosophers Eat at Fork Ipl | Fri Dec 30 1988 15:57 | 15 |
| Boy is my face red! I have a switch on the outlet
which I never use because its connected to the computer and not
a light. The switch is one of those ancient round push button
things so you can't tell from looking at it if its on or off.
Well I must have brushed against it or something... come to think
of it I was giving a tour of the house to my sister and I think
she may have hit the switch then... (someone to blame it on though
it's no excuse :-) )
PS I didn't have this brilliant inspiration until after I tried every single
outlet in the house with the voltage meter as per .-1 (they all checked out).
This is kinda like debugging software ... it's always the stupid stuff that
gets ya
Avi
|
284.225 | This is always fun .. | DELNI::MCCABE | If Murphy's Law can go wrong .. | Fri Dec 30 1988 16:06 | 19 |
| If you get no current across the hot (black) there is a break in
the power somewhere down stream. If you get a hot and the plug
doesn't work, the white is broken. To check if the white makes
it back to ground (or at least that both the ground and white are
running back to the ground bar) check the resistance between the
ground and the white wire. If infinite you've likely got a break
in the white.
If nothing is working (neither white nor black) you might have a
blown breaker. Toss them all shut and reset them. Also check
bathrooms for GFI switches one may need to be reset (this may be
behind a GFI)
Otherwise you have to isolate the circuit. If you're game a door
bell and a battery are lots of fun. They also sell circuit testers.
Good Luck
|
284.226 | | NEWVAX::SHAPIRO | Dining Philosophers Eat at Fork Ipl | Fri Dec 30 1988 16:27 | 6 |
|
Re .9
Evidently you were entering .9 while I was entering .8 and i
just barely beat you. Anyhow, thank god it was just a dumb
mistake and I don't have to do all that
|
284.227 | | MTWAIN::WELLCOME | Steve Wellcome (Maynard) | Sun Jan 01 1989 12:31 | 6 |
| At least it was an easy fix! This was a useful note anyway, because
it gave us a chance to repeat the cautions against using the
push-in connections. I had exactly the same symptoms you
described, and the problem was the push-in connections in
the receptacle in the box "upstream" from the one that didn't
work. The receptacle where the problem actually was worked fine.
|
284.228 | Yeah? Well, you _ought_ to be red-faced! | ASD::DIGRAZIA | | Sun Jan 01 1989 20:41 | 10 |
|
Avi! It was just the switch! The _switch_! Ha ha ha ha!
C'mon, Avi, how dumbo can you get?!
Sheesh, the only dumber thing I can think of is losing power
to the light in the garage, digging up 70 feet of wire in the
lawn looking for a break, and only then thinking to check the
switch in the garage! But who could be _that_ dumb?
Regards, Robert.
|
284.229 | | HPSTEK::DVORAK | We're from the Govt & here to help U | Sun Jan 01 1989 22:12 | 10 |
|
On the subject of push-ins: I have heard only bad things about them
here. On the occasions I have used them, I have had trouble getting
them to grip the wire. So,
1) Why are they still made?
2) why no recall?
Any ideas?
|
284.230 | | PAXVAX::NAYLOR | Mark E. Naylor | Mon Jan 02 1989 10:34 | 15 |
| While I was back home (Pittsburgh) over Christmas I saw a new type
of outlet. My father was converting a 2-prong outlet to a 3-prong
outlet. When he started to push the wires into the back of the duplex,
I asked him why he was not using the screw terminals. He then showed
me a new type of outlet from Leviton. It has holes in the back to
insert the wire, but to secure the wire you have to tighten the
screws on the side (after first loosening them to insert the wire).
So this gives you a secure connection without wrapping the wire
around the screw.
Has anyone else seen these ?
Mark
|
284.231 | The are around here, just cost alot | CADSE::MCCARTHY | Illegitimi Non Carborundum | Mon Jan 02 1989 17:40 | 15 |
| The devices (switches, outlets...) that have the hole in the back
for the wire that is designed to be tightened with the screws are
(at least around here) expensive and the guy I sometimes work with
calls them SPEC-GRADE receptacles. I beleive they are designed for
use with THHN stranded wire (otherwise you would have to put crimps
on the ends of the stranded wire before going under the screw).
I have not seen the ones made my Leviton, only by Hubbell.
I just went to the "storage bin" and picked one up:
Federal Spec WC-596
Not cheap. If Leviton has come out with them I wonder what they
cost (not the .49 that the normal ones go for).
bjm
|
284.232 | Avi, you still have one more thing to do! | MISFIT::DEEP | Sometimes squeaky wheels get replaced! | Tue Jan 03 1989 10:14 | 10 |
| re : Avi
You still have a problem to correct!
You have a 3-prong outlet that is not grounded! You should either run a
proper ground wire to the outlet, or replace the recepticle with a 2-prong.
My $.02
Bob
|
284.233 | One More Bug | ULTRA::WITTENBERG | Secure Systems for Insecure People | Tue Jan 03 1989 17:07 | 10 |
| For an amusing bug: The toaster plugged into a GFI stopped working
suddenly (while it was on.) It worked fine in another outlet. So I
check and there's no voltage coming out of the GFI. The breaker
hasn't tripped. Pull out the GFI, no voltage to it. It's the only
thing on the circuit. Check at the breaker, no voltage at the
breaker output. It turned out that the Al bus bar had corroded, so
I removed the breaker, scraped the bus bar in the panel, and put
it all back together. It works fine.
--David
|
284.234 | a bit more help... | NEWVAX::SHAPIRO | Dining Philosophers Eat at Fork Ipl | Tue Jan 03 1989 17:27 | 17 |
| re .16
>You have a 3-prong outlet that is not grounded! You should either run a
>proper ground wire to the outlet, or replace the recepticle with a 2-prong.
I was afraid of that and had reached about the same conclusion. I can't
believe that it was previously wired with a 3 prong recetacle and
no ground wire. (is it against the code?) I'm not sure how to connect
the ground wire to the junction box. My Ortho book says something about
a bare wire but does'nt give a lot of detail. Also do I need a permit
to wire the ground? I really want the ground as the 6 prong strip
and most of the prongs going into it are 3-prong. There's no way I want
to convert to 2 prong because if I do I'll have to run a permanent extension
cord to another room or move my computer elsewhere neither of which I'm
about to do.
Avi
|
284.235 | | WILKIE::THOMS | Ross - 264-6457 | Tue Jan 03 1989 19:26 | 38 |
|
>< Note 2907.18 by NEWVAX::SHAPIRO "Dining Philosophers Eat at Fork Ipl" >
-< a bit more help... >-
>
>re .16
>
>>You have a 3-prong outlet that is not grounded! You should either run a
>>proper ground wire to the outlet, or replace the recepticle with a 2-prong.
I agree. But the best bet would be to rewire (at least) the entire room.
>I was afraid of that and had reached about the same conclusion. I can't
>believe that it was previously wired with a 3 prong recetacle and
>no ground wire. (is it against the code?) I'm not sure how to connect
>the ground wire to the junction box. My Ortho book says something about>
It sounds like your room might be wired with old BX cable with no ground.
If this is the case don't try and get away with bonding to the metal box.
If per chance you have a romex feed with a bare ground wire, you must locate
the bare wire and connect it with (2) other short sections of bare (or green
insulated wire). Connect the three together with a wire nut of the proper size.
Connect one wire to the metal box using a dedicated screw or clip and the other
to the ground lug on the recepticle. Also, make sure the source end of the feed
has a ground connection.
>a bare wire but does'nt give a lot of detail. Also do I need a permit
>to wire the ground? I really want the ground as the 6 prong strip
>and most of the prongs going into it are 3-prong. There's no way I want
>to convert to 2 prong because if I do I'll have to run a permanent extension
>cord to another room or move my computer elsewhere neither of which I'm
>about to do.
>Avi
Have you considered rewiring this particular room?
Ross
|
284.236 | | CHART::CBUSKY | | Wed Jan 04 1989 08:58 | 5 |
| Re. 2907.19 and others
Ross, Please read note 853.260+.
Charly
|
284.237 | | MAMIE::THOMS | Ross - 264-6457 | Wed Jan 04 1989 09:16 | 10 |
| Charly, My appologies for over-quoting. However, I find using edit on the base
note an easier way to answer. If doing this is against the rules of this
conference, will the Moderators please state this?
Back to the original problem: I believe there is no easy fix to the Author's
no ground problem, short of rewiring the room. The Ortho book isn't going to be
much use in this. Get an Electrician to do the rewire. Perhaps you can reduce
cost by snaking the romex and have the Electrician make up the connections.
Ross
|
284.238 | | CHART::CBUSKY | | Wed Jan 04 1989 09:59 | 17 |
| Re: (quoting) against the rules of this conference
Ross, Quoting is NOT against the rules of the conference BUT if you
read note 853.260 and the replies that follow it you'll see that the
consensus of the READERS, is to use quoting SPARINGLY.
It maybe "easier" for you to answer by "edit on the basenote note" but
it's frustrating for ALL OF US to read a 38 line reply to get your 10
lines of input.
Ross, you've given this conference some good input! We just want to see
MORE of it and LESS quoting of the previous replies.
Thanks, Charly
P.S. Moderators and readers, Sorry to deal with this here but it seemed
appropriate.
|
284.239 | | BEING::WEISS | Trade freedom for security-lose both | Wed Jan 04 1989 10:12 | 12 |
| I've kept my nose pretty much out of this, but I agree with the consensus in
853: Quoting used sparingly (perhaps a phrase or sentence to indicate what you
are responding to) is useful if you are responding to several points or to an
older response. Quoting whole paragraphs for a 1-line response just generates
an uneasy feeling of dej� vu in the readers. But there are no rules regarding
this, and there aren't going to be any, because I'm sure not going to try to
enforce anything like that. You can still reply by editing the reply you're
responding to, just delete most of the lines.
Please don't respond to this issue any more here - use 853 if you must :^).
Paul
|
284.240 | | WILKIE::THOMS | Ross - 264-6457 | Wed Jan 04 1989 10:21 | 9 |
| >< Note 2907.22 by CHART::CBUSKY >
> Re: (quoting) against the rules of this conference
O.k., I'll refrain from over-quoting in the future.
Ross
|
284.241 | | POOL::HAMMOND | Charlie Hammond -- ZKO3-02/Y05 -- dtn 381-2684 | Wed Jan 04 1989 11:28 | 10 |
| If there is no ground wire it ain't a grounded circuit and it is
NOT providing the protection that your electronic equipment may
need. Unfortunately the "right" solution, as per previous replies,
is to re-wire the room, or at least that one outlet.
An easier solution, if there is an easy (more-or-less) way to get
a cable to the room would be to install a seperate, grounded
circuit with only one outlet -- it could even be surface mounted.
Just a thought...
|
284.296 | Blowing Bulbs ? | CSMADM::EDWARDS | | Wed Jan 04 1989 11:59 | 10 |
| OK - here's a highly technical problem for all you would-be
electricians out there. I have this one light socket which has worked
fine for years until yesterday. A bulb blew. I replaced it and the
second one went almost instantly. The third one lasted worked ok
for a few hours but went on switch on this morning. Whats up ?
I can just about rationalise a power surge blowing the odd bulb
but this is just one socket. There are no other bulbs on this circuit
- Any ideas ?
Rod
|
284.297 | ?????????????? | BOSTON::SWIST | Jim Swist BXO 224-1699 | Wed Jan 04 1989 12:09 | 15 |
| Well this is pretty weird. Some (farfetched) guesses:
1) A wiring problem somewhere is putting 240V instead of 120V through
the circuit. Try a voltmeter. What else is on the circuit? - if
not light fixtures, then must be outlets. Try plugging in a floor
lamp and see what happens.
2) Bad batch of bulbs. It happens.
What else could it be? Don't tell me freak corrosion in the socket
is creating semiconductors in just the right way to make a full
wave bridge rectifier which is stepping up the voltage???!!! Nah.
|
284.242 | Might be grounded by contact only | NRADM::BROUILLET | What's another word for Thesaurus? | Wed Jan 04 1989 12:43 | 11 |
| Just because it doesn't have a ground wire doesn't necessarily mean
it isn't grounded. Some manufacturers use a spring clip over one
of the screw holes that's supposed to adequately ground the outlet.
Obviously, that's only valid if the outlet is mounted in a metal
box, AND the box itself is grounded, AND the screw is sufficiently
tightened.
I don't like these things, and always use a seperate wire, but I
think the code allows them.
/Don
|
284.298 | Examine the socket | REGENT::MERSEREAU | | Wed Jan 04 1989 13:17 | 9 |
|
I had this happen to me in one of my sockets. Upon close examination
of the socket, the metal contact was crushed in, so that the bulb
had to be screwed in too far for it to work. It was fixable with
some long nosed pliers. Take a careful look at the socket, and
compare it to a "healthy" socket.
-tm
|
284.243 | | WILKIE::THOMS | Ross - 264-6457 | Wed Jan 04 1989 13:53 | 19 |
| >< Note 2907.26 by NRADM::BROUILLET "What's another word for Thesaurus?" >
> -< Might be grounded by contact only >-
>
> Just because it doesn't have a ground wire doesn't necessarily mean
> it isn't grounded. Some manufacturers use a spring clip over one
No way! Article 250-74 Connecting Receptacle Grounding Terminal to Box.
An equipment bonding jumper shall be used to connect the grounding terminal
of a grounding-type receptacle to a grounded box.
There is an exception for surface mounted boxes, isolated grounds, special
floor boxes, and special type recepticles (which I'm sure we're not dealing with
here).
Best bet is to always ad the bonding jumper.
Ross
BTW, How did I do on the quoting? Is this an acceptable level?
|
284.244 | i'll go with a pro or a raceway/strip | NEWVAX::SHAPIRO | Dining Philosophers Eat at Fork Ipl | Wed Jan 04 1989 22:33 | 21 |
|
Thanks for all the suggestions
re .19
BX wire is the armored cable stuff according to Ortho --
steel or aluminum jacket around wires wrapped in heavy paper.
When I look carefully at the outlet I think your guess is right.
But your instructions sounded a bit much for my
level of skill/expertise (I was thrilled to be able to
replace a receptacle. If I convert the
outlet I think I'll call a pro (I'll try to save up till
I have other things for him to do).
re .25
If I did a raceway wouldn't I need another three prong outlet
to plug it into? Could that be in another room
Thanks for all the help. This is a great conference.
|
284.300 | | PSTJTT::TABER | KA1SVY -- the new lid on the block. | Thu Jan 05 1989 09:17 | 12 |
| Bad batch of bulbs is a good guess. (Especially if they were bulbs
bought from a fund-raiser kind of affair.)
Other things that kill them off fast are temperature and vibration.
Is it an outside fixture? A household bulb trying to survive the
current cold snap in New England would have a short life. They make
special outdoor lamps for that. Has something changed that would make
more vibration where the fixture is? New Laundry machines? Kids have
reached the age where they like to stamp their feet in the room above
the fixture?
>>>==>PStJTT
|
284.245 | Replace that BX! | WOODRO::THOMS | Ross - 264-6457 | Thu Jan 05 1989 15:21 | 9 |
| >
> level of skill/expertise (I was thrilled to be able to
> replace a receptacle. If I convert the
> outlet I think I'll call a pro (I'll try to save up till
Wise decision, that old BX is bad stuff. Cause of many home fires.
Ross
|
284.246 | | BPOV04::S_JOHNSON | Buy guns, not butter | Thu Jan 05 1989 16:16 | 12 |
| re< Note 2907.29 by WOODRO::THOMS "Ross - 264-6457" >
>Wise decision, that old BX is bad stuff. Cause of many home fires.
Any basis for this statement?
BX is insulated wire that uses an armored insulating jacket, that
does double duty by also being the ground carrier.
Where's the danger???
|
284.247 | | MAMIE::THOMS | Ross - 264-6457 | Fri Jan 06 1989 07:50 | 8 |
| RE:30 Yes, old BX is dangerous. I'm talking about the stuff widely used
pre-50's, the BX that used conductors insulated in rubber and cloth sheathing
and with an unbonded metal casing. The wire insulation on that type of wire
breaks down and "could" cause a short to the metal casing, which usually acts
like a high resistant path to ground. The casing will heat up like an element
on an electric range. I've seen this stuff burn into floor joists!
Ross
|
284.248 | | MAMIE::THOMS | Ross - 264-6457 | Fri Jan 06 1989 08:01 | 10 |
| >
> BX is insulated wire that uses an armored insulating jacket, that
> does double duty by also being the ground carrier.
I overlooked this statement in my attempt to not use quotes. The BX wire
currently available is good stuff. It does have a bonded metal casing and
modern wire insulation. ^^^^^^^^^^^^^^^^^^^
|
284.301 | bad 3-ways | VINO::GRANSEWICZ | Which way to Tahiti? | Fri Jan 06 1989 12:10 | 12 |
|
Does everybody else have bad luck with 3-way bulbs? These things
appear to blow (at least 2 of the settings) quite frequently in
my house. No other bulbs just these. Anybody experience short
life on 3-way bulbs?
On the brighter side, I've been using one of these blown 3-way bulbs
in my clamp on light and it appears to take frequent movement and
vibration quite well (although it blew 2 of the 3 settings). I had
a rough service bulb that lasted about 1/2 hour.
Phil
|
284.302 | Three-ways go south | COEVAX::LADEW | | Fri Jan 06 1989 12:19 | 7 |
| I agree. I've had poor luck with three-ways also. However, I have
a 50-100-150 that has survived in the TV room for the last year.
I three ways that don't last seem to be the lower wattage variety.
Comments, Ideas???
Steve
|
284.303 | Murphy strikes again ? | PBA::EDWARDS | | Fri Jan 06 1989 13:44 | 11 |
| Strangely enough the second bulb I tried was one of those three
way jobs with two ways gone already. That fixes the batch problem
i guess - they were all different types and makes of bulb. They
also did all work before they blew so that puts pay to the non
contacting socket theory. My own theory was that maybe the swith
was arcing ( it is old ) and that would produce some sort of bulb
blowing spike . I was all set to examine both the switch and the
socket this weekend but guess what ? the last bulb I put in is still
OK after two days. Maybe we forgot about Murphy ??
Rod
|
284.304 | Rough Service Bulbs | SALEM::RIEU | | Fri Jan 06 1989 15:20 | 3 |
| Are these things worth the extra money? I'm tired of replacing
the bulb in my droplight every time it takes even a mild jolt.
Denny
|
284.305 | | PENPAL::PHILBROOK | Chico's Daddy | Fri Jan 06 1989 15:28 | 9 |
| The same thing happened to me last week. We have an outdoor fixture
in our unheated mudroom. Three bulbs in a row blew -- literally
blew -- they exploded!
All 3 bulbs were the garden variety, no-name type that I bought
in a six-pack at Channel. I tried a GE bulb and it's been burning
brightly for nearly a week with no problems.
Mike
|
284.306 | Rough Service bulb works for me | MISFIT::DEEP | Sometimes squeaky wheels get replaced! | Fri Jan 06 1989 15:35 | 9 |
| re:.8 (rough service bulbs)
Seems like others in this conference have had problems with them, but I have
one in a drop light thats been burning for over 2 years without a problem.
Prior to that, I used to have to change the bulb often. I'm satisfied that
the product performs as advertised.
Bob
|
284.307 | See the Light! | CHART::CBUSKY | | Fri Jan 06 1989 15:37 | 26 |
| Re: 3 way bulbs
The reason that they always blow "2 settings" at the same time is
because the 3 way bulbs (50-100-150 for example) only have TWO filaments
in it. Blow one filament and you lose "2 settings" at the same time.
Low setting = 50 watt filament on, 100 watt filament off
Med setting = 100 watt filament on, 50 watt filament off
High setting = 50 & 100 watt filament on
So If only the 50 watt filament works you have an the lamp goes
ON, OFF, ON, OFF as you turn the switch.
If only the 100 watt filament works you have an the lamp goes
ON, ON, OFF, OFF as you turn the switch.
Re: Lamps and sockets
I also was having trouble with 3 way bulbs blowing in a particular
lamp. I replaced the socket/switch assembly in the lamp and the problem
seemed to go away! WHY, I don't know! Maybe weak contacts in the socket
was causing poor/arching connections with bulb???? The lamp did make
some snap/crackle/popping noises occasionally before I replaced the
switch/socket.
Charly
|
284.308 | More 3-way question...seeing the light! 8-) | MISFIT::DEEP | Sometimes squeaky wheels get replaced! | Fri Jan 06 1989 15:46 | 13 |
| Hey Charly!
Thanks! I always wondered how those worked, but never really knew that
I "wondered" enough to find out! 8^)
Question for the readership... In my entire life, whenever a 3-way bulbs
blows, it has ALWAYS been the 50 watt filament. Anyone ever blow the 100
watt ?
Also, as long as we're digressing, how does the bulb switch filiments in a
3-way lamp?
Bob
|
284.309 | More Light!! | CHART::CBUSKY | | Fri Jan 06 1989 16:04 | 13 |
| Re. how does the bulb switch filiments in a 3-way lamp?
If you look at the base of the 3-way bulb, you'll see that there are
three contacts instead of the "normal" two found on a a reguar bulb.
The third contact is a ring between the center button and the threaded
base.
One is the common (threaded base I believe) and the over two are for
each of the filaments. The bulb needs a 3-way switch/socket (which also
has three contacts) for full funtionality but 3-way bulbs will work in a
regular socket (only one filament though).
Charly
|
284.310 | Rough Duty Bulds Are Worth It | BUTTON::BROWN | | Fri Jan 06 1989 17:49 | 9 |
| Re .8:
Rough duty bulbs are definitely worth it. I tried replacing the bulb
in my worklight (after several years use) with regular bulbs. After
going through 3 or 4 bulbs in one weekend (any drop or jar would blow
one) I bought another rough duty bulb. It is still working after two
years. All were Sears.
Gary
|
284.311 | MAKE SURE THE 3-WAY IS TIGHT | CHET::BEAUCHESNE | | Wed Jan 11 1989 17:39 | 12 |
| RE. 3-WAY BULBS
I had recently suffered the same problem with three-ways (short
life). I was able to correct the problem in two of three bulbs
by simply screwing them in tighter. For some reason (could it have
been my four year old son running around the room? ;^)) the bulbs
had become a little bit loose. So from now on, I'll check to see
that they are secure before replacing them.
BTW - excellent NOTES file!
Moe
|
284.199 | receptacles in walk-in closets? | SICVAX::SCHEIBEL | | Thu Jan 12 1989 15:48 | 11 |
| I have read the code book over and over and my local building elctrical
fire underwriter of course doesn't want to give me a straight answer.
The closet is 8x10 but it is a closet. It used to be a bed room so one
wall has an receptacle already, but what about the others.?. Does the 6
foot rule apply to a walk-in closet? Any guidance here would be greatly
appreciated.
Bill
|
284.312 | A theory | REGENT::GETTYS | Bob Gettys N1BRM 235-8285 | Thu Jan 12 1989 20:01 | 25 |
| It has been my experience that a bulb (three-way or
standard) is likely to blow more quickly if the bulb is loose in
the socket. By loose, I mean not making good connection with the
button contact in the center and/or with the middle ring on a
three-way. The tightness of the threaded part doesn't seem to
make any difference except in how it effects the first two.
I have developed a theory (of which I have no real
proof) for why this happens. Such a loose connection makes the
connection higher in resistance than normal. Resistance in the
circuit causes heat. The center contact and the ring have very
little mass to dissapate this excess heat which is then
transfered to the post holding the filament. Also agravating
this is the fact that the same loose connection has added
resistance to removing the heat from the bulb. We all know that
a bulb in a place where its temperature is kept higher than the
manufacturer intended will burn out earlier than one in an open
socket. As I said before, this is a theory, but I think it has a
real possibility of explaining the situation.
/s/ Bob
p.s. I have noticed that bending the contacts on a loose socket so as to
apply more pressure usually cures the problem. (TURN OFF THE
POWER FIRST!!!)
|
284.200 | cap it off if they reject it. | CLOSUS::HOE | stompin' Sammy's daddy | Fri Jan 13 1989 10:34 | 12 |
| Are you building this room, remodeling two rooms to make part of
the room into the walkin closet, or is this new construction?
The mention of the "former bedroom" implies remodeling.
We had a modular home in California that had a walk-thru closet
with a built in vanity on one wall. There was a duplex outlet in
it for misc grooming appliances.
If they reject the outlet, you could remove the outlet and blank
it off by putting wirenuts on the wires and/or taping them.
cal
|
284.313 | Another theory | ASD::DIGRAZIA | | Fri Jan 13 1989 13:05 | 12 |
|
I read somewhere that the major bulb-zapper is the induced
vibration in the filament as the current rises. The magnetic
field makes the little wire gyrate, and tungsten doesn't like
to flex. (I saw a slow-motion film of a bulb lighting up once.
... amazing how much the filament wrenches around.)
So, if there's an intermittence somewhere, it's like turning the
bulb on and off a lot.
Regards, Robert.
|
284.314 | | PENPAL::PHILBROOK | Chico's Daddy | Fri Jan 13 1989 13:08 | 8 |
| We have a 100 watt clear bulb in the ceiling fixture in our bathroom.
I pulled it out the other day to wipe a spot off it and the little
spring attached to the filament came unhooked. I turned the bulb
over and jiggled it around and the spring popped back into place.
When I put it back in the socket -- it worked! Are all bulbs made
this way (with the little spring, I mean?)
Mike
|
284.201 | When is a room not a room? | CURIE::BBARRY | | Fri Jan 13 1989 13:08 | 24 |
| I think you are asking two questions?
1) Are outlets allowed in closets?
Unless there is some local ordinance against them, outlets are allowed
in closets. Placement of the outlets can be tricky, due to potential
fire hazards, but common sense should help.
2) Do I have to follow the 6 ft rule?
If it is a closet, no outlets are necessary. But, if it is a dressing
room then you would require outlets. How do you tell the difference?
That would be purely up to your building inspector. If he won't tell
you, then nobody can. He may want a more definitive plan then you have
provided. For convenience I would follow the following rules, other
people may have more suggestions.
For every clear wall greater then 3' (clear walls are any walls
with out hanging clothes or storage only built-ins) provide an
outlet at normal height. The 6 ft rule applies for clear wall
area.
For built-in make-up tables provide an outlet. Use the same
positioning rules that apply for outlets over kitchen counters.
|
284.315 | | VINO::GRANSEWICZ | Which way to Tahiti? | Fri Jan 13 1989 13:22 | 12 |
| RE: .18
So in other words the number of on-off cycles has more to do with
the life of a bulb than the length of on time. Makes me wonder
how many on-off cycles are used when these companies estimate the
life of their bulbs. My guess is 1. This might explain why my
bulbs never seem to last anywhere near the advertised life. This
sounds like a strong arguement for flourescent bulbs (they have
them to screw into lamps now). Or do those also have inherent
weaknesses?
Phil
|
284.202 | | WILKIE::THOMS | Ross - 264-6457 | Fri Jan 13 1989 15:12 | 17 |
| > The closet is 8x10 but it is a closet. It used to be a bed room so one
> wall has an receptacle already, but what about the others.?. Does the 6
> foot rule apply to a walk-in closet? Any guidance here would be greatly
> appreciated.
>
> Bill
This is an interesting question. The code 210-52 specifies kitchens, family
rooms, dining, living rooms, parlor, library, den, sunroom, bedroom, recreation
room.
Closets are exempt. However, an 8 by 10 room could be used as a bedroom. If not
by you, perhaps the next resident. I would wire it as a bedroom. The inspector
will most likely agree.
Ross
|
284.316 | I'd like to see that slo mo | FREDW::MATTHES | half a bubble off plumb | Sat Jan 14 1989 06:51 | 14 |
| On-off cycling is the culprit. It's the heat cooling cycling that
kills them I'm sure. My theory little scientific proof except that
if you notice - When does the bulb blow ?? Usually when it's turned
on - the highest stress point. Ever take a piece of metal and bend
it and bend it back and bend it ... It doesn't take very many cycles
to break it.
The problem with flourescents is the cost. Not the price of the
bulb but the price of turning it on. I've been told that if you
are going to turn the light back on within 45 minutes, then you
save electricity by leaving it on. I think you'll find that the
time-out periods of automatic lighting control systems in conference
rooms backs this up. It's not delays for short periods of inactivity
but simply the cost of turning the light back on.
|
284.317 | What about refrigerator bulbs? | MILCAT::HASTINGS | | Mon Jan 16 1989 13:11 | 4 |
| re .21
If on-off cycling shortens bulb life, (makes sense) , how come
refrigerator bulbs don't blow more often? Surely they turn on and
off more frequently than any other bulb in the house.
|
284.318 | turn off the fluorescents too! | DELNI::GOLDSTEIN | Room 101, Ministry of Love | Mon Jan 16 1989 16:26 | 14 |
| Re:.21
That it takes 45 minutes worth of electricity to turn on a fluorescent
tube is an "old wives' tale". (No sexism intended.)
What has been suggested is that fluorescent tubes wear out a bit
from cycling, and get dimmer as they get worn, so their efficiency
may decline a bit. But that's only an energy-hit if you have a
perfect servo system to turn on additional bulbs to make up for
the fading!
Arithmetic: If a bulb takes 40 watts to run, 5 seconds to get bright,
and ues 45 minutes worth of electricity to get bright, then it needs
12*45*40 watts=21600 watts of surge current to start up. Yeah,
right.
|
284.319 | The fridge light doesn't go off when you close the door | PSTJTT::TABER | KA1SVY -- the new lid on the block. | Tue Jan 17 1989 11:02 | 9 |
| > If on-off cycling shortens bulb life, (makes sense) , how come
> refrigerator bulbs don't blow more often?
I wondered the same thing about fridges and ovens. I'm told that the
lower wattage bulbs use a thicker, stronger element. I don't know if
it's true, but it sounds good. Maybe you could try sticking a 100 watt
bulb in the fridge and see how long it lasts for a comparison...
>>>==>PStJTT
|
284.320 | The light does go off when the door is shut | AKOV13::FULTZ | ED FULTZ | Tue Jan 17 1989 14:27 | 1 |
|
|
284.321 | Close the door, and the light stays on!! | EAGLE1::CAMILLI | | Tue Jan 17 1989 19:20 | 4 |
|
"The light does go off when the door is shut."
How do you KNOW?
|
284.322 | Still claim costs less to leave it on | FREDW::MATTHES | half a bubble off plumb | Wed Jan 18 1989 09:52 | 24 |
| re .23
I thiink you're missing part of the equation. It certainly does
not take 45 minutes of electric current to turn on a flourescent
light. I may be dumb, but ...
There is a certain amount of energy required to startup a flourescent
bulb. I won't go into the details. There is a certain amount of
energy required to maintain the flourescence, (light). The energy
required to maintain a fl over a 45 minute (approx.) period is equal
to the startup energy. Therefore, if you shut off a fl light and
turn it back on in less than the time period then you incur addittional
energy cost over and above what you pay to maintain the light had
you left it on.
It could very well BE an old wive's tale. But it does make sense
that there is some period of time where you save by leaving it on.
It could be that it's much shorter than 45 minutes given improvements
in technology. It was some time ago that I heard this and not from
the most reliable of sources. But your arithmetic says that I was
not at all clear in what I meant. It's the DIFFERENCE between having
it on and (starting + on time).
That clearer ??
|
284.323 | | LEDDEV::MORONEY | License and registration, please... | Wed Jan 18 1989 11:33 | 19 |
| re .27:
Go through the math again. A fluorescent bulb *can't* consume 45 minutes of
electricity in a few seconds without tripping your breaker. I'll explain:
A 40 watt fluorescent bulb running for 45 minutes consumes (45 * 60) * 40 =
2700 seconds * 40 watts = 108,000 watt-seconds of electricity, or .03
kilowatt-hours. For a fluorescent bulb to use 108,000 watt-seconds of
electricity in the 5 seconds it takes to start it, it must consume 108,000
watt-seconds in 5 seconds, or 21600 watts (108000/5). In order for it to use
21600 watts on a 120 volt circuit, it must draw 180 amps (21600/120).
I think it's a pretty safe bet that the 15A or 20A breaker on that circuit
would trip first.
It *is* true that a fluorescent tube consumes more power upon startup, but
the breakeven period is on the order of a few seconds.
-Mike
|
284.324 | What's a watt? | HANNAH::DCL | David Larrick | Wed Jan 18 1989 13:52 | 12 |
| .28 makes sense _if_ a 40-watt fluorescent bulb uses 40 watts to
maintain fluorescence. Other possibilities include:
- 40 watts is the startup energy
- "40 watts" is a nominal rating, related to either maintenance
energy or startup energy but not directly measureable
- "40 watts" is a marketing term and has nothing to do with
anything.
Does anybody know for sure?
|
284.325 | "None of the above..:^) :^) | HPSTEK::DVORAK | We're from the Govt & here to help U | Wed Jan 18 1989 17:01 | 16 |
|
I think the savings in leaving fluorescents turned on are due to bulb
life and maintenance costs, when fluorescents are used in large
buildings. When 4 pin fluorescents are started, the filaments in the
ends heat up till the bulb starts, then the filament turns off. The
typical bulb can only be turned on a certain number of times before the
heater filament breaks. Lets presume the life of the bulb is 1000
cycles (WAG), and you have 10,000 of them in your skyscraper. Every
day you have to find and replace 10 dead lamps, and pay your maintenance
people $40/hour (WAG),(what with insurance and benefits) to do it.
At some point, depending on energy costs, it makes sense financially to
leave the bulbs on all the time. It may also have security benefits
for the company and morale benefits for people who work late.
|
284.326 | | DELNI::GOLDSTEIN | Room 101, Ministry of Love | Wed Jan 18 1989 17:27 | 6 |
| Yep, .30 seems right -- if you've got a HIGH cost of replacement,
as in some industrial environments, then you leave 'em on just to
save replacement labor costs. Not much to do with energy.
I'm pretty sure the power rating is the steady-state power ("to
maintain fluorescence"), and the startup power is somewhat higher.
|
284.327 | I vote for .30 | SALEM::JWALSH | | Thu Jan 19 1989 11:54 | 7 |
| I used to work for Philips and although I worked mostly on Halogen
lamps, .30 is correct to the best of my knowledge. On startup,
a certain amount of the emitter coating is "blown off". The more
startups, the less coating and eventually no light. Also, this
is particularly important in buildings where you have many lamps.
John
|
284.328 | | VMSSPT::NICHOLS | | Thu Jan 19 1989 12:22 | 4 |
| We have a 20w fluorescent light in the basement.
We have lived in the house 15 years.
The fixture is on all the time (24 hrs per day, 7 days per w etc)
The fixture is on its third tube.
|
284.329 | Sid, could you start a new note on Fluorescent flicker? | BEING::WEISS | Trade freedom for security-lose both | Thu Jan 19 1989 14:24 | 0 |
284.67 | Putting electrical outlet in existing wall? | CDR::VAN_CLEAVE | | Wed Feb 08 1989 17:13 | 6 |
| Has anyone had a successful experience putting in a new electrical
outlet box into an existing wall? My walls are standard drywall
nailed to studs on 16-inch centers. I'm thinking of locating a
stud and cutting a hole right next to it the size of an outlet box.
Then nailing the box to the stud. Is this an easy thing to do?
|
284.68 | See 1111.35 and 1111.36 | OASS::B_RAMSEY | Bruce Ramsey | Wed Feb 08 1989 18:07 | 8 |
| They make retrofit boxes. They have "wings" on the side. You cut
a hole in the drywall, insert the box, tighten the screws on either
side of the box, and the wings tighten up against the sheetrock
and hold the box in place. Very neat and tidy.
I recommend you look at notes 1111.35 and 1111.36 for a list of notes
which discuss installing electrical outlets and various wiring topics.
The notes are too numerous to list here.
|
284.69 | electrical box in existing wall | VIDEO::FINGERHUT | | Wed Feb 08 1989 19:15 | 6 |
| > They make retrofit boxes. They have "wings" on the side.
And don't cut the hole right next to a stud, or there won't be
room for the wings on that side.
|
284.70 | don't settle for substitutes | NETMAN::SEGER | this space intentionally left blank | Thu Feb 09 1989 08:08 | 9 |
| One other warning - not everyone carries these things. some people may try to
sell you these aluminum gizmos that you bend around the box to hold them into
the wall. Don't even think of using them.
btw - there are types with other than wings that will also work. They basically
work on a similar principle. The key is that they can be physically
tightened with some screws that are integral to the box.
-mark
|
284.71 | Usually pretty easy... | VINO::GRANSEWICZ | Which way to Tahiti? | Thu Feb 09 1989 09:02 | 27 |
|
This is normally a piece of cake BUT it can be a bitch depending
on your situation.
Where are you running the power from to feed the new outlet?
And are you running anything FROM the new outlet?
Is it on an outside wall where you will have to deal with
insulation?
Is your access to the new outlet from the bottom (cellar) or
the top (attic)?
Some helpful hints:
Having two people will make the job much easier. One to wiggle,
one to grab. ;-)
Drill 3/4" holes and invest $.99 for one of those 3' long,
spring-loaded claw thingies. They make it sooo easy to grab
that wire once you spot it. (If you have to come down the wall)
You may not need one in your situation but for $.99 it's worth
having one around.
Good luck!
|
284.72 | | VLNVAX::HEDERSTEDT | T.B.S. | Thu Feb 09 1989 11:39 | 26 |
| The boxes that you need are called "old-work box". The are made of
metal or plastic. I would advise you to get a metal box as it is more
impervious to "non-professionals" installing them. This is not a dig
but it is very easy to break a plastic box if you are not carfull.It
can be confusing to the average person to wire a plastic box inline
to a exsisting run and grounding it properly!
Several other questions to ask are,
a. what kind of service do you have,15 or 20 amp. Makes a
difference!
b. is there enough slack in the exsisting run to add another box
without undue problems.
c. what is running on the circuit now? you should load the circuit
no more that 80% at any one time.
d. How old is the wiring in your house? Grounding did not really
start untill the middle 60's and was not really inforce untill
very late 60's and early 70's. This makes a difference on how
the box is grounded.
I know I must sound a bit windy but if it is done wrong,you
can have some real problems later!
Wayne
|
284.73 | Somerville lumber has them. | BPOV06::LAMPROS | Bill Lampros | Thu Feb 09 1989 11:40 | 6 |
| Somerville lumber has plastic boxes with wings. I installed two
last weekend and they work great. You can cut a hole in the drywall,
even right up against a stud, and they work with no problem. I can't
remember the price, but they were under a dollar each.
Bill
|
284.74 | More info. | BPOV06::LAMPROS | Bill Lampros | Thu Feb 09 1989 11:41 | 5 |
| Addition to .6...
I forgot to add that the boxes come with
a cardboard template to cut the right size hole in the wall.
Bill
|
284.75 | | BPOV04::S_JOHNSON | Buy guns, not butter | Thu Feb 09 1989 12:03 | 16 |
| re .3
>One other warning - not everyone carries these things. some people may try to
>sell you these aluminum gizmos that you bend around the box to hold them into
>the wall. Don't even think of using them.
Why not?
I think you're referring to "madison strips". I've used
these many times when installing new outlets in old houses
to hold metal boxes in place. Never had a problem, they hold
the box in place just fine.... I think they cost about 6 cents
each at Spags....
|
284.76 | ??? | SALEM::RIEU | Sanitized for your protection | Thu Feb 09 1989 13:14 | 3 |
| re:.8
I use them all the time too. Never had a problem!
Denny
|
284.77 | I don't like the metal stips either | DRUID::CHACE | winter's coming, so let's enjoy it! | Thu Feb 09 1989 15:31 | 13 |
|
It has been my experience that the metal strips that you insert
and then bend around the box work fine - at first, but because they
are thin metal, they slowly dig into the back of the drywall from
the force of inserting and removing plugs. After a while, they get
loose, and the looser they get the faster they dig into the wall
with each cycle of usage. Besides, you have to buy a box anyway,
and it's not like we're installing a whole house full of them, just
a few. The boxes with the tightenable wings are a MUCH better idea.
The difference in price is nothing, compared with ease of use and
the more reliable service.
Kenny
|
284.78 | | BPOV04::S_JOHNSON | Buy guns, not butter | Thu Feb 09 1989 16:48 | 11 |
| re .10
Well, I see your point, but if installed properly, and good wallboard
was used, you shouldn't have a problem. At least I haven't.
Are these boxes with the wings sold at Spags? I've never used them,
but I'll try them next time I add an outlet.
Steve
|
284.79 | another vote for wings. | SELENA::DEROSA | Massachusetts Miracle?....Haaaa! | Fri Feb 10 1989 08:30 | 9 |
|
If you have to buy a box anyway, get the one with wings it's a much
better installation. I use them all the time to add outlets and
switches. It's true what .10 said, they DO have a tendancy to loosen
up. I've seen it happen a few times.
Bob
|
284.80 | plaster ears do work - if done right | REGENT::GETTYS | Bob Gettys N1BRM 235-8285 | Fri Feb 10 1989 08:41 | 19 |
| Never having used the newer old work boxes with wings, I
can't comment on them, they sound like they should be better
than using the strips that I've always known as plaster ears.
I have used plaster ears for a number of outlets, some
of which are heavily used. If they are installed correctly, that
means TIGHT, then they work well and the installation lasts with
no problem. If they are installed loosely, then the box will
move in time (depends on how often something is unplugged and
how carefully). I've found that the trick is to grab the part
that you fold over the edge of the box with pliers, and PULL the
ear tight wile bending it over the edge of the box. If you don't
do it right, it will be loose. My biggest objection to the ears
is that you never can get that bent over portion to lie flat
against the inside wall of the box and thus you increase the
risk of having a short between the box (the ear) and the screw
on an outlet or switch.
/s/ Bob
|
284.81 | Used both, prefers wings. | MECAD::MCDONALD | Teetering on the brink... | Fri Feb 10 1989 11:43 | 10 |
|
I've installed both types. I've had the same problems mentioned
earlier with the metal strips... particluarly when I used them
on a couple of three prong outlets. The type with the wigs have
worked best for me (I've installed three in my new house). The
wings are on the top and bottom rather than the sides, so they
don't hit the studs. Builders Square has plastic winged boxes
by the dozens.
* MAC *
|
284.82 | | VINO::GRANSEWICZ | Which way to Tahiti? | Fri Feb 10 1989 13:19 | 12 |
|
RE: .11
Spag's only carries the madison straps that everybody doesn't like.
The old work boxes with the attached hold-downs can be obtained
at Sommervile Lumber. I just installed 2 of the plastic ones ($1.15)
and they work great. They are large also (3.75"x2.25") which came in
handy for the GFCI outlet. One BIG advantage to this plastic box
is that they could be removed and reused if necessary. Sommerville
also carries the metal boxes ($2.19) but they are a lot smaller.
I've used these before also and they are easy too.
|
284.83 | Tried new type box for retrofit | AISG::VAN_CLEAVE | | Mon Feb 13 1989 08:59 | 19 |
| Thanks for the tips. I tried what I think is new type of box.
It's rectangular like the others, but with no ears or tabs sticking
out. Instead, it has a sheet metal band that goes from one side
to the back to the other side; sort of a U-shape. The U-shaped
band is held to the box by a single screw that goes through the
back of the box to the band.
To install the box, you cut a rectangular hole the same size as
the box. A paper template comes with it. You insert the cable
through the box and clamp it. Then you put the box into the hole
and simply screw the single screw tight. That draws the metal band
against the other side of the wall. The ends of the band (on each
side) spread away from the box due to a wedging action built into
the band and the box. The adjustable metal tabs at the top and
bottom keep the box from moving into the wall space as the band
is tightened. Cost at State Lumber was about $2.55.
It very easy to use. The hardest part was cutting throught the
dry wall, which had a skim coat on it.
|
284.84 | Madison bars back by popular demand | AKOV68::LAVIN | | Mon Feb 13 1989 12:36 | 8 |
| I have some boxes in my house with a similar clamping arrangement.
When the clamps didn't hold so tight anymore, I repaired them with
- you guessed it - madison bars.
I too prefer the plastic box with wings. However, I haven't found any
that are more than one gang. For something like a double switch
installation I always clamp few metal boxes together and use the bars.
The wall strain has never been a problem for me with switch boxes.
|
284.85 | Lots of alternatives | VINO::GRANSEWICZ | Which way to Tahiti? | Mon Feb 13 1989 13:13 | 4 |
|
An alternative if you have to gang boxes but want good support is
to locate the box next to a stud and screw the box to it. The ganged
boxes should give plenty of room to screw or nail.
|
284.86 | they DO exist | NETMAN::SEGER | this space intentionally left blank | Tue Feb 14 1989 08:40 | 8 |
| After a lot of looking, I managed to find double-gang boxes with wings at
Builders Square. Theese boxes are indeed out there, but the problem is not
everyone carries them.
My personal recommendations is to WAIT until you find them rather than do
something you'll end up regretting.
-mark
|
284.87 | To Gang or Not to Gang | OASS::B_RAMSEY | Bruce Ramsey | Tue Feb 14 1989 12:28 | 7 |
| If you are using metal boxes, you simply take the sides off a regular
box and one side of a winged box and put the winged side back on
the regular box and put the two boxes together. (confusing enough?)
I thought the reason for metal boxes was so that you could gang
them together and not have to worry about whether you brought enough
of the "right" box to the building site. Am I missing something???
|
284.88 | | NETMAN::SEGER | this space intentionally left blank | Tue Feb 14 1989 19:34 | 6 |
| you are indeed missing something...
winged boxes (at least the ones I've seen) only come in plastic and hence
cannot be ganged as can metal ones.
-mark
|
284.89 | We must be shopping in different stores | OASS::B_RAMSEY | Bruce Ramsey | Tue Feb 14 1989 19:54 | 10 |
| .re 21
I bought 4 metal ones with wings 2 weeks ago at Home Depot. I also
bought 3 regular ones without wings and made double-gang boxes and
hybrids. (nailed one side to a stud and put a wing on the other
side) I like overkill.
I have just the opposite experience, I have never seen a plastic
one with wings. Just goes to show that where we shop has a lot to
do with what we would expect to use.
|
284.90 | ex | BPOV02::LAMPROS | Bill Lampros | Wed Feb 15 1989 13:10 | 4 |
| Somerville Lumber in Acton has single, double and triple ganged
plastic boxes with wings. I bought a single and double on Sunday.
Bill
|
284.91 | sometimes at home depot | THRUST::COOK | Yes, but am I paranoid enough? | Wed Feb 15 1989 13:47 | 10 |
| re .22
Bruce,
I bought 3 of the plastic ones with wings about a year ago at
home depot on 41. It just depends on when you shop, or which home depot
you were at. I just wish I could find a place like home depot up
here.
Al Cook
|
284.92 | thanks .24 | OASS::B_RAMSEY | Bruce Ramsey | Wed Feb 15 1989 14:37 | 4 |
| re. 24
Thanks Al. I usually shop at Home Depot on 41. I will look more
diligently next time I am in there.
|
284.104 | Electrician fixed two outlets, broke two others | XANADU::PIYANAI | | Fri Feb 17 1989 12:36 | 45 |
|
We had an electrician, Russel Electric Inc., came in to do 3 things.
1. put in a cloths dryer outlet in the basement.
2. fix the light by the front door.
3. fix two outlets in the kitchen.
Rus came and did an ok job. He spent quite a bit of time trying to
fix the outlets in the kitchen. Finally he gave up and ran a new wire
instead. He spent about 4.5 - 5 hours total for all three jobs.
He charged us $300 ($230 labor and $70 parts). He gave us estimate
just for the first one that it will be $110.
Everything was fine, excepted we found OTHER two outlets in the kitchen
which are on the opposite wall of the outlets Rus fixed not working!
They worked before Rus came in and fixed the two. So my husband called
him up and he suggested that it might be something obvious and asked my
husband to take a look. Well, my husband did and spent all evening, night
figured out that the wires to those outlets were not connected. It took my
husband sometimes because the house is old and the house has the
"old spaghetti wire" running all through the house.
Rus did say that he played around with the other two GOOD outlets to
try to figure out what the problems with the BAD ones.
We just moved into the house last week and have so many things to do that
we tried to hire someone to do some of the job.
Questions
- Should we pay Rus the whole amount of $300 ?
We would like to be fair to him since he did a good job on the other tasks.
I am sure he didn't, intentionally, leave the wire unconnected. But then,
the whole idea of having someone do the job was to give us sometimes
to breath and we ended up have to spend time on the problem anyway.
We probably are going to pay him the whole amount anyway, but thought we get
some opinions.
- Is the $300 too much for the jobs I described ?
This is just for my future reference to see if we could had got away with
someone less expensive.
|
284.105 | Offer a plan | OASS::B_RAMSEY | Bruce Ramsey | Fri Feb 17 1989 13:00 | 22 |
| Did your husband fix the other two not working outlets?? If your
husband had to clean up after a "professional" that sounds as if
the "professional" is not quite so professional. Giving the
electrician the benefit of the doubt, it is easy to create problems
when fixing others.
Disconnecting working outlets is not generally necessary to fix
non working outlets. A professional should check his work after
all through to make sure that all is put back into place.
I would negotiate a reduction in the bill. I would take the time your
husband had to spend fixing the problem and deduct that time at half
the rate the electrician gets an hour. $230/5 hours = $46 hour. $46/2=
$23 hour for your husband. Call the electrician and offer him your
plan. If he does not go for it, call the Better Business Bureau. List
him in the recommendation note and your reasons behind the recommendation.
I don't think this should go to court. Its more trouble and effort
than it warrants. Let him know that you have access to a network
of recommendations and potential customers. If he is a reliable
tradesman, he will value his reputation and offer to reduce the
bill or offer to fix it for free.
|
284.106 | I like that... | XANADU::PIYANAI | | Fri Feb 17 1989 13:15 | 12 |
|
Yes, my husband did fix the problem.
We got his name from this notesfile. More than one person recommmended
him, that's why we went with him. I did mention to him that I got his
name from the network at work. He even said, "That's why I got
a lot of jobs from DEC employees. Wish I got job from DEC itself,
though." It's not the exact words, but you got the idea.
I like your idea. I will talk to my husband about this.
Thanks.
|
284.107 | **** ATTENTION ALL NOTERS **** | BEING::WEISS | Trade freedom for security-lose both | Fri Feb 17 1989 13:39 | 10 |
| > Let him know that you have access to a network
> of recommendations and potential customers. If he is a reliable
> tradesman, he will value his reputation and offer to reduce the
> bill or offer to fix it for free.
PLEASE DON'T **EVER** hold up the threat of a bad recommendation in this file
as a way to get a contractor to be nice to you, unless you want the net police
breathing down our throats and potentially closing this file.
Paul
|
284.108 | | WOODRO::THOMS | Ross - 264-6457 | Fri Feb 17 1989 16:10 | 12 |
| >< Note 3028.0 by XANADU::PIYANAI >
> -< Electrician fixed two outlets, broke two others >-
I don't know the extent of the installation and the repairs, but $300
is not out of line. The electrician should repair his mistake at no cost.
Count yourself lucky to find an electrician that will do "old work". It
sounds like your house needs more than a couple of wiring repairs, (more
like a complete re-wire). This type of repair work is the bottom of the barrel
for an electrician, with most Homeowners reluctant to pay for proper repairs.
Ross
|
284.109 | Yep... yep... yep. | XANADU::PIYANAI | | Fri Feb 17 1989 16:27 | 18 |
|
rep .3
Got the message ! I wasn't sure about the policy. You cleared it up.
Thanks.
rep .4
You know something... I kind of agree with you. Since we called 4
electricians and Rus was the only one that showed up when he said
he would, at least the second time (He posponed the first appointment).
I guess, I didn't know what kind of supply and demand out there for
this kind of jobs.
....
Thanks all for the comments.
|
284.110 | Who is crazy here? | CIMAMT::KELLY | Feelin' a little edgy | Wed Mar 01 1989 11:36 | 77 |
| I'm looking for a sanity check with regard to a similar problem
as expressed in the base note. Here's the deal:
I contracted for the service in my 35-year-old cape to be upgraded
from 60A fused to 200A breakered. Additionally, I asked for some
seperate 20A branches to be run to existing outlets in the kitchen.
The contractor (actually, an electrician for Nixdorf Computer who
does electrical contracting on the side) quoted, after viewing
the premises, roughly $950 for the service upgrade, plus
$175 for the kitchen mods. He also said he might not be able to
do all the work in one session...the kitchen work might have to
wait for the following week.
No problem: the prices seemed fair, he arrived on time for the
initial look-see, and he came recommended. We agreed, and I sent
him a check for $400 to cover equipment purchases.
Yesterday was the day. I left a specification and a check for the
balance of the service work for him. The $175 for the kitchen we
had agreed would be handled seperately, when that work was done.
Last night I returned home and was pleasantly suprised to find all
the work had been done, exactly as requested. When I tried to turn
on the TV, nothing happened; a little fault-isolation narrowed the
problem to the 'cable box' the cable company had installed. Well,
I've had problems with this component before, so a quick call and
subsequent trip to the cable company resulted in a new box, which
worked great.
Then, I noticed the clock on the VCR wasn't working. More
fault-isolation revelaed the VCR was dead, much like the recently-
replaced cable box. Now, I'm beginning to wonder if the electrician's
installation had somehow put a spike of noise on the AC mains in
my house which caused these components to go south. It's just too
coincidental that both could have failed in a similar mode (dead)
on the same day.
So, I called the electrician. I said I thought the work was great,
and that I was satisfied in every respect, with the exception of
the components that I suspect were damaged as a result of the
installation. I proposed having the VCR repaired and working out
an arrangement to split the cost of the repair (after all, the VCR
isn't new). The cable box didn't cost me anything, so no big deal
with that.
I was honestly surprised when the electrician got all kinds of angry
and kept saying, "What am I supposed to do...go and unplug every
piece of gear in the house? I'm not liable for that!" I replied
that the reason I hired an expert was so that stupid mistakes like
this wouldn't happen; I claimed he should have warned me to unplug
any delicate equipment prior to upgrading.
After 'discussing' (he was yelling and I was doing my best to remain
at least somewhat calm), he basically said: "If you're going to
be such a jerk about this, then forget having to pay me for the
kitchen work."
Here's my questions and comments:
1. What's the opinion (OPINION) of noters on this? Should he have
warned me?
2. What is a contractor liable for? Keep in mind I was foolish
enough not to establish up front what the action would be if
problems developed.
3. The moral, as always, is caveat emptor (buyer beware): Unplug
anything valuable before playing with the juice!
Sorry to take so long to explain this.
Regards,
John Kelly
|
284.111 | | CSMADM::MARCHETTI | Mama said there'd be days like this. | Wed Mar 01 1989 11:49 | 14 |
| I think its reasonable for a contractor to warn you of potential
damage to sensitive items that people are likely to have. Most
households now have VCRs and probable half have cable boxes.
I'm an EE and I didn't think to unplug my VCR when my electrician
put in a new service entrance cable. How would the average non
technical person be expected to anticipate the need for disconnecting
equipment?
I think you were quite justified (and reasonable) handling the
situation like you did.
Bob
|
284.112 | Sometimes it just takes that one more power cycling | TEKTRM::REITH | Jim Reith DTN 235-8459 HANNAH::REITH | Wed Mar 01 1989 14:10 | 10 |
| Being a software type I'd claim its a hardware problem ;^)
I'd just chalk it up to experience. I've had my VCR and cable box go from power
outages while I was out of the house. They are sensitive and don't have surge
protection built in. You can't always get a call from the power company when
they spin down a generator at the source.
Unless you can prove that that circuit was improperly powered once (220 vs 110)
then I'd just drop it and be happy you found someone to do a good job and show
up when they said they would.
|
284.113 | Sounds like you got a good deal | AKOV13::FULTZ | ED FULTZ | Wed Mar 01 1989 16:06 | 13 |
| I don't understand why the upgrade did anything to your equipment.
I had the same type of thing done in my house (60A fuse to 200A
breaker). I didn't unplug a thing, and didn't have a single problem.
It sounds like the guy gave you a $175 break to cover the damage.
This sounds like it is more than fair, since you said the VCR was
old. It almost sounds like the guy was so angry that he gave you
more than maybe you should have gotten. After all, you were willing
to split the repair charges. If the repair charges were going to
be $175, then I might consider getting a new VCR.
Ed..
|
284.114 | Sanity check, pt. 2 | CIMAMT::KELLY | Feelin' a little edgy | Thu Mar 02 1989 09:55 | 23 |
| The electrician left a message on my answering machine yesterday:
he apologized for getting heated...said he had just finished arguing
with his wife prior to talking to me and was steamed to begin with,
that he'd never encountered a VCR-cable box problem like this before,
and he wanted to make the situation right, whatever it took. I
felt much better after getting the message, probably because I feel
vindicated, somehow. The best part is that now I feel like I can
do business with the guy again.
Absolutely agree with -.1: He cut off his nose to spite his face.
In light of his call, I left a message on his machine (these half-
duplex conversations are wierd!) saying I'd be glad to go back to
what I originally proposed: we split the cost of the VCR repair,
and I pay him the $175.
The VCR cost about $.20 to repair: blown (and I mean BLOWN...there
was no fuse left!) fuse.
Regards,
John K.
|
284.115 | good conclusion | TFH::DONNELLY | Take my advice- Don't listen to me | Thu Mar 02 1989 23:59 | 6 |
| happy ending i'd say. you're both happy. he's still got a good reputation
here, and now, so do you! a lot of people would have found the 20 cent fix
and still told the guy to go packing. you know i don't mind paying honest
people what i owe them, but it really burns me to pay $1 to the other type.
craig
|
284.116 | Neutral connected last ==> 220V! | HANNAH::PORCHER | Tom, Terminals Firmware/Software | Mon Mar 06 1989 12:17 | 16 |
| Re: .6
If your electrician connected the neutral line last when re-connecting
your house to the supply, the result could be nearly 220V across some of
your appliances. This is because one "leg" likely has more things
on it than the other-- the one with the more current draw gets less than
110V and the other leg gets more! If the imbalance is severe, that
could mean nearly 220V applied to some appliances.
This may have happened when he plugged in the meter. I think it the
electrician's fault, though, since this could be prevented by not
throwing the main breaker until ALL connections have been made
(including putting the meter back in). Or he may have made a mistake
and not connected the neutral line before first flipping the main
breaker.
--tom
|
284.117 | Grounded outlets -- which way is up? | HANNAH::PORCHER | Tom, Terminals Firmware/Software | Wed Mar 08 1989 08:09 | 132 |
| The following notes from the our local facility conference seem
to be relavent here...
Which way will you install your next outlet?
--tom
<<< REGENT::SYS$SYSDEVICE:[NOTES$LIBRARY]WESTFORD_OFFICE.NOTE;1 >>>
-< Westford Facilities Conference >-
================================================================================
Note 140.0 Why are the outlets upside-down? 7 replies
HANNAH::PORCHER "Tom, Terminals Firmware/Software" 6 lines 3-MAR-1989 13:43
--------------------------------------------------------------------------------
Normally, the ground pin is on the bottom. But I just noticed
that every outlet I have seen is upside-down!
I presume this isn't intentional, but I wouldn't have this
electrical contractor wire my home!
--tom
================================================================================
Note 140.1 Why are the outlets upside-down? 1 of 7
VIDEO::FINGERHUT 13 lines 3-MAR-1989 13:58
-< Why the outlets aren't upside down >-
--------------------------------------------------------------------------------
> Normally, the ground pin is on the bottom. But I just noticed
> that every outlet I have seen is upside-down!
>
> I presume this isn't intentional, but I wouldn't have this
> electrical contractor wire my home!
If a plug isn't plugged in all the way here, and a wire dropped on
top of it, the first thing it would hit is the ground.
In your house, the first thing it would hit are the hot and neutral
prongs of the plug.
Good thing you didn't wire this building!!
================================================================================
Note 140.2 Why are the outlets upside-down? 2 of 7
HANNAH::GLANTZ 2 lines 3-MAR-1989 14:50
-< The Real Reason >-
--------------------------------------------------------------------------------
I recall, from an OSHA lecture I heard at DEC, that the code now
requires the "upside down" outlet.
================================================================================
Note 140.3 Why are the outlets upside-down? 3 of 7
REGENT::MOZER "H.C.C. ;-)" 4 lines 3-MAR-1989 15:20
-< Makes sense to me >-
--------------------------------------------------------------------------------
I guess that explains why the new ground-fault interrupter I bought
has to be mounted with the 3rd (ground) pin on top in order for
the "Test" and "Reset" button wording to be right-side-up!!
================================================================================
Note 140.4 Why are the outlets upside-down? 4 of 7
REGENT::MERRILL "Take that <frown>, turn it upside " 22 lines 6-MAR-1989 09:37
-< thoughts on three >-
--------------------------------------------------------------------------------
Lab: "Sort the ground wire first."
The falling-wire idea sure makes sense for labs and industrial
applications but less sense for home applications where the "old" rule
should apply: where people are more of a hazard than are wires:
Old: "The ground wire should be the last one pulled out."
This can be interpreted such that if the plug is mounted above waist
height then put the ground on the bottom; if the wire might be stepped
on by a passer-by (as in a hall socket) then put the ground on the
bottom. - that's why most (old) household wirings have "little faces"!
Note that I am just trying to explain why home electricians tended
to do it that way. Today, it may be smarter to put the ground on
top around the house because of the danger to little people who
like to put paper clips in holes (they are more likely to put something
in the TOP hole first!) or WORSE to "kiss the little face!!"
Rick
Merrill
================================================================================
Note 140.5 Why are the outlets upside-down? 5 of 7
HANNAH::PORCHER "Tom, Terminals Firmware/Software" 14 lines 6-MAR-1989 12:19
-< As The World Turns... >-
--------------------------------------------------------------------------------
Dave, that's a good point, and probably why OSHA has made the new rule.
However, a lot of gadgets assume that your outlets are mounted with
the ground on the bottom-- that includes polarized timers, remote-control
gadgets, modem power supplies (to name those in my house).
I guess the standard will change, and over time, all devices will reverse
their orientation. Until then, we'll probably see a mix of both ground-down
and ground-up devices. The first one I ever heard of was in .3.
I guess all new homes will be built with outlets oriented horizontally :-).
As a aside, does it feel better to be ground-down or ground-up?
--tom
================================================================================
Note 140.6 Why are the outlets upside-down? 6 of 7
REGENT::POWERS 7 lines 7-MAR-1989 09:50
--------------------------------------------------------------------------------
< Note 140.5 by HANNAH::PORCHER "Tom, Terminals Firmware/Software" >
> I guess all new homes will be built with outlets oriented horizontally :-).
But note! The sideways outlets have their neutral lug up so that if you
drop something on them it will touch neutral before hot. (Ground is then
to the left.)
================================================================================
Note 140.7 Why are the outlets upside-down? 7 of 7
REGENT::JONES 10 lines 7-MAR-1989 10:01
-< OSHA's right >-
--------------------------------------------------------------------------------
I would like to cite a personal experience which reinforces the
new convention of locating the ground prong upwards on three-prong
electical outlets. In my home, which is wired the other way, the
screw holding the cover for an outlet had loosened. This caused
the cover to fall. Being a metal cover, this resuted in a shower
of sparks, the welding of the cover to the plug and the popping
of a circuit breaker. Under some conditions this could have caused
a fire.
Seems that OSHA may have the right idea.
|
284.93 | box depth problems | THRUST::THISSELL | George Thissell | Thu Mar 30 1989 15:55 | 37 |
| Hi,
I've recently installed a switch in a room that controls some
recessed lighting. The lights are up and everything works fine.
My problem is putting the swtich inside a box. The switch is
a couple of inches from an existing switch, one that is mounted
on a door frame. I've installed switches before and always used
the "old work box" with the wings that tighten up against the
dry wall when you turn the screw. The problem with this mount
is that the depth of the space behind the wall to the closet
behind it is only 2.25 inches. The old work box is 2.5 inches
deep. So my options are: ?
1. don't use a box.
Can this be done ? Can I mount a switch to the wall
without using a box ? A point to remember: the switch
is a dimmer one,so it is going to be constandly
"pushed", i.e. to turn it on and off, as opposed to
regular swith, which goes up and down for on/off.
2. use another type of box.
I've read that there are plastic boxes available.
I've never seen any. Are they "less deep" than the
old work box ?
Any suggestions ? The wall around the new box isn't too sturdy anymore,
as the old work box didn't come out of the wall without a struggle.
I didn't realize the depth problem until after the box was inserted
into the hole.
Is there a way of strengthening the wall from behind the wall?
Thanks.
George
|
284.94 | | NSSG::FEINSMITH | I'm the NRA | Thu Mar 30 1989 16:37 | 8 |
| I believe that the code will require that the dimmer be enclosed
within a box. I have seen shallow boxes, but without knowing the
type of dimmer you have, I don't know if it would fit. The sze of
a box is governed (besides physical limitations) by the number of
wires within the box, so if you only have 1 romex in and 1 out,
it this may not be a problem.
Eric
|
284.95 | Thin Switches for Thin Boxes | OASS::B_RAMSEY | Beautiful plumage the Norwegian Blue | Thu Mar 30 1989 17:23 | 15 |
| They have boxes of varying depth. But as mentioned in the earlier
reply, code determines the minimum size box for the application.
Dimmer switches come in different sizes. I replaced a dimmer about
a month ago and found they have a "slim" version which is at least
half as thick as the regular switches. They also have dimmer switches
which turn to turn on and continue to adjust brightness level.
This would help alleviate some of the stress on the weakened wall.
They also have dimmers which look like regular flip switches but
instead of a two position they are off at bottom and brighten as
they go towards the up position. All of those I saw were made by
General Electric. I was shopping in Atlanta Georgia at Home Depot
so I don't know of any places in the New England area to look for
these things.
|
284.96 | Fix the wall | HANNAH::DCL | David Larrick | Fri Mar 31 1989 14:10 | 4 |
| You didn't describe just how the wall is damaged; if it's, say, badly
cracked drywall, you'll need to cut out a rectangular section, patch,
and paint. Don't expect damaged drywall to support your new box very
securely; a poorly-secured box is almost as dangerous as no box.
|
284.97 | | NETMAN::SEGER | this space intentionally left blank | Mon Apr 03 1989 21:44 | 9 |
| I'm still confused as to why you wall isn't a full 3-1/2" thick. Is there a
hunk of 2X4 in the way (sounds like there might be). I had this problem with an
outlet I installed so I got out my handy chisel and cut away enough stud to get
the box in. Might that be an option for you?
Perhaps if you can describe the obstruction we can come up with a way to deal
with it.
-mark
|
284.98 | 2 by 3 construction | LDP::BURKHART | Diaper Repair Man | Tue Apr 04 1989 08:54 | 33 |
|
From the description it sounds like he has a closet made
using 2x3 construction, a common problem with interior walls in
DIY remodels.
Hopefully you don't have more than 2 wires needed in the
box so you can use a shallow box that would take care of the box
problem.
As far as patching the wall a trick I've used is to get
some 1/4 inch lattice and cut as long a piece as you can fit into
the whole in the wall along either side of the opening and drill
screw and counter sink from front. see diagram below. This will
stiffen up the wall along on either side of the wall enough to so
the little wings will not pull through. And all you have to do
is patch over 4 screws.
...Dave
+======+ +======+
| o | | o |
| l |+-------+| |
| a || || |
| t || whole || |
| t || for || |
| i || box || |
| c || || |
| e |+-------+| |
| o | | o |
+======+ +======+
|
284.99 | | THRUST::THISSELL | George Thissell | Tue Apr 04 1989 09:17 | 18 |
| Hi,
Yes, the obstruction behind the wall is a linen closet.
Directly behind the hole for the box is a stud for the
closet. I only have the 1 wire for the lites going to
this switch.
I have yet to see a box that is 2.25 inches deep or less
in a store that I have looked in. I must not be looking
in the right stores, but I'll continue to look.
The trick with the lattice seems like something that I
could handle, I'll have to give it a try. Thanks for the
tip, it sounds like it should stiffen the wall enough.
George
|
284.100 | Spags | GIAMEM::S_JOHNSON | Buy guns, not butter | Tue Apr 04 1989 12:09 | 13 |
|
In my 53 year old 2 family, most of the inside walls are not very "deep".
I don't know why its so shallow in there; the walls are plaster and lath.
But I've managed to fish lots of romex throughout the house.
So I've had to use shallow metal boxes instead of the deeper ones made of
both metal and plastic (with the wings) . They're available at Spags.
I'll try to remember to measure the depth, but I would say that it's no more
than 2 or so inches.
Steve
|
284.101 | | THRUST::THISSELL | George Thissell | Thu Apr 06 1989 09:24 | 15 |
| > So I've had to use shallow metal boxes instead of the deeper ones made of
>both metal and plastic (with the wings) . They're available at Spags.
I checked out Spag's last night. They had the shallow metal boxes,
but they didn't have any shallow plastic boxes. I asked one of the
guys working there if they carried any of the shallow plastic ones
with wings and he said the only plastic boxes they carried were
these big boxes, (i'm guessing they were 3x3x3) which was not what
I was looking for.
The shallow metal boxes were 2" deep, but didn't have the wings.
Any other suggestions as to where there might be some shallow boxes
with wings ?
George
|
284.102 | Go to a real electrical supply house | HANNAH::DCL | David Larrick | Thu Apr 06 1989 12:15 | 13 |
| Any well-stocked electrical supply house should have all conceivable
combinations of deep, shallow, metal, plastic, wings, clamps, whatever.
More expensive than Spag's, but for quantity=one, who cares? The
counter help will probably be less patient and helpful than at your
friendly neighborhood hardware store, so know what you want.
I've bought specialized electrical supplies at:
- Marlboro Electric, on Rt. 85 about 1/2 mile north of the Registry.
Use the side door - the front door is for the lighting showroom
- Maynard Supply, on Rt. 62 heading toward Concord. Open until noon
on Saturdays.
|
284.103 | Madison Bars replay | AKOV88::LAVIN | Oh, It's a profit deal | Thu Apr 06 1989 13:36 | 2 |
| Also, you can use "madison bars" with a metal box. They are
discussed earlier in this note.
|
284.118 | need a way to find existing electric wiring runs | BEING::MCCULLEY | RSX Pro | Fri Jun 09 1989 19:12 | 21 |
| I've just scanned the index and some selected notes from the various
keywords concerning electrical work and haven't found an answer
for this yet so I'm assuming that it's a new question...
Is there any sort of device/tool for locating existing wiring runs
within a wall, sort of like a studfinder for studs?
My problem is that I need to relocate a couple of outlet boxes that
were originally placed in inconvenient locations (like, where I
want to mount a medicine cabinet in the bathroom) and I'd like to
know if any of the possible new locations might be convenient to
the existing wiring run. Given that there is some flexibility in
the new location, I would rather be able to choose an intended spot
that minimizes hassle, like fishing wire, if at all possible before
cutting holes in the walls to find out what's inside there. So,
lacking x-ray vision, I'm hoping to be lucky and find that there's
a tool to help me out.
Can anybody give me a pointer, or suggestions for solving my problem?
Thanks - Bruce
|
284.119 | I've seen one (now, where was it?) | STAR::BECK | Paul Beck - DECnet-VAX | Fri Jun 09 1989 22:09 | 4 |
| I've seen some ads for a gadget that might help. It locates wires in
the wall by detecting electric fields. Problem is, I can't really
remember where I saw it advertised: probably Leichtung's catalog, or
possibly either Sharper Image or Brookstones. Someplace like that.
|
284.249 | 2-prong to 3-prong upgrade for dummies | SML16::RYAN | DECwindows Mail | Sun Dec 17 1989 14:46 | 26 |
| I've searched through old ELECTRICALly-keyworded notes, found
some that touched on this topic, but from the point-of-view
of having some basic electrical knowledge. I think it deserves
its own topic.
Is upgrading grounded two-prong outlets to three-prongs something
that can be done easily and safely by someone with no electrical
knowledge whatsoever? Any unusual/potentially dangerous situations
to look out for (i.e., wires the wrong color)? I believe that
it's just a matter of
A. Test the outlet to make sure it's grounded (just because the
few our inspector tested were grounded doesn't mean they
all are)
B. Turn off the circuit-breaker for that outlet (we've already
mapped the circuits)
C. Take out the old outlets and put in the new ones, making the
appropriate connections (explanations in simple one-syllable
words welcome:-).
If it's really that simple I'd hate to pay an electrician to do it,
but my wife's a little uneasy about doing our own wiring. Also, I
know the permit rules in Mass are excessive, but something this simple
wouldn't require a permit, would it?
Thanks, Mike
|
284.250 | | HANNAH::DCL | David Larrick | Sun Dec 17 1989 18:16 | 67 |
| I'm pretty sure this matter has been discussed in several places, but I couldn't
find any of them. I seem to remember that they're scattered tangents from other
discussions, which is reason enough to start a new topic. If anybody finds
those existing discussions, please point to them here.
Actually, I found 2907.19 ff, but that discussion is almost entirely content-
free. (My apologies to those who contributed to that discussion; perhaps I was
put off by the tangent-within-a-tangent about over-quoting in replies!)
Re wires the wrong color and other hazards: anything's possible. Guard against
errors in your circuit map by not trusting it: use it to decide which breaker
to turn off, but then use a circuit tester (one that you know to work!) to make
sure it's dead before you remove the faceplate.
Assuming that your predecessor followed Code, the rule is white (-insulated)
wire to silver screw, black (-insulated) wire to gold screw, and bare wire to
green screw. If the existing installation doesn't follow these rules, you
should change it to do so if possible. The goal is _both_ to have the proper
side of the circuit connected to the proper holes in the outlet (for the safety
of people who plug things into that outlet), _and_ to use the proper-colored
wires inside the walls (for the safety of people who will work on the wiring in
the future).
An interesting problem occurs with knob-and-tube and other old, pre-colored-
insulation wiring technologies: no color coding! If you're looking at
grounded service, though, you don't have that problem.
Re "testing the outlet to make sure it's grounded": as a matter of curiosity,
how are you going about this?
Re the actual connections: color coding as above. Use the screw terminals, not
the push-in connections. If you're lucky, the way the wires are bent for the
screws on the existing outlets will match the screws on the new outlets, and all
you'll need is a screwdriver; otherwise, you'll need needle-nose pliers and wire
cutters too. Ah, another hazard: cut-off wire ends can fly into your eyes. If
you can't remember to cut away from yourself, wear eye protection.
I assume there's already a (bare) ground wire to the box. You need to ground
the green screw as well; if there's enough slack, just loop the wire under, but
there probably isn't, so you'll need to cut the existing wire, add an additional
length of bare wire to the green outlet screw, and connect all three (the two
cut ends and the new one) with a wire nut.
If you encounter anything you don't understand, STOP. Don't guess; figure it
out, or get help. Make an accurate diagram of how things are connected, so you
can put things back if necessary. Sometimes making a diagram will make you slow
down enough that you'll figure out what's going on by yourself.
Testing: the first thing you plug into your newly-rewired outlet should be a
circuit tester to make sure everything's OK. You can buy a nifty three-prong
tester that lights up in various ways to indicate various faults. Or you can
use a regular two-legged tester; it just takes longer. The three-pronger is
cheap, quick, fun, and it's what the Maynard electrical inspector uses. It also
makes a great Christmas present for your electrically-active friends...
re permits: technically, I believe that this work does require a permit in
Massachusetts (but I don't know for sure). In some towns, homeowners may pull
permits for electrical work they do in their own houses, and an inspection is
included in the permit fee. (Note that an official inspection might make your
wife happier about the whole process.) Other towns don't allow anyone except a
licensed electrician to pull an electrical permit. (What town are we talking
about here? Maybe somebody knows what the situation is there...)
I've deliberately used a rambling approach here (rather than a step-by-step one)
because I can't predict what you'll find inside those boxes. You'll be better
prepared to deal with the unexpected if you understand the underlying reasoning,
rather than relying on a cookbook approach. Besides, rambling is more fun.
|
284.251 | | GOSOX::RYAN | DECwindows Mail | Mon Dec 18 1989 12:29 | 27 |
| Thanks, Dave. I did run across those tangents, but since they
were all tangled up with other topics, and not very clear to
someone not already versed in electrical terms, I felt it should
have its own topic.
>An interesting problem occurs with knob-and-tube and other old, pre-colored-
>insulation wiring technologies: no color coding! If you're looking at
>grounded service, though, you don't have that problem.
Don't be so sure:-). I do know of a couple of places with knob-and-
tube in the house. Presumably any grounded outlet is not going
to have knob-and-tube, though, correct?
>Re "testing the outlet to make sure it's grounded": as a matter of curiosity,
>how are you going about this?
Our home inspector used some gadget that touched to the screw
to test if our outlets were grounded - presumably we could easily
find the same thing at a hardware store (along with the circuit
tester you mention, which I assume is a different gizmo).
>(What town are we talking
>about here? Maybe somebody knows what the situation is there...)
Pepperell.
Thanks, Mike
|
284.252 | A real novice electrical person | VMSSPT::NICHOLS | Herb -CSSE support for VMS at ZK | Mon Dec 18 1989 13:04 | 4 |
| Do I understand correctly that so far this discussion assumes the
wiring going to the outlets is 3 wire?
Suppose it is only two wire? (this is what I assume to be the case for
my 35 yr old house, but I don't really KNOW!)
|
284.253 | | VINO::DZIEDZIC | | Mon Dec 18 1989 14:33 | 9 |
| If the feed is 2-wire then you'll have to run a separate ground
wire to EACH outlet. This is possible, but somewhat expensive.
This was the method used in building a 1950s-era house in which
I lived when I was in Michigan. Apparently the builder/electrician
had lots of 2-wire cable to use up but wanted everything grounded,
so they ran the separate ground to each box.
If the feed is 2-wire DO NOT put a grounding-style outlet in
unless you run a ground wire to the outlet.
|
284.254 | | HANNAH::DCL | David Larrick | Mon Dec 18 1989 15:26 | 22 |
| .2> Presumably any grounded outlet is not going
.2> to have knob-and-tube, though, correct?
The only way I know of that know-and-tube could produce a grounded outlet is if
somebody later ran a separate ground wire as in .4,
Re your (inspector's) method of testing a 2-prong outlet to see if it's
grounded: there are several conditions other than a proper ground that would
satisfy this test. Maybe I'm excessively fussy, but if it were me, I would want
a few other indications that the ground wires in the house are correctly
installed. I would start at the breaker panel/fuse box, and examine the
condition and workmanship of the ground bus. Then I'd check the integrity of
its connection to earth ground (a large, bare wire connected to a water pipe or
to a ground rod). I would trace the wiring to a few outlet boxes to ensure that
there's an unbroken ground path. And I would look around for secondary earth
ground connections, which somebody might have thought would be easier than
running all that wire around (but which are in fact a bad idea).
As I say, maybe I'm excessively fussy. I also have a turn-of-the-century house
that contains every conceivable wiring technology, mostly with excellent
workmanship and materials but with some inexcusable shortcuts here and there.
|
284.255 | | QUARK::LIONEL | Free advice is worth every cent | Mon Dec 18 1989 17:22 | 9 |
| I am also in this situation. Many of the outlets in my new house seem
to have been wired with cable that had no ground conductor. The house is
23 years old. At least one of the boxes itself does not appear to be
grounded.
Somewhere in this conference I saw a discussion of how one could use
a GFCI to allow a three-prong outlet. Can anyone provide a pointer?
Steve
|
284.256 | some cautions | REGENT::GETTYS | Bob Gettys N1BRM 235-8285 | Mon Dec 18 1989 19:15 | 21 |
| One kicker in this is that it is not always possible to
tell looking inside a box if there is a ground or not.
In my 50's style ranch, the wiring is grounded, but the
ground wire never enters the box. Evidently, a reasonable way to
do the grounding in those days was to wrap the bare wire from
the romex around the end of the romex and capture the wrapped
part with the box cable clamp. Sometimes you can see the ground
wire, but you often can't. This does make the box an integral
part of the ground system and requires that the box clamp be
tight! Not the best of all possible worlds, but better than
nothing.
The invisibility would also be the same if the grounding
depended upon old fashioned bx cable which was proven to be a
not so good ground and is now used mainly for mechanical
protection. (There is special BX that properly carries a ground,
but that only confuses the issue unless you know that is what
was used.)
/s/ Bob
|
284.257 | What does the code say about adding a groudn wire? | VMSDEV::HAMMOND | Charlie Hammond -- ZKO3-02/Y05 -- dtn 381-2684 | Tue Dec 19 1989 11:21 | 15 |
| My understanding is that using a separate ground wire with a two
wire cable does NOT meet code for new construction. I don't
understand this fully, but apparently if the ground wire is not
run close enough to the cable with the hot and neutral wires it
may not work as well as it needs to for safety.
I don't know what the code says about retrofits for existing,
ungrounded, two wire circuits, but the above seems to suggest that
there are special rules to follow and special test to ensure that
the resulting ground does work properly.
Perhaps one of the more code-knowledgeable people who follow this
file can offer an explanation. My only retrofit experience in this
area involved running new "2+ground" cable from the circuit
breaker to re-modeled bath and kitchen areas.
|
284.258 | NEC quote for replacement receptacles | CSCMA::LEMIEUX | | Tue Dec 19 1989 14:39 | 72 |
| Hi, maybe I can shed some light on this subject:
The NEC covers this subject in article 210-7, receptacles and cord
connectors. I will point out the particular paragraphs for reference
if some of you have an NEC book handy.
210-7a, receptacles on 15 and 20 amp branch circuits shall be of
the grounding type and shall be installed only on circuits
of the voltage class and current for which they are rated,
except as provided in tables 210-21(b)(2) and(b)(3).
(exception: Nongrounding type installed in accordance with
210-7(d), exception.
210-7b, To be grounded. Receptacles and cord connectors having
grounding contacts shall have those contacts effectively
grounded.
(exception: recep. mounted on portable and vehicle mounted
generators.....250-6
(exception: Ground fault circuit interupter replacement
recept. as permitted by section 210-7(d),exception
210-7c, Methods of grounding. ( this paragraph explains where
the ground contacts are to be connected to the equipment
ground conductor, also includes three fine print notes.
It really should be read through to fully understand
it.)
and now for the important one......
210-7d, Replacements. grounding type receptacles shall be used
as replacements for existing nongrounding types and
shall be connected to a grounding conductor in accordance
with (c) above.
(Exception: Where a grounding means does not exist in
the receptacle enclosure either a nongrounding or
a ground-fault circuit interupter type of receptacle
shall be used. A grounding conductor shall not be
connected from the ground fault circuit interupter
type receptacle to any outlet supplied from the ground
fault circuit interrupter type receptacle.
newly added : Existing nongrounding type receptacles shall be permitted
1990 code : to be replaced with grounding type receptacles where
: supplied through a ground fault interrupter type
: receptacle.
I tried to be as accurate as possible in typing this from the 1990
NEC code book. But a person should be very familiar with the electrical
industry in general, before trying make interpretations directly
from the NEC. I have been working with this and other similar
documents for 15 years and have come to one conclusion, it is very
difficult to interpret this document, it was never intended for
an audience not trained in this field, and I have even hard a hard
time getting two professional electrical inspectors to agree on
an interpretation at the same time! Which should say something about
the way this document is written.
I hope I have not been too long winded, and also hope this helps
some of the homeowners here do some of their own work safely.
Although I am a licensed electrician, I do believe it is a
homeowners right to be able to perform their own repairs!
Paul
|
284.259 | | STROKR::DEHAHN | | Tue Dec 19 1989 15:08 | 11 |
|
Re: ground wire and clamp
My last ranch was wired this way. I upgraded to grounded outlets by
straightening out this wire, attaching a screw to a threaded hole in
the metal box (NOT the clamp screw, this is against code), looped the
wire around this screw and then attached the end to the green screw on
the duplex outlet. That way the box AND the duplex are grounded.
CdH
|
284.213 | 15 amp vs. 20 amp sockets | NACAD::ARRIGHI | open the pod bay door, HAL. | Fri Jan 05 1990 12:49 | 15 |
| This discussion applies to 115v circuits only.
My understanding is that the code prohibits using 20 amp electrical
outlets (the kind with the "T" shaped slot) on 15 amp circuits. I can
understand this except for two things. First, I have never seen an
appliance with the special 20 amp plug (even my large 115v air
conditioner has a regular 3-prong plug, although it is intended for a
20 amp circuit). Second, the 15 amp sockets are inferior to the 20 amp
versions -- I've had to replace some in which the blades lose their
ability to make good contact.
Are there any 15 amp sockets made with the same heavy duty contacts
as the 20 amp versions?
Tony
|
284.214 | Preventing overloads | VINO::DZIEDZIC | | Fri Jan 05 1990 13:00 | 9 |
| Your understanding is correct. The keying is intended to prevent
insertion of a 20 amp appliance plug into a 15 amp branch circuit
outlet. Sure, the 20 amp appliance would probably blow the fuse/
breaker, but in the case of fuses Joe YoYo would probably stick a
penny behind the fuse. The overload could result in a fire.
The 69-cent duplex outlets sold at Sommerville and etc. are worth
what you pay for them. You can buy higher quality units (such as
Hubbel) but be prepared to pay several bucks for each one.
|
284.215 | Try a spec grade outlet | MAKITA::MCCABE | | Mon Feb 05 1990 18:05 | 5 |
| Spec-grade outlets are one step above a generic outlet and hospital
grade are one step above spec grade. A spec grade outlet should
be fine for heavy duty use.
Chris
|
284.176 | installing outside outlet; outside extension cords? | TOOK::M_OLSON | | Wed Feb 07 1990 15:41 | 16 |
| Moderators: I looked for a note on this topic, but failed to find one. I'm
pretty ignorant when it comes to wiring, so just let me know if
I simply missed the information.
I have a water bucket heater for my dog's water bucket. This thing has
signs all over it that say things like "plug into properly grounded outside
outlet. don't use an extension cord. have an electrician install an outlet
if you don't have one". Well, why can't I use an outside extension cord?
What's the difference between an extension cord and a wire attached to a
wall?
You can buy outlets and conduit. Can I run conduit from an inside outlet
to an outside outlet that I install? What is so hard about this that it
takes an electrician? From my trip to the hardware store, it looks a lot
easier than replacing an improperly wired light fixture (a task in which
I eventually triumphed).
|
284.177 | | ULTRA::WITTENBERG | Secure Systems for Insecure People | Wed Feb 07 1990 15:58 | 11 |
| For one thing, outside outlets must be GFIs (Ground Fault
Interrupters). They're almost as easy to install as standard
outlets, so that shouldn't bother you.
Extension cords shouldn't be used permanently, as they tend to be
exposed to abuse.
Before installing a new outlet, check that the circuit that you're
adding it to has enough capacity.
--David
|
284.178 | Test as required | SHRFAC::BOUDREAU | | Thu Feb 08 1990 03:57 | 16 |
| RE-1
Correct.
RE-2
Don't forget to test the GFI monthly. They tend to go
bad quicker (wont trip) if installed outside and not tested properly.
The importance here is when the heater goes bad it may ground out.
If you dog goes to get a drink after it has grounded out, your dog
would stand the risk of electrocution.
Remember with a heating ground it will probably happen
in the middle of the element. This will not trip on a standard branch
circuit.
CB
|
284.179 | Over your rearend | OASS::RAMSEY_B | Put the wet stuff on the red stuff | Wed Feb 14 1990 10:11 | 6 |
| The caution to use an electrican is probably to legally cover the
manufacturer that they warned you to properly install a GFIC outdoor
outlet and recommending a "professional" to perform the work serves to
strengthen their position about offering the most likely correct way to
fix potential problems.
|
284.260 | Ground necessary for three light testers | DAVE::MITTON | Bo knows NETBIOS? | Tue Apr 17 1990 19:26 | 47 |
| I've done a number of outlet upgrades in two different houses,
experiencing several different wiring technologies....
- NOTE: If a 3 light tester only lights ONE light, then the outlet is
not grounded and the indication is not to be trusted.
You have to mentally dissect these testers to understand...
It's basicly three two prong testers;
[hot]---(green)---[neutral]
\ /
(green) (red)
\ /
[ground]
If there is no ground connected (eg: only the hot-neut green lights)
then you cannot detect a reversed hot-neutral situation (because
the neutral-gnd light cannot work.
When useing one of these on a two prong outlet, make sure that a
three prong adapter is used and another light comes on when you touch
the grounding lug to the cover screw.
This got me in my rental house, where the landlord has self upgraded
many outlets, didn't use grounds, and got them consistently WRONG.
I've since learned how to quickly use a two prong tester (they're
cheaper to buy when you cannot find your others)
- RE Testing for Ground:
I've seen false ground indications when a number of grounds are
connected to several outlets but not tied back to a real ground.
(eg: a floating ground circuit)
You have to be careful when testing to make sure all appliances are
unplugged. They might provide a ground path through themselves.
In my experience, a floating ground will show a "dim" indication on the
neon bulb. (this is easier to see on a two prong tester) As opposed
to the "bright" indication you will get from hot-to-neutral.
- BTW: when testing a three prong from the outside (or a two prong
polarized) the Hot prong is the smaller slot. The Neutral the larger.
Dave.
|
284.261 | Get a meter | AKOV12::ANDREWS | | Wed Apr 18 1990 15:04 | 24 |
| Not the absolute _best_ method, but much better than a neon bulb
that fires at who-knows-exactly-what voltage, is a meter.
If you can't easily physically trace each branch here's what to do:
Get a VOM with at least 5Kohms/volt on the AC scales. A Radio Shack
cheapie should work. With the meter on the 120 VAC scale, probe
between the grounded (large slot) and grounding (screw or U-ground slot).
There should be no measureable voltage.
With the meter still connected to the same two terminals, start
dropping the AC range down. Somewhere around the 0-3 volt scale
you should get a reading. It should _not_ be more than 0.25 to 0.3
volts AC to indicate a good ground continuity and a properly bonded
service panel. Remember, hot (black) goes to copper (the small
slot in the outlet); neutral, or grounded (sic) to white (the longer
slot). The green wire is called grounding (sic), if you have it and
it's either the screw or the roundish hole on the wiring device.
Remember, this method doesn't prove everything but can certainly help
you interpret results better than an idiot bulb.
Erick
|
284.262 | I have a floor lamp (and an oriental rug) in my office to counteract the dread fluorescents | CLOSET::DUM::T_PARMENTER | Right string, wrong yoyo | Fri Jun 08 1990 15:57 | 10 |
| This note has the right title, but the wrong end of the subject matter, so
bear with me.
The Digital Electricity Police are complaining about my incandescant lamp
being "non-grounded or not double insulated". How can I take a conventional
1930s, non-polarized household lamp and rewire it such that it will be either
grounded or double-insulated?
I have a feeling that they want to see a three-prong plug on there because
the ticket they issued complains of a "two-wire lamp".
|
284.263 | | QUARK::LIONEL | Free advice is worth every cent | Sun Jun 10 1990 21:36 | 7 |
| Re: .13
You can't in a manner that will satisfy the DEP. However you might
ask them if using a plug-in GFCI will satisfy their fears. (Probably
not.)
Steve
|
284.264 | Beyond reason? | NOTIME::SACKS | Gerald Sacks ZKO2-3/N30 DTN:381-2085 | Mon Jun 11 1990 10:08 | 4 |
| Do ungrounded appliances present a fire hazard, or are the DEC Elec cops
worried that Tom will electrocute himself? Are grounded lamps even *made*?
I bought a new floor lamp about 3 years ago, and it just had a polarized
plug.
|
284.265 | Sounds like someone is being to picky | REGENT::GETTYS | Bob Gettys N1BRM 235-8285 | Mon Jun 11 1990 10:39 | 7 |
| This sounds rather strange to me. I've been with DEC for
over 16 years and have had numerous lamps supplied to me by DEC
including the one now lighting my desk. NOT ONE OF THEM HAS BEEN
GROUNDED! As for double insulated - I can't tell. Most have had
at least part of the casing metal.
/s/ Bob
|
284.266 | | DICKNS::WELLCOME | Steve Wellcome (Maynard) | Mon Jun 11 1990 11:26 | 6 |
| You could get a 3-wire cord and plug and attach the ground wire
to the metal of the lamp body, I suppose...but like the others
have said, this seems pretty silly. I've got an incandescent
desk light here with a 2-wire cord, and nobody has ever complained
about it. I don't think any of my lights at home have 3-wire
cords.
|
284.267 | | QUARK::LIONEL | Free advice is worth every cent | Mon Jun 11 1990 12:18 | 12 |
| I believe that the "DEP" are insisting that certain OSHA rules be followed
for electrical devices in offices. I had them complain about the coffee
mug warmer plate I had (though I'd agree that this could indeed become a
fire hazard, that wasn't what troubled them.)
All of the appliances in my office, including the desk lamps, are grounded.
What I would suggest doing is asking what specific regulation needs to be
adhered to, and ask to take a look at it. You may be able to find a
solution.
Steve
|
284.268 | It never hurts to ask | CLOSET::DUM::T_PARMENTER | Greasy, salty, crunchy, sweet | Fri Jun 15 1990 09:53 | 9 |
| Steve, I followed your suggestion and asked what regulation they were applying.
They went back, studied up on it, and DECIDED TO CHANGE THE RULE!
They've determined that all I need to do is replace the plug with a polarized
plug and I'll be in compliance. So now my question is, which wire gets the
fat side of the plug and how do I identify it?
I'd rather do this in my office. I can borrow a VOM, if that's what I need,
but I've never used one before.
|
284.269 | | DICKNS::WELLCOME | Steve Wellcome (Maynard) | Fri Jun 15 1990 10:45 | 3 |
| You want the "hot" lead of the cord to be the center terminal of
the bulb socket. I don't know which prong of a polarized plug
is "hot", but you can figure that out with a VOM at the outlet.
|
284.270 | Narrow = hot | STAR::DZIEDZIC | | Fri Jun 15 1990 15:06 | 2 |
| Like a U.S. grounding plug, the narrow blade is "hot" and the
wide blade is "neutral".
|
284.271 | Here's the colors to connect | REGENT::MOZER | H.C.C. ;-) | Sat Jun 16 1990 10:17 | 10 |
|
FYI, here in the U.S.A. the wires are like this:
"Hot" = black = short blade slot
Neutral = white = long blade slot
Ground = green = "D" shaped slot
Joe
|
284.272 | Speaking of 3 prong standards... | NITMOI::PESENTI | Only messages can be dragged | Mon Jun 18 1990 09:05 | 8 |
| Is there a standard orientation for the outlet? Or maybe one called for by
the code?
It seems that all the outlets in my house are oriented so that any device that
has an angled plug (one that lets the cord be parallel to the wall instead of
perpendicular), gets plugged in with the cord going up the wall instead of
down (all except the outlet in by bedroom that I use for the ac... that goes
down... but of course that cord goes up to the ac!).
|
284.273 | | QUARK::LIONEL | Free advice is worth every cent | Mon Jun 18 1990 12:32 | 6 |
| Re: .23
The code doesn't, that I have seen, specify which way the outlet should
be aligned. I have always favored having the grounding pin on the bottom.
Steve
|
284.274 | RE: .23 Ground UP | MVDS01::LOCKRIDGE | | Mon Jun 18 1990 13:04 | 11 |
| RE: .23
I've heard (but cannot confirm) that it was code (at least for
commercial buildings) for the Ground hole to be up. Theory being that
if the plug isn't in all the way, if something is dropped across the
exposed plug, it would hit the ground lug first instead of shorting out
across Hot and Neutral.
I've noticed this to be true in just about any building I've gone into.
-Bob
|
284.275 | | QUARK::LIONEL | Free advice is worth every cent | Mon Jun 18 1990 14:31 | 3 |
| Guess I'll have to look it up when I get home...
Steve
|
284.276 | MRO4 has them lying on their side, in the modular office panels! | LYCEUM::CURTIS | Dick "Aristotle" Curtis | Mon Jun 18 1990 22:57 | 7 |
| .last several:
That may well be the case in commercial buildings, but I cannot
remember seeing the ground pin on top in any of the residences I have
been in (at least, not in the past 8 or 10 years...)
Dick
|
284.277 | I'll put ground down | KOOZEE::PAULHUS | Chris @ MLO6B-2/T13 dtn 223-6871 | Tue Jun 19 1990 11:57 | 7 |
| I would think that having the ground prong down would be most safe:
The plug tends to rotate downward due to gravity/cord weight. If the
ground were above the power prongs, you could lose ground and still
have power. If the ground were below, you would loose power before
losing ground. I think the plug tilting failure mode is a lot more
common than dropping stuff from above, landing on the exposed prongs.
- Chris
|
284.278 | | QUARK::LIONEL | Free advice is worth every cent | Tue Jun 19 1990 12:29 | 12 |
| I pored through my copy of the 1990 NEC last night, and found no reference
whatsoever as to the desired orientation of the outlet. It merely said that
the plug and outlet must be designed so that the ground connection was made
first and broken last.
However, I've been told that the Massachusetts code wants (but does not
require) the grounding pin to be on the bottom.
The question of which way it goes if the outlet is mounted sideways is
also of interest....
Steve
|
284.279 | ground should be on top | FREDW::MATTHES | half a bubble off plumb | Tue Jun 19 1990 13:54 | 15 |
| re: last couple
I've been told by a fairly reliable source that the ground plug was to
be up to meet mass code. It may not be code yet but inspectors
apparently feel it will.
The idea is that anything dropped on a loose plug will hit the ground
first and then short if it's flexible enough to hit both.
As far as the loose plug leaning out of the wall in .28, the ground
connector is long enough to maintain contact in the majority of cases
so that the ground is connection is made first and broken last as Steve
noted in the .29
I'll see if I can get more datail from this guy tonight.
|
284.280 | ex | CSCMA::LEMIEUX | | Tue Jun 19 1990 17:05 | 26 |
| How come 18 months ago? The Code changes come every 3 yrs with the
most current being Jan 1 1990.
I am not sure what the Mass. code requires and I can't look it
up right now because I don't have a current Mass. book, but I do know that
ground pin orientation is not mandated in the NEC. The only time
the pin orientation is shown in a consistent manner is on the
NEMA charts and drawings for wiring devices. Which shows the NEMA
5-15R and all of the U-ground type devices with the ground blade
up.
I suppose if you wanted to follow the code to the letter you
would have to install the device as shown in the drawings and prints.
The NEC covers this by requiring the listed or labeled equipment
to be installed in accordance with any instuctions included in the
listing or labeling. ARTICLE 110-3(b)of the 1990 NEC and previous
issues also. In 15 years I have not had an inspector even comment
on the orientation of the wiring device, and I have worked in
a variety of states, counties, boroughs etc around the country.
Just another electricians point of view :")
Regards,
PL
|
284.281 | Subtle, but made that way | DAVE::MITTON | MS-DOS: 50M sold, 15M per year | Tue Jun 19 1990 21:11 | 5 |
| It's been my observation that on most outlets if the manufacturer's
name or trademark is oriented to be read, that the ground socket
is down.
Dave.
|
284.282 | | BPOV04::RIDGE | Trouble w/you is the trouble w/me | Wed Jun 20 1990 13:13 | 11 |
| I have a sump pump whose plug orientation makes it awkward in an outlet
with the ground up. The wire leaving the plug is not parallel to the
floor, ie horizontal. The wire leaves the plug paralell to the wall. So
to put this in an outlet with the ground up, the wire would exit the
plug toward the ceiling. Doesn't feel right, and if there is an
appliance where you would want a correct ground it might be a
submersible sump pump.
Pump is about 6 years old, maybe the new ones are different.
Steve
|
284.283 | just the messenger | FREDW::MATTHES | half a bubble off plumb | Wed Jun 20 1990 13:35 | 12 |
|
I have the same types of plugs ... the cord goes up toward the ceiling.
What we are seeing here is a very disconcerted effort to establish a
standard where one does not exist by a few. Even though there is a
defacto standard with the opposite orientation i.e. the sump pump plug
and outlets with lettering assuming the ground plug is on the bottom.
I'm not agreeing with either orientation - only relaying what I heard
from a reasonably reliable source. This guy is a building manager type
who has had to deal with many mass inspectors as the buildings have
come on-line. er, office buildings that is.
|
284.284 | need a standard for the plugs, too | VIA::GLANTZ | Mike @ZKO, Nashua NH | Wed Jun 20 1990 13:39 | 7 |
| I'd like to see a standard if for no other reason than the one which
prompted this discussion: certain plugs end up pushing their wires up
the wall. Unfortunately, we have appliances with plugs that go both
ways, so even if I oriented all of our receptacles the same way, it
wouldn't solve the problem. I've actually re-oriented a couple of
receptacles (when it was convenient to) to make the wire run down to
the floor.
|
284.285 | | VMSDEV::HAMMOND | Charlie Hammond -- ZKO3-04/S23 -- dtn 381-2684 | Wed Jun 20 1990 15:47 | 20 |
| I have seen cords and/or extension cords for AIR CONDITIONERS
which indicate on the box or accompanying literature that they are
designed so that the cord angles UP from the outlet. (Reasonably
idea, since air conditioners are usually above the outlet!) These
plugs work when the ground prong is DOWN.
I believe that in general cords for home use either come straight
out or angle DOWN when the ground prong is down. On the other had
a partial survey here at ZKO3 found ALL plugs with the ground
prong UP, except for those in a horizontal orientation.
These horizontal plugs had the ground prong to the left. Obviously
this is so that a bare wire coming from the left will strike the
ground prong first. The conservative right would never do such a
ridiculous thing, but you can't trust the liberal left!
Seriously, this is the type of thing that causes people to loose
respect for the code -- or maybe for Massachusets. This is sad
because most of the rules contained in the NEC are important and
do work to make things safer.
|
284.286 | "Unconcerted" effort is right! | LYCEUM::CURTIS | Dick "Aristotle" Curtis | Wed Jun 20 1990 17:47 | 9 |
| All this reminds me of the VR290 I have in my office, which I inherited
with a line cord with a right-angled "jack" to connect to the VR290...
which made the cord run UP... (I eventually found a more suitable
replacement.)
Dick
P.S. Outlets in "real" walls here in MR4 have the ground pin on the
bottom, too (so that's one commercial building).
|
284.287 | | RAMBLR::MORONEY | How do you get this car out of second gear? | Wed Jun 20 1990 18:34 | 9 |
| As I mentioned elsewhere in this conference, many of the older outlets here
in the Mill are dual boxes, with 2 pairs of outlets. One of the duplex
outlets is installed with the ground pin up, the other, down, so you get to
pick and choose.
However, the new 'clean' power recepticles they recently installed have only
one duplex outlet (despite being a double box), with the ground pin up.
-Mike
|
284.288 | Look at GFI | FSHQA2::DWILLIAMS | But words are things | Thu Jun 21 1990 10:10 | 11 |
| Don't know about the GFI's in your homes but those in mine
all have the ground at the bottom. Since the GFI's are such that the
orientation of the outlet can't be changed, I suggest | |
.
is acceptable in MASS, whre I live, and is believed to be either the
most convenient arrangement, best arrangement, easiest arrangement from
the manufacturing/assembly persepctive of the manufacturer, or just the
way some IE designed them because they had to be designed.
Douglas
|
284.289 | | QUARK::LIONEL | Free advice is worth every cent | Thu Jun 21 1990 12:17 | 6 |
| Re: .40
Why can't you change the orientation of a GFI? Though they look the best
with the ground pin down, some are designed to look ok either way (or sideways).
Steve
|
284.290 | Upside writing is tough to read | FSHQA1::DWILLIAMS | But words are things | Fri Jun 22 1990 10:13 | 15 |
| Re: .41
<Why can't you change the orientation of a GFI? Though they look the best
<with the ground pin down, some are designed to look ok either way
Don't know about the GFI's in your home but those in mine:
. have writing on the top where the test button is (dictating
orientation to me - don't believe writing is suppose to
be upside down or on its side)
. have the outlet built in - the outlet can't, in and of itself,
be reorientated
Douglas
|
284.291 | Both ways sometimes | CSCMA::LEMIEUX | | Fri Jun 22 1990 13:03 | 5 |
|
Some GFI brands have the TEST and RESET written both ways so
that it does not matter which way you install it.
PL
|
284.292 | | NOTIME::SACKS | Gerald Sacks ZKO2-3/N30 DTN:381-2085 | Mon Jun 25 1990 14:12 | 1 |
| How many angels can dance on the head of a ground pin?
|
284.293 | | QUARK::LIONEL | Free advice is worth every cent | Mon Jun 25 1990 14:39 | 5 |
| Re: .44
None - The NEC requires permanent grounding for dance hall environments. :-)
Steve
|
284.330 | Which Bulb Brand Is Best? | TOPDOC::MACDOUGALL | | Thu Aug 16 1990 20:18 | 17 |
| Does anyone have information about brands of incandescent bulbs
which work best when the voltage is below 120 volts? We have re-
placed the outside wire, meter box, and installed new circuit breakers
inside the house. The electric company has checked their connections
and our ground without finding anything wrong. When they test the
voltage in the circuit breaker box, it is 117 or 118 volts - never 120
which is best for incandescent bulbs. Our lights appear a little dim
and have a yellowish glare throughout the house. Other neighbors have
the same problem but haven't complained to the electric company. Their
customer service representative said they have to supply customers with
at least 114 volts (it's a Massachusetts law) and they are complying.
We've used Sylvania and GE soft-white bulbs. We don't have dimmers
and can't switch to higher voltages. Any suggestions?
Mary
|
284.331 | | ESCROW::KILGORE | Wild Bill | Fri Aug 17 1990 09:31 | 4 |
|
Next higher wattage bulb?
Flourescent replacements?
|
284.332 | I like Philips bulbs | GOLF::BROUILLET | Undeveloped photographic memory | Fri Aug 17 1990 14:12 | 14 |
| > <<< Note 2915.35 by TOPDOC::MACDOUGALL >>>
> voltage in the circuit breaker box, it is 117 or 118 volts - never 120
> which is best for incandescent bulbs. Our lights appear a little dim
> and have a yellowish glare throughout the house.
I really doubt that you'd be able to notice a difference in light
intensity from the same bulb running at 2 or 3 volts higher. More
likely it's the type of bulbs you're using - are they "soft white"?
FWIW, I've had good luck with the brightness and longevity of Philips
light bulbs. And, BJ's Wholesale Club (Westboro MA, Salem NH, + several
other locations) carries them at very reasonable prices.
/Don
|
284.333 | Low is good for lights | PFSVAX::PETH | Critter kids | Fri Aug 17 1990 15:02 | 4 |
| Low voltage should ADD life to your bulbs, not blow them faster. I use
GE clear bulbs in most of my fixtures, I like the effect.
Sandy
|
284.334 | | RAMBLR::MORONEY | How do you get this car out of second gear? | Tue Aug 21 1990 00:51 | 10 |
| re .35:
117V-118V is "normal", not a problem. 120V is the high end of the normal
range, anything above 120V is considered excessive.
It is the nature of the beast for normal incandescent bulbs to be a little
yellowish. They do have halogen incandescents which are whiter, and, of
course, fluorescents.
-Mike
|
284.335 | some details on acv | REGENT::GETTYS | Bob Gettys N1BRM 235-8285 | Wed Aug 22 1990 11:18 | 9 |
| Actually the "nominal" line voltage has changed over the
years. It is now (at least in this part of the country) 120V +/-
5% which makes the normal range 114 to 126vac.
It's interesting looking at older appliances to find
that the nominal voltage has changed from 110 to 115 to 117 to
120 over the last 25 years.
/s/ Bob
|
284.120 | Wiring a switch to an outlet (plug) | VMSSPT::SCOTT | | Mon Jul 01 1991 13:30 | 38 |
|
I am wiring 2 new bedrooms in a basement. The rooms are framed
and next comes the drywall...
Instead of installing a light on the ceiling I decided to wire a
receptical (outlet/plug) to a light switch. Just like a lot of
new houses use an outlet to plug a lamp into which is controlled
by a wall switch.
Typically new houses have the top part of the duplex outlet connected
to the wall switch and the bottom part of the outlet continously
live. I decided to dedicate one duplex outlet to the switch, hoping
that wiring it would be easier.
I tried a couple variations and haven't had any luck. At the moment
I have the power source coming in to the outlet. I would rather keep
it that way, but if I have to bring it into the switch I can drill
a couple more holes in the 2x4's....;'((((
Do I need to you 12-3 wire ???
Can someone complete the following diagram, with labeled wires please:
Outlet switch
Power source
|
V ___
/ \ _____
______________ | O | | |
B -------------- \ / | | |
/ \ | | |
______________ | O | | |
W ______________ \___/ -----
|
284.121 | | STAR::DZIEDZIC | | Mon Jul 01 1991 13:58 | 21 |
| 2-conductor wire is sufficient.
Run a length of xx-2 wire from outlet box to switch box. Connect
the WHITE wire from SOURCE to the WHITE terminal on outlet.
Connect the BLACK wire from SOURCE to the WHITE wire leading to
the switch box. Mark this white wire, either with a black or blue
magic marker, or a strip of electrical tape, to indicate it is an
"identified" conductor. Connect the BLACK wire leading from the
switch box to the BLACK terminal on outlet.
At the switch, connect the two wires to the switch terminals (either
wire to either terminal). Mark the WHITE wire as noted above.
Tie the bare grounding wires together at the outlet and connect to
the green screw (use a "greenie" or some similar type of wire nut
so you only have ONE bare wire under the green screw). Connect the
single bare grounding wire at the switch to the green screw. (If
you are using metal boxes you'll have to also run a jumper from the
bare grounding wires to the metal box.)
|
284.122 | Controlling Receptacles with a Switch | CHIEFF::STLAURENT | | Mon Jul 01 1991 14:18 | 26 |
| What you need to do is run 14/2 from the receptacle box to the switch.
At the receptacle tie the black wire (power feed) to the white 14 GA going
to the switch. Connect the white wire (power return) to the silver screw
on the receptacle. The 14 GA black wire heading to the switch gets
connected to the brass screw on the receptacle. Connect the black wire
at the switch end to one screw and the white wire to the other. The ground
wire (bare copper) is tied to the green screw at the switch and connected
the receptacle end to the all the other ground wires at the receptacle box.
This will severely limit the layout of the room I'd go for wiring the
top half of all the receptacles. All the different is you run 14/3 and
break the little shorting bar connecting the 2 brass screws together.
Top screw gets the red wire and the bottom one gets the black. Switch
the power to red wires at the receptacle box closed to the switch. The
receptacle box size will have to accommodate 13 or 14 wires depending if
its metal or plastic 3/red, 3/black, 3/white, 3or4/ground and
1/receptacl.
See if this makes any sense, Sorry about the box size but it's been
awhile. I know the plastic boxes have the numbers stamped right on them
something like 12/7 14/10 first number=(wire gage), second number =
(max. num. of connections).
Good luck and please get your work inspected.
/Jim
|
284.123 | | VERGA::WELLCOME | Steve Wellcome (Maynard) | Mon Jul 01 1991 16:11 | 8 |
| Slight divergence here from the original question, but in reference
to .2's idea about wiring each outlet of a duplex receptacle on a
separate circuit, it occurred to me the other day that one would
therefore have to switch *two* circuit breakers to kill the power
to a given outlet. No problem as long as one knows about it, but
it could be a nasty surprise to somebody who didn't know...plug in
light, flip circuit breakers until it goes out, begin to take outlet
apart...ZAP!
|
284.124 | | CIMNET::LUNGER | H 2... ��WHOA!! | Tue Jul 02 1991 09:29 | 12 |
| Just an addition to the slight divergence that may be obvious,
but should be mentioned: A good way to have the top
outlet in your duplex receptables switched, and the lower ones
hot is to bring 2-wire romex to your switch from the breaker panel.
From there run 3-wire in series to all your outlets. At the switch box,
connect 2-w. black to 3-wire black *and* the switch. On the other side
of the switch connect the 3-wire red. Connect 2-wire white to 3-wire white.
At each outlet, use red for the top outlet, and black for the bottom.
Thus, avoiding the problem of .-1. Only one circuit is thus used, and
killing the power leaves no boxes with any hot wires.
|
284.131 | Wiring European-style 230V receptacles | ASDG::NOORLAG | Date Noorlag , HLO2-3/J9 , dtn 225-4565 | Tue Jul 02 1991 13:30 | 40 |
| I recently relocated from Europe (i.e. the Netherlands), and brought European
electrical equipment with me. The part of Europe I'm from has single-phase
230V /50Hz as standard service, and three-phase 380V /50Hz as power service.
I also brought a number of 120V/240V step-up transformers that enable me to run
my 230V equipment from standard 120V outlets. Fortunately, most of my equipment
doesn't mind the 60Hz, nor the 230V-240V difference.
The transformers do the job well, but are a bit awkward. They are heavy and
noisy, and of course only provide 240V service where they are located.
The home I bought has two-phase 240V /60Hz service (i.e. 120V on either side of
neutral).
Now the first question:
In order to get rid of the step-up transformers, I like to wire up some
European-style electrical outlets using the 240V service. Is there a way
I can do that without violating the NEC?
The equipment I'm talking about is a vacuum cleaner, a stereo, a home
computer, etc., so not really stuff that takes a lot of electrical power.
European 230V outlets are totally different from their U.S. 120V counterparts,
so there is no way somebody could accidentally plug in a 120V appliance in
a 230V outlet, or vice versa.
Second question:
I also brought a European 230V washer and dryer. I can't run these appliances
from a step-up transformer because they take too much power. Both washer and
dryer take about 3200W.
I have hooked up the washer and dryer as follows. I have connected a main
switch to the dryer outlet in the laundry room. The main switch has 30A fuses
in both hot wires, and controls both the washer and the dryer. The circuit
breaker in the panel that controls the dryer outlet is also 30A.
Even if they are working at the same time, the washer and dryer together
don't take 30A (although they get close). So, overload is no problem.
Is this situation OK, as far as the NEC is concerned?
Your feedback is much appreciated!
Date
|
284.132 | Use standard US hardware. | JVAX::JOHNSON | | Tue Jul 02 1991 15:17 | 17 |
| Since you are now in the US, forget the European receptacles. They
will be hard to find and useless to anyone else. There are standard
US (NEMA type 6-15R) receptacles and plugs (6-15P) rated 15 amps
250 (ok for 240) volts, which are available in any hardware store.
Installed on two pole breakers with normal US wiring techniques
they meet all code requirements. You can even using existing wiring
if you change all receptacles and the breaker on that particular
circuit (be sure you get *ALL* receptacles). If you are unconfortable
with this work, I suggest an electrician.
Your washer outlet is a code violation. A 15 amp circuit needs to
be protected with 15 or 20 amp overcurrent protection. You might
be able to feed both from the wiring to your dryer, provided the
connected rated load does not exceed the 30 amps. The washer however
would need to be fed through a small box with a 240 volt two pole
15 amp breaker.
|
284.133 | Why is my washer outlet a code violation? | ASDG::NOORLAG | Date Noorlag , HLO2-3/J9 , dtn 225-4565 | Tue Jul 02 1991 16:59 | 12 |
| I'm not sure I understand exactly *why* my washer outlet is a code violating?
If my washer outlet violates code, then I guess my dryer outlet is also a
code violation, since bother washer and dryer both run from the main switch,
and are both protected by one pair of 30 amp fuses?
Does the NEC say that *every* connected 240V appliance needs to have its own
two-pole circuit breaker?
I guess what I have to do is installing a subpanel in the laundry that is fed
from the dryer outlet, and has two two-pole 15 or 20 amp circuit breakers.
Date
|
284.134 | Overcurrent protection | JVAX::JOHNSON | | Wed Jul 03 1991 14:11 | 8 |
| The code problems would be clauses 210-20 and 210-21 in the national
electric code, requiring the receptacles and wiring to have ampere
ratings not less than that of the branch circuit. In this case,
with a 30 amp circuit, I suspect you are not using receptacles and
flexible cord to the washer rated 30 amps (unlike the dryer). If you
are using 15 or 20 amp receptacles you must protect them at no more
than 20 amps. The 30 amp circuit will also do a poor job of
protecting the washer against motor overloads or burnouts.
|
284.135 | Washer and dryer are directly wired to the main switch | ASDG::NOORLAG | Date Noorlag , HLO2-3/J9 , dtn 225-4565 | Wed Jul 03 1991 15:46 | 13 |
| I have wired the washer and dryer directly to the main switch. The flexible
cord I've used is rated at 16 amps. Both washer and dryer have internal 16 amp
fuses to protect them against overload. I have no receptacles wired from the
main switch.
I see your point. I will replace the main switch with a subpanel, and wire
the washer and dryer to 15 amp circuit breakers. I will feed the subpanel
from the dryer outlet using a standard dryer cable. I guess then I'm OK as
far as the NEC is concerned.
Thanks a lot for your response! Very helpful!
Date
|
284.136 | some experience to relate | ENABLE::GLANTZ | Mike 227-4299 DECtp TAY Littleton MA | Wed Jul 03 1991 17:15 | 23 |
| We've added several 240V 20A circuits to our house wiring (in kitchen,
living room and family room) exactly for plugging in European
appliances. We used standard 20A 2-hot-plus-gnd NEMA receptacles (no
neutral), and wired the circuits with 12-2+gnd. This is all strictly
to code, and works fine. Using the NEMA 4-pin receptacle would've
provided the extra flexibility to use those sockets for 120V
appliances, as well, but I didn't think that was necessary, and
would've cost the price of 12-3+gnd.
Now, so as not to have to replace the European plugs on the
appliances, a bit of foresight was necessary: before we left Europe,
we bought several heavy-duty extension socket strips. I replaced the
plugs on those with the NEMA plugs and everything's fine. We run hifi,
kitchen appliances, sewing machines, u-name-it. All the appliances are
fine on 60Hz (and, in fact, are so rated). And, of course, we have the
benefit of more than one socket available at each outlet.
The only bad part was that these circuits (3 of them) each take up two
poles on the service panel. We're flat out of slots on our 100A panel,
and have even had to use a couple of slim-line breakers, too. Perhaps
a sub-panel would have been a good idea, but I just dislike sub-panels
for some reason. The better (and more $$) solution would be to upgrade
to a nice big 200A panel.
|
284.137 | Wiring extra 240V 20A circuits | ASDG::NOORLAG | Date Noorlag , HLO2-3/J9 , dtn 225-4565 | Wed Jul 03 1991 18:31 | 23 |
| Re: 5
I think wiring extra 240V 20A circuits is a good idea. I brought European
240V receptacles for this purpose, but I think I will use the NEMA receptacles
instead, so everything will be according to code. One could argue that the
European receptacles are safer (they are recessed, so one cannot touch live
wires when plugging in appliances), but I rather have my installation according
to the NEC.
You're right about the extension strips! I brought some as well, and I wouldn't
know what to do without them!
Since at the time I didn't know where I would be living in the U.S.,
I shipped 120V/240V step-up transformers when I left Europe. (Originally those
were 240V/120V step-down transformers to run U.S. appliances in Europe. I
converted them into step-up transformers). The home I bought has a fat 200A
two-phase 120V service, so wiring the extra 240V circuits should be no
problem, and an excellent way to run my European appliances!
About the 60Hz: most European equipment doesn't the 60Hz. However, I made the
mistake of shipping European clock radio's. The radio part of it works fine,
but the clock is 20% fast! Probably the best use is to get rid of boring guests:
"gee, time really flies!".
|
284.182 | Change 2 prong to 3 prong outlets
| NODEX::BRASS | | Thu Oct 24 1991 10:21 | 9 |
| Hi,
I have a condo and all the outlets have two prongs, no ground prongs.
The place is pretty old maybe 30 years, I do not know if the wiring has
ever been touched. I would like to put in the three prong outlets, because I
hate using adapters all the time. In a two prong outlet, what do they do with
the ground? groud to the box? and do I just have to put the new outlet in
and connect the ground to the outlet? Any help would be apreciated.
Thanks
Bob
|
284.183 | | CSC32::S_MAUFE | gotta get a new personal name | Thu Oct 24 1991 11:58 | 8 |
|
some parts of my house are the same, and the generally there isn't even
a ground wire!
so when I turn my attention to redoing the sockets I'm going to need to
re-run new cable. Conduit? whats a conduit? 8-{
simon
|
284.184 | | QUARK::LIONEL | Free advice is worth every cent | Thu Oct 24 1991 12:07 | 4 |
| Notes 1980 and 2412 have lots of replies on this subject. I'm sure the
moderators will tell you so shortly.
Steve
|
284.185 | gfi | ZEKE::HANEY | | Mon Dec 09 1991 08:28 | 1 |
| use gfi outlet
|
284.211 | Do power strips have to be on to protect? | CADSYS::GIL_PASSOLAS | Diana | Tue Apr 07 1992 11:06 | 10 |
| I have a question about the power strips with surge protection that you
can buy for $15.00-20.00. Do those strips have to be turned on (some
have an on/off switch on the strip) in order for the components plugged
into the strip to be protected against a sudden voltage surge? Or, is
the surge protection there for components plugged into the strip even
when the strip is turned off?
Thanks.
Diana
|
284.212 | | QUARK::LIONEL | Free advice is worth every cent | Tue Apr 07 1992 12:39 | 7 |
| Most of those strips just have one MOV across the hot and neutral lines. The
on-off switch isolates the hot line, so I suppose the answer is that there is
no less protection with the switch off than there is with the switch on.
Either way the equipment could get zapped by a spike between neutral and
ground.
Steve
|
284.138 | elec. outlet install question | ISLNDS::SCHWABE | | Tue Aug 11 1992 14:59 | 21 |
|
I'd like to install an electrical outlet in a bedroom on a
wall that separates the room from the bathroom. On the opposite
side of the wall is the back wall of the tub.
Does anyone know if there are any code restrictions in Mass.
that do not allow an outlet to be placed between this type
of wall?
Bathroom
tub
=================== wall
|
outlet
bedroom
|
284.139 | | RGB::SEILER | Larry Seiler | Tue Aug 11 1992 16:11 | 6 |
| I don't believe there is any code restriction on what can be on the
opposite side of a wall that contains an electrical outlet. It's
worth checking to see if there are pipes in the way, of course.
Enjoy,
Larry
|
284.140 | | WLDBIL::KILGORE | ...57 channels, and nothin' on... | Wed Aug 12 1992 12:01 | 3 |
|
In fact, I have one just as you describe.
|
284.294 | Explosion Proof Receptacle | MPGS::KOZAK | | Thu Oct 15 1992 16:41 | 33 |
| Explosive Proof Socket?
I have just had a brick walk put in. Toadd a bit of flair, we had a
fieldstone wall built in the middle of the walk. The brick walk splits
apart, goes around the wall (shaped like a diamond), and then meets again
and continues to the end where it stops at the entrance to the gazebo.
Before doing all the brick work, we did the wiring for lights,
receptacles, sprinklers, etc. We have 2 wires for lights, and one for a
receptacle inside of the wall. We have yet to add lights or
receptacles.
The question is, is it possible to bury the receptacle (outdoor one of
course), and when needed, move a little dirt to get to the it?
Is it acceptable to use an explosion proof receptacle, and bury that in
the ground, if a standard GFI outdoor receptacle is not OK?
I would like to get away with the standard outdoor GFI receptacle for 2
reasons:
1. Cost. An explosion proof receptacle is 6-8 times the cost of the
outdoor receptacle.
2. Size. An explosion proof receptacle is about 4 times the size of
the GFI receptacle.
Comments are welcomed.
Rgds,
Andy
|
284.295 | Explosion proof .....Probably not the way to go.. | SPEZKO::LEMIEUX | | Fri Oct 16 1992 10:22 | 47 |
|
The question is, is it possible to bury the receptacle (outdoor one of
course), and when needed, move a little dirt to get to the it?
>> Is it acceptable to use an explosion proof receptacle, and bury that in
>> the ground, if a standard GFI outdoor receptacle is not OK?
Regardless of whatever method you use to mount or contain the receptacle
it will still have to be protected by a GFI device of some sort. If it
is for general use outside of a residence.
Explosion proof devices are not necessarily designed for direct
burial or for that matter wet locations. Investigate the particular
product thoroughly before simply deciding to use explosion proof
items in that environment. (BTW there is more than one class of
explosion proof devices class 1, 2, 3 all are designed differently)
>> I would like to get away with the standard outdoor GFI receptacle for 2
>> reasons:
>> 1. Cost. An explosion proof receptacle is 6-8 times the cost of the
>> outdoor receptacle.
>> 2. Size. An explosion proof receptacle is about 4 times the size of
>> the GFI receptacle.
>> Comments are welcomed.
Try this:
Buy a PVC hand-hole like the type used for sprinkler
systems and utility power connections. They come in diff. sizes.
Mount a standard wet location box & receptacle cover in it and when you
need the receptacle you just pop the cover off of the hand hole and
use the receptacle. I've seen the hand holes at Builders Square.
I would protect the line with a GFI device located inside
out of the weather. They just don't do well outside in the damp. You
could use a breaker(expensive) or an in-line GFI(cheaper) receptacle
mounted somewhere in the circuit inside where its dry.
Of course be sure that the location you install this does
not allow the hand hole to fill up with water and submerse the
receptacle.
|
284.141 | switched-unswitched elec. outlets | VAXWRK::OXENBERG | illigitimus non conderendum es | Tue Jan 12 1993 10:10 | 8 |
|
We have several electric outlets that are controlled by an equal
number of wall switches thoughout our house. Unfortunately, each
switch controls both outlets (of an outlet pair). How do I unswitch
one outlet of a pair?
Thanks
-Phil
|
284.142 | | JUPITR::HILDEBRANT | I'm the NRA | Tue Jan 12 1993 10:25 | 7 |
| RE: .0
Remove the little jumper wire that connects the outlets together. Then,
wire the open outlet to your new unswitched line.
Marc H.
|
284.143 | | VAXWRK::OXENBERG | illigitimus non conderendum es | Tue Jan 12 1993 10:45 | 11 |
|
> Remove the little jumper wire that connects the outlets together. Then,
sounds simple
> wire the open outlet to your new unswitched line.
there are other outlets in the room that are unswitched.
I could wire the open outlet to that line?
When I expose the switched outlet, will the other unswitched line be visible?
-Phil
|
284.144 | | QUARK::LIONEL | Free advice is worth every cent | Tue Jan 12 1993 11:46 | 15 |
| Whether or not you can do this depends on how the outlet is wired. If the
unswitched feed comes into the outlet box, and the hot lead goes off to the
switch and comes back to connect to the outlet, then you can break the
jumper lug on the hot side and hook it up to the hot feed. But if it's
like most cases where the feed comes into the switch and only the switched
feed goes to the outlet, it's much harder. I don't think you can "legally"
hook one part of the outlet to one circuit and another part to another
circuit. I'm even doubtful that you can run a feed from another outlet on
the SAME circuit and hook up only one half of the outlet; at the least, you
wouldn't be allowed to hook the grounds together, I don't think.
If you're lucky, the hot feed comes into the outlet box, and it's easy.
Otherwise, you're probably out of luck.
Steve
|
284.145 | | JUPITR::HILDEBRANT | I'm the NRA | Tue Jan 12 1993 13:16 | 6 |
| RE:
.3
It can be done legally. No problem.Why couldn't it?
Marc H.
|
284.146 | | QUARK::LIONEL | Free advice is worth every cent | Tue Jan 12 1993 14:48 | 3 |
| I'd be concerned about ground loops and varying potentials between circuits.
Steve
|
284.147 | sw/unsw comes in handy | GOLF::BROUILLET | | Wed Jan 13 1993 09:12 | 15 |
| > <<< Note 4839.3 by QUARK::LIONEL "Free advice is worth every cent" >>>
>I'm even doubtful that you can run a feed from another outlet on
>the SAME circuit and hook up only one half of the outlet; at the least, you
>wouldn't be allowed to hook the grounds together, I don't think.
Sure you can (at least in MA). I have two rooms (family room and
living room) wired like this, to make it easier to switch endtable
lamps as you enter and leave the room. The electrician who wired my
house recommended this. Nothing worse than fumbling around in the
dark, tripping over the kids toys, trying to get to the switch on the
light. The inspector just checked it all out last night, was happy,
and signed off the permit.
/Don
|
284.148 | | QUARK::LIONEL | Free advice is worth every cent | Wed Jan 13 1993 09:56 | 8 |
| I didn't say you couldn't have half switched, half unswitched. I wondered
about having the two portions on separate circuits. Imagine your surprise
when you throw a breaker, the lamp goes out, but the other half is still
hot and you get a jolt.
This is perhaps just my paranoia....
Steve
|
284.149 | | JUPITR::HILDEBRANT | I'm the NRA | Wed Jan 13 1993 10:02 | 13 |
| RE: .7
I think you are overly concerned Steve. Sure, it can happen,but
then again if a DIY'er thought about what "could" happen, he/she
wouldn't.
I would strongly recommend, though, that the same circuit that feeds
the switched side, should also feed the un-switched.
I have many in my house wired this way. Works great in a bedroom
to have the light on the switched and the clock on the un-switched.
Marc H.
|
284.150 | always try to minimize surprises | GOLF::BROUILLET | | Wed Jan 13 1993 12:44 | 2 |
| RE .7, yes, you have a point. Mine are on the same circuit. Don't
know if that's a requirement, but it does sound like a good idea.
|
284.151 | | SOLVIT::TOMMYB::BERKNER | Wonderful person. | Thu Jan 14 1993 09:19 | 9 |
| When I built my house, I wanted to wire the outlets in the kitchen with the
top and bottom halves on separate circuits to help prevent overloading. The
inspector recommended I do this but he required that the circuit breakers be
tied together so they would both be tripped at the same time. Since I decided
to only run one neutral for both circuits, the two circuits had to be taken
from diferent poles. All of the above was accomplished by using a normal
240v breaker.
Tom
|
284.152 | | JUPITR::HILDEBRANT | I'm the NRA | Thu Jan 14 1993 14:15 | 7 |
| RE: .10
With 20 amp lines, what are you pluging in that takes that much?
Just curious
Marc H.
|
284.153 | | SOLVIT::TOMMYB::BERKNER | Wonderful person. | Thu Jan 14 1993 15:02 | 7 |
| 4 slice toaster,
Electric griddle
Coffee Pot
Microwave
That is probably the max load at breakfast.
|
284.154 | 20 is the rules (as I recall) | EVETPU::MCCARTHY | but I kept rolling off the couch | Fri Jan 15 1993 07:13 | 7 |
| I belive the code requries all Kitchen recepticals to be 20A. Its been that
way for several years. I'm not sure if they changed the code to require all to
be GFI'ed (they were thinking about it) but last I knew it was within 6' of
sink/water (excluding dishwasher, but that is usually right next to a sink
anyway).
bjm
|
284.155 | Circuit must be 20A not the outlets. | HDLITE::FLEURY | | Fri Jan 15 1993 07:37 | 7 |
| RE: .-1
Code requires that the CIRCUIT be 20A. Within 6' of the sink the
outlets should be GFI protected as well. Typically, you will see
either a 20A GFI breaker for the kitchen or individual GFI outlets.
Dan
|
284.156 | | QUARK::LIONEL | Free advice is worth every cent | Fri Jan 15 1993 09:10 | 6 |
| Code also requires: No more than 48 inches between outlets on a continuous
stretch of counter, at least two "small appliance" circuits that serve
counters with nothing else on them except a clock. A microwave ought to be
on its own circuit.
Steve
|
284.157 | | VMSDEV::HAMMOND | Charlie Hammond -- ZKO3-04/S23 -- dtn 381-2684 | Mon Jan 18 1993 15:01 | 18 |
| > ...at least two "small appliance" circuits that serve
> counters with nothing else on them except a clock.
According to my understanding, the circuit described in .10 meets
this requirement for "two small appliance" circuits. Again,
according to my understanding a "small alliance" circuit is just a
20A circuit that feeds nothing except outlets. (Maybe a clock is
an exception.)
> A microwave ought to be on its own circuit.
An interesting comment. There are certainly an awfully lot of
microwave ovens plugged into shared circuits in kitchens all over
America and probably beyond. Certainly built-in units should have
their own circuit. Its hard for me to see that this would be
necessary form smaller, counter-top units. The larger size counter
top units may be a gray area. The way they're sold it ic clear
that they will be used on shared circuits.
|
284.158 | microwave on lighting circuit | FREBRD::POEGEL | Garry Poegel | Mon Jan 18 1993 16:39 | 16 |
|
> A microwave ought to be on its own circuit.
I would think so too or at least on the 20 amp small apliance
circuit. I just finished installing a over-the-stove
unit. I took out the existing light/fan and used the line that
it was on. When trying to determine which circuit that it was
connected to, I found out that it was on the "1st floor overhead
lighting" circuit. On that circuit is also the stove (Gas).
It should be sufficient since, there's only a bunch of 60 watt
bulbs for all the overhead lights.
Garry
|
284.159 | | QUARK::LIONEL | Free advice is worth every cent | Tue Jan 19 1993 11:22 | 6 |
| The instructions that came with my full-size microwave said that it should be
on its own circuit. In my view, any appliance that is used in a fixed location
and draws over 10 amps should be on its own circuit. But I realize that most
people plug microwaves into shared circuits.
Steve
|
284.160 | | PATE::MACNEAL | ruck `n' roll | Tue Jan 19 1993 15:42 | 5 |
| Technically my microwave is not on it's own circuit since due to space
(or lack thereof) my toaster plugs into the same outlet.
In practice it is on it's own circuit since the toaster and microwave
will not operate at the same time.
|
284.186 | Outlet from hell | 58323::PJOHNSON | | Fri Jul 09 1993 15:51 | 15 |
| OK, home electricians. I'm stumped!
I have had a pool filter plugged in to an outlet that I installed, no
problems at all for years, until this morning. I checked the outlet
and I have 110v on the correct wire, everything's connected per stds,
but the filter won't run.
However, the filter will run if I plug it into an extension cord! The
main differences that I know of are (1) the extension cord doesn't
have a proper ground, and (2) the outlet I installed is downstream
from a GRCI plug.
Any ideas on how to TS this?
Pete
|
284.187 | | QUARK::LIONEL | Free advice is worth every cent | Fri Jul 09 1993 16:31 | 5 |
| The plug is likely not making contact with the conductors in the outlet -
you may want to try replacing the outlet with one of a "higher grade" to
see if that helps.
Steve
|
284.188 | try this | CSDNET::DICASTRO | jet ski jockey | Fri Jul 09 1993 17:41 | 3 |
|
why dont you "reset" the gfci plug...
|
284.189 | Problem solved | 58323::PJOHNSON | | Sat Jul 10 1993 15:58 | 8 |
| I traced problems all the way back to the GFCI outlet, so I replaced
*it* and now all's well.
Not much of a safety device, IMO, if it can fail shut, that is,
leaving 100v supplied downstream. I have never liked them anyway.
Pete
|
284.190 | I had a GFI fail shut as well.. hmm.. | TEKVAX::KOPEC | Free Stupidity Screening $5 | Mon Jul 12 1993 08:39 | 8 |
| Hm. Interesting. When we bought the house we're living in now (about 2
years ago) I noticed that there was some black staining around the edge
of the wallplate of one of the kitchen GFI's; plugged my GFI tester in
and sure enough it had failed closed. Took it apart after I replaced it
and it was a huge mess inside; I don't know what happened to it but it
sure must have been exciting..
...tom
|
284.191 | | QUARK::LIONEL | Free advice is worth every cent | Mon Jul 12 1993 10:44 | 5 |
| GFIs can and do fail, which is why you are supposed to test them monthly
(but almost no one does.) (You're also supposed to flip circuit breakers
off and on yearly, as they too can "fail shut".)
Steve
|
284.192 | It's just an expensive outlet... | 58323::PJOHNSON | | Mon Jul 12 1993 17:11 | 10 |
| So what test should be done? To see if the the 'test' button causes
the 'reset' button to pop out? Or to see if the 'reset' button stays
in when depressed after having popped out? What does any of this tell
you?
The evidence leads me to believe that these things don't work as
advertised and might lead to dangerous complacency. I think it's all a
crock, same as lightbulb life reduction.
Pete
|
284.193 | test with GFCI tester... | COAL05::WHITMAN | Acid Rain Burns my Bass | Mon Jul 12 1993 18:52 | 10 |
| <So what test should be done? To see if the the 'test' button causes
<the 'reset' button to pop out? Or to see if the 'reset' button stays
<in when depressed after having popped out? What does any of this tell
<you?
Go to your favorite hardware store & spend $25 on a GFI tester. This little
gadget allows 5ma leak across the appropriate leads (hot??? to ground???) and
should cause the GFI breaker to trip... If it don't trip, then it's broke.....
Al
|
284.194 | They work....but you have to follow the instructions | SPEZKO::LEMIEUX | | Tue Jul 13 1993 09:15 | 19 |
|
GFCI's when used in accordance with the manufacturers instructions save lives.
The instructions say you have to test them every so often. If you don't do the
test then you leave yourself wide open to the situation you recently had.
Just like the previous noter mentioned, you can buy a tool to test them or you
can use the little button on the GFCI device itself. They both do the same thing.
re back a couple of replies: That GFCI that was smoked, probable cause was some
kind of surge induced on the line. Most likely one of the following; lightning,
wind damage to the powerlines, car hitting a pole somewhere etc. GFCI receptacles
for whatever reason don't handle these impulses too well. The small impulses will
trip them the big ones smoke'em and at the same time nothing else in the house
seems affected. I replace a lot of them this time of the year.
(I suspect it won't be too many years into the future when the NEC requires that
all branch circuits for lighting and convenience outlets in residences are
required to be protected by GFCI.)
|
284.195 | | 58323::PJOHNSON | | Tue Jul 13 1993 12:55 | 4 |
| My point is that I did test it, repeatedly, and it seemed to pass. It
seems as if such a device should be designed to fail open, not shut.
Pete
|
284.196 | that is why the instructions say "TEST EVERY MONTH" | 20438::MCCARTHY | COMPUTER: end simulation | Tue Jul 13 1993 13:30 | 7 |
| >>My point is that I did test it, repeatedly, and it seemed to pass. It
>>seems as if such a device should be designed to fail open, not shut.
They are designed to fail open, but if a short takes place they may be stuck
shut - that is why they say they should be tested monthly.
bjm
|
284.197 | | PASTA::SEILER | Larry Seiler | Wed Jul 14 1993 18:09 | 3 |
| In other words, they should be tested monthly, but the "test" button isn't
a sufficient test, since it doesn't show whether they are shorted open.
Right?
|
284.198 | | QUARK::LIONEL | Free advice is worth every cent | Wed Jul 14 1993 20:44 | 6 |
| You are supposed to plug a light or something into the outlet, push
the button, and see if the light goes out. If you have one of the
special testers, you can try it in any outlet that is "downline"
from the GFI to make sure that the protection extends.
Steve
|
284.161 | Plastic vs. Metal [electrical] outlet boxes | NETRIX::michaud | Jeff Michaud, PATHWORKS for Windows NT | Thu Dec 30 1993 13:08 | 9 |
| I've been doing a little bit of new wiring and have been
using the blue plastic boxes due to their extremely low
price. While watching a recent episode of "This Old House"
however I noticed the new wiring in the kitchen and the
outlet boxes were the more expensive metal ones.
Are there code requirements that dictate what can be used?
I'm assuming they wouldn't be selling the plastic boxes if
they didn't meet code???
|
284.162 | code says use either; choice is yours | HELIX::LUNGER | | Thu Dec 30 1993 14:06 | 6 |
| note 1768 discusses the issue.
my own preference is for metal because i want the circuit to trip if
some wire comes loose inside the box. i just did an addition with
6 new circuits... all with metal boxes.
|
284.163 | | NETRIX::michaud | Jeff Michaud, PATHWORKS for Windows NT | Thu Dec 30 1993 16:10 | 4 |
| > note 1768 discusses the issue.
Thanks! I searched on a couple of keys but somehow missed
the existing topic!
|
284.64 | More dead outklets | ICS::KAHANE | | Sun Jan 16 1994 19:58 | 10 |
| Trying to daignose how I killed 2 live outlets.
In kitchen, plugged in heater to warm frozen pipes, then moved heater
to next outlet along counter. Suddenly a dead outlet--in fact 1st one
eas now dead. Heater worked fine on another circuit.
Everything elase on circuit was OK--refrig., light, no blown fuses.
So I replaced both receptacles to no avail--still dead. All is
side-wired, no GFCI. Any thoughts about where problem lies?
Thanks, Ernie
|
284.65 | You should use a voltmeter... | STRATA::CASSIDY | | Mon Jan 17 1994 00:53 | 7 |
| > side-wired, no GFCI. Any thoughts about where problem lies?
> Thanks, Ernie
The junction box is probably in the ceiling light fixture box.
You should use a meter to see if you are getting power there.
Tim
|
284.66 | stranger things have been done | WMODEV::MARTEL_B | | Mon Jan 17 1994 13:19 | 8 |
|
My brother had a similar problem at his house. turned out that
outlet was wired into his second floor bathrooms GFI outlet... just
pressing the reset button fixed everything.
hope its that simple for you.
-Brian
|
284.125 | how to add a receptacle off a light switch | ICS::STUART | Boston Red Sox, 1994 World Champions | Mon Jul 11 1994 12:10 | 42 |
|
The answer to this may be in here but it's probably an easy one so I'll
just take a shot at it in this topic.....
I attempted to add a receptacle next to a workbench in my garage. I figured
I'd get the power from the double switch that controls the garage and basement
lights.
One switch operates the garage lights and is connected to another switch
at the other end of the garage. I used this switch. The other switch operates
the basement lights and is connected to another switch at the top of the
stairs. Both switchs have 12-3 wires connecting them.... Black, White, Red.
1st attempt.... (I used 14-2 wire to the receptacle, ~ 3 foot run)
I connected the white wire to the white switch post and the black wire to
the black switch post and twisted the ground wires together.
result...
When the switch is on, I get a dull glow from the receptacle on my tester
but not enough juice to light my work light.
When the switch is off, my work light will light but there is a dull glow
in the garage lights. If I turn off my work light the garage lights go out !
(Boy did I take alot of crap from the wife)
2nd attempt...
I changed the white wire to the red post.
result....
A dull glow from the tester with the switch on, no power when it's off.
Do I need to use 12-3 to the receptacle ?? Can someone tell me how to wire
this ???
thanks
Randy
|
284.126 | | WRKSYS::MORONEY | rearranger of rotating rust | Mon Jul 11 1994 13:00 | 11 |
| You seem to have wired the outlet into the guts of a 3 way switch setup. You
need to wire the black to the outlet to unswitched "hot", and the white to
neutral. They may not be available in the particular box you're using. If you
don't know how to find them, best that you get someone who does to do it
(electrical fires are not fun)
Also if the switch is using 12 gauge wire it's probably on a 20A breaker
or fuse. If so, using 14 to the outlet is underrated, this can cause
trouble under the wrong conditions.
-Mike
|
284.127 | 3 way ? | MAY30::CULLISON | | Mon Jul 11 1994 14:37 | 85 |
| about 4289.5, Randy
1st I am not an electrician, but here goes.
Basically I think you are asking for trouble. Why ? Sounds like you
are trying to tap into wiring for a multi way switch. It can be done
but you should know what you are doing. Can the garage
lights be turned on and off at more than one switch ?? If so
be careful.
The 14 gauge wiring definitely does not have anything to do with the
your problem. But like Mike said, if breaker is 20AMP then used
12 gauge wire.
Do not randomly wire in multi way switches unless you know what you
are doing.
....basic multi wire diagram for load, I believe !
from power
source
S1 w2 S2
w1 ------------------------ w4
HOT ---------- w3 ----------------------+
------------------------ |
garage
(load) lightbulb
w5 |
RETURN -----------------------------------------------------------+
GRD --------------------------------------------------------------GRD
the 12-3 wire used because they need 4 wires running from switch to
switch. 1 ground, 1 return, 2 switched hot, only 1 hot at a time
w1 = hot wire from source, 115v always present here
w2/w3 run between 2 multiway switches, at anyone time
1 is hot, other is not, depending on switch
positions
w4 is hot when switches s1/s2 are in same position
w5 is the return from the bulb
If you are at the S1 end connected to power source the wiring should
be straight forward. If at S2 end then you will have to
have your plug outlet as a switched outlet only unless you can
get access to another non switched hot wire. So your outlet will
probably only be on when garage lights are on. THe hot at S2 is really
switched hot.
I do not know the color convention for these hook ups.
If at switch end then you could determine what is what with a meter.
Two of the wires on the switch will be switched power feeding the
switch, one will be the switched power out of the switch to the load
(bulb etc.), this is the one you want for hot to plug box (w4).
The load output one will be the one that has power when garage light is on
for """BOTH""" combinations of switch positions which keep the light
ON. You have 4 switch combinations with two switches,
UP/UP, UP/down, down/UP, down,down. Two combinations are off, two are
on.
The return line for your box must be hooked to a return, which I do
not believe will be connected to the switch at all. Probably is
twisted together with wire nut.
I believe you affectively wired the new load in series with the
garage lights which is not what you want to do.
Unless you are comfortable figuring out then get someone who knows
what they are doing.
Harold
|
284.128 | | WRKSYS::MORONEY | rearranger of rotating rust | Mon Jul 11 1994 16:25 | 8 |
| Rereading .5 tells me the place is wired with the feed from the breaker box
going to either a junction box or the light's box, and the switches are off
12/3 single drops from this box to the switch boxes. (is there only one 3
conductor (+ground) cable to the switch box?) If so, there is no neutral in
the switch box, so you cannot use it to feed an outlet. Run the cable for the
outlet from a different source (perhaps the junction box if nothing better)
-Mike
|
284.129 | back to the drawing board ! | ICS::STUART | Boston Red Sox, 1994 World Champions | Tue Jul 12 1994 10:46 | 18 |
|
Thanks for the replies ..... I think .8 summed it up.
There is only the single wire into the switch, there is nothing tied
off in the box as mentioned earlier.
The whole garage is sheetrocked so this was the easiest place to get power
since it was right next to where I wanted the outlet.
I'll just have to run the wire from one of the outlets at the other end
of the garage and conceal it best I can, or I could take it from the
light box on the ceiling.
thanks again
Randy
|
284.130 | More detail | VICKI::DODIER | Single Income, Clan'o Kids | Tue Jul 12 1994 14:13 | 32 |
| re:8
The neutral would be there but it would be in series with the light
bulb. If the bulb blew, there would be no neutral. There would also be
no consistant hot-wire if you were in box 2 as that would be determined by
the position of the other switch. I'm assuming something like the following
exists -
------- ------
box | orrrrrrrrrrrrrrrro |
-------- | / | | \ |
bbbbbbbbbbbbbbbbbbbbbbbbbbbo | oww|
| | | obbbbbbbbbbbbbbbbo w|
Feed | | | | | w|
wwwwwwwwwwo light owwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww|
|_________| |_______| |______|
box 1 box 2
Legend: bbbbb = black wire
rrrrr = red wire
wwwww = white wire
o = terminal
o
\
o = 3-way switch
o
The reason that you got less power out of the plug is because no
matter what you do in box 1 or 2, you'll have the voltage drop of the
series connected light bulb through the neutral.
Ray
|
284.203 | | SSPADE::ARSENAULT | | Wed Oct 26 1994 18:01 | 6 |
| I'm about to wire a new house. I'm considering putting outlets in two
(large, not huge: 3x8 foot) closets. I can't imagine why anyone would
want an outlet in a closet, but it's so easy and cheap to add now that
I'm thinking of doing it.
Anyone have an opinion about the wisdom of doing this?
|
284.204 | It just takes some imagination | 2398::BECK | Paul Beck | Wed Oct 26 1994 19:40 | 5 |
| Sure. You could have one of those new-fangled night lights in there
(so there's always some light when you open it up), or you could
have one of those heaters designed to retard mildew buildup, or you
could hide in there with a TV when the in-laws drop in
unexpectedly...
|
284.205 | | SHRMSG::BUSKY | | Wed Oct 26 1994 22:45 | 7 |
| You could store/charge a dust-buster or rechargable flashlight in
there.
You could also set up a ironing board in there, ready to pull out
into the room with the iron all set-up and ready to go.
Charly
|
284.206 | last I heard the code says that a no-no | HNDYMN::MCCARTHY | I'm still not ready | Thu Oct 27 1994 06:48 | 21 |
| >>want an outlet in a closet, but it's so easy and cheap to add now that
>>I'm thinking of doing it.
Building inspector in Merrimack NH said its against the code. I can think of
several reasons why it would cause a problem - mostly having to do with really
stupid people - but then again - the vast majority of changes to the code over
the past 10 years have been because someone, somewhere, did something really
stupid and the code what changed to protect the rest of the world from doing
the same thing (IMHO).
Me, I have an outlet in one closet - because, in the future that closet will be
a hallway. He mentioned it at the final inspection and I said, I'd remove it
and put a blank cover over it.
You could ask who ever is doing the electrical work to wire one in and blank it
off but I don't think they will be able to actually put an outlet in there
(unless of course the inspector does not agree with the rule and they anything
can happen !).
Brian J.
|
284.207 | post-inspection work ;-) | SMURF::WALTERS | | Thu Oct 27 1994 08:47 | 8 |
|
Why not just put in conduit to a blanked-off box and leave a
pull-through in the conduit? That way, the box could be anything -
phone, cable, network or power. After the final inspection sign
off, you are free to do what you like.
Colin
|
284.208 | | LEFTY::CWILLIAMS | CD or not CD, that's the question | Thu Oct 27 1994 10:45 | 9 |
| If you have any possible reason for power anywhere, put the wires in
now. It's a whole lot easier and cheaper than a retrofit!
I've got a garage and basement that are without outlets, and it's going
to be a real pain to run all the wires now....
Sigh....
|
284.209 | In the lengthy process (for me) of finishing the basement | 19472::petert | rigidly defined areas of doubt and uncertainty | Thu Oct 27 1994 11:33 | 8 |
| > I've got a garage and basement that are without outlets, and it's going
> to be a real pain to run all the wires now....
If the basements not finished, then it shouldn't be too bad. If it is
finished, well, why was it without outlets???
PeterT
|
284.210 | | HNDYMN::MCCARTHY | I'm still not ready | Thu Oct 27 1994 13:05 | 8 |
| >> If you have any possible reason for power anywhere, put the wires in
>> now. It's a whole lot easier and cheaper than a retrofit!
That is why .9 said "run conduit" (well EMT or some sort of pipe). No snaking
of wires through insulated-filled walls - just pull the THHN through and hook
it up. It will cost you a good deal more though.
bjm
|
284.180 | | FOUNDR::DODIER | Single Income, Clan'o Kids | Thu Apr 20 1995 15:38 | 6 |
| One of the few things I've yet to do is install an outside outlet.
I know about the GFI breaker and I've seen the normal outdoor boxes. My
question is do they do anything special to mount the box to the outside
of the house (i.e. gasket, caulking, etc.) ?
Ray
|
284.181 | Easy | STRATA::CASSIDY | Tim Cassidy, #365 | Thu Apr 20 1995 22:32 | 7 |
| > question is do they do anything special to mount the box to the outside
> of the house (i.e. gasket, caulking, etc.) ?
Drill your hole from the inside. Caulk the back of the
box and mount it to the wall. Piece of cake.
Tim
|
284.336 | _______ | FOUNDR::DODIER | Single Income, Clan'o Kids | Fri Jan 26 1996 12:12 | 1 |
284.336 | _______ | FOUNDR::DODIER | Single Income, Clan'o Kids | Fri Jan 26 1996 12:12 | 1 |
284.336 | _______ | FOUNDR::DODIER | Single Income, Clan'o Kids | Fri Jan 26 1996 12:15 | 1 |
284.346 | Electrical box "extensions?" | PATE::JULIEN | | Fri Mar 29 1996 14:50 | 22 |
|
We are planning to install brick veneer between our kitchen
cabinets and the counter and I have a question about the outlets
that are there.. The fake brick will build out the wall about 3/8"
thickness.
The house if 4 years old and has plastic boxes nailed to studs..
a) Is there some kind of box extenders available to bring the box out to
the "new" wall?
b) buy another plastic box, and cut the 3/8" off the front and glue? it
to the existing box,
c) build out the outlet itself (with washers) to get the outlet flush with
the brick face.. (the outlet would not be fully in the box)
any ideas??
Thanks,
Dave
|
284.347 | | 2082::LIONEL | Free advice is worth every cent | Sat Mar 30 1996 11:09 | 3 |
| Yes, there are extenders - available where you buy electrical boxes.
Steve
|
284.348 | | PATE::JULIEN | | Tue Apr 02 1996 11:00 | 4 |
|
Thanks Steve, I'll track some down..
Dave
|
284.349 | | STAR::HAMMOND | Charlie Hammond -- ZKO3-04/S23 -- dtn 381-2684 | Tue Apr 02 1996 17:49 | 12 |
| It is my understanding that the code has an exception allowing boxes
to be recessed to allow for the reality of situations exactly like
this. i.e. box mounted too deep in wall to allow for full thickness
of sheetrock/plaster/panelling etc.
The box extenders I've seen would be too thick for a mere 3/8".
Personally, if the outlet was secure -- not loose -- I would not worry
about the 3/8". If it is loose, then that's a problems.
But since I'm not an electrician, a call to your local building inspector
might be in order.
|