Distribution and use of electricity throughout the home. Electrical standards vary greatly worldwide, so providing your location in your question or your profile helps ensure you get answers that are relevant to you.

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0
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1answer
377 views

How do I wire a 4 terminal light fixture

How do I wire a porcelain ceiling light fixture with two sets of terminals (two hot/two neutral) instead of the usual two terminal fixture?
3
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2answers
3k views

Do outlets in damp locations require GFCI protection?

The title says it all. It appears wet locations require not only GFCI protection but also weatherproof boxes and appropriately rated everything, but I can't find much addressing damp locations. Most ...
6
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0answers
58 views

Beeping in My home [duplicate]

Possible Duplicate: what is beeping in my house? For the past 3 weeks there has been a beeping in my house. It sounds like a smoke alarm. It beeps at about 40 second intervals. Early on ...
5
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3answers
5k views

Should I be concerned about fridge/freezer airflow?

We just recently had the following counter/cabinet system put into our basement family room. After everything was done, I started to get concerned about airflow. The enclosure was built in such a ...
4
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1answer
2k views

Are there octagonal box extenders that are slimmer than 1 1/2" deep?

Is there an octagonal box extender that's slimmer than 1 1/2" deep? So far I haven't been able to find one. Here's why: to cover up 30 years of patching on one of my plaster and lath ceilings, I'm ...
3
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1answer
5k views

Convert line voltage heating system to use low voltage thermostats

I currently have two line voltage ceiling radiant heating systems in my condo each with their own DPST thermostat. I'd like to use low voltage thermostats such as the nest. I found this ...
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2answers
1k views

Should I replace this fixture box or get creative with the mounting?

I recently took down a ceiling fan/light in order to replace it with track lighting. After disassembling the fan I was left with this fixture box: As you can see there are two holes in which to ...
7
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2answers
811 views

Will security system wiring cause interference in data cables?

Is it acceptable to run 22/4 security wire along side Cat6 and Coax cables, or is there any possibility for interference?
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0answers
69 views

Should I separate neutral and ground wires in the main breaker panel and why? [duplicate]

Possible Duplicate: Is it ok to have mixed grounds and neutrals on bars in a breaker box? I've recently opened my breaker box to connect a new line. I found that all the wires that go into ...
5
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1answer
3k views

Can I replace an old exhaust fan and connect it to an existing light switch?

I just purchased a new home and in one of the bathrooms there is an old exhaust fan and two light switches. There is a recessed light located in the ceiling above the shower and another light above ...
3
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1answer
4k views

How can I add a GFCI breaker on two circuits with a shared neutral without rewiring? [duplicate]

Possible Duplicate: How do I install a GFCI receptacle with two hot wires and common neutral? I have a pool to protect correctly. There is a 12/3 wire: red serves the receptacles at the ...
6
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4answers
3k views

How Do I Plan for an Intrusion Detection System?

I would like to plan for an intrusion detection system in a home that is currently under construction. The home has a walkout basement that is sloping, shown in the rear elevation picture shown ...
6
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2answers
11k views

Why does my fluorescent light fixture take minutes to turn on in high heat and humidity?

Our kitchen fixture won't come on for 3 to 5 minutes when the temperature goes over 90°F (32.2°C) and 90% humidity. It flickers and only reaches 80% brightness after that. It will occasionally ...
4
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2answers
4k views

Do open-back low voltage boxes have advantages over standard outlet boxes?

I will be running LV wiring in new construction. I've seen the open backed Carlon boxes, but have read that they are difficult to insulate, and therefore should not be used on exterior walls. I ...
14
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4answers
8k views

What should I use to secure/organize data cable runs?

I am running Cat-6 and Coax in new construction. I am looking for advice/best practices on how to organize and secure the cables during the runs. I will be running 2 Cat-6 and 1 Coax to a ...
5
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1answer
9k views

How do I wire a duplex outlet from a switch/outlet combo?

The power comes first through a switch/outlet combo and I need to it take further down to a duplex outlet. The switch will control half the outlet and the other half will always be hot. This is ...
7
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1answer
5k views

How can I remove a switch and terminate a circuit in its place?

I have a switch that used to control outdoor lighting. It no longer does any more and I'd like to just leave it off permanently. Is there an easy way I can terminate it from within the gang box? ...
5
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2answers
5k views

Does one wall socket share power between both ac plugs?

In a standard wall outlet (two three-prong sockets) do both sockets share power? Say I plugged a surge protector into one and a surge protector into the other and have 5 devices connected to each ...
5
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1answer
4k views

How to open NM box knockouts?

I've found the knockouts in NM boxes hard to fully open. I've had trouble with both Carlon boxes and Madison Smart Boxes. The plastic molded to make the knockout is very resistant to actually being ...
6
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2answers
380 views

Induction power source across 1/2" of wood?

I'm looking for a way to put a small lamp inside a piece of furniture through which I do not want to drill any holes or run wires along. Are there any premade induction power systems that can get a ...
0
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2answers
171 views

What could cause my newly installed disposal to not work?

I just replaced my garbage disposal. Completed install. Darned thing won't start. Checked the wire nuts two and three times. Nothing. Ideas?
3
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2answers
1k views

What kind of light can I install in a small, low-ceiling coat closet?

Our Northern California house has a small coat closet (really a hallway with 2 doors and hooks for coats) between our front entry-way and our basement. It's a tiny space: 3 feet wide, 5 feet deep, and ...
7
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4answers
8k views

Why would a CFL bulb dim by itself after 60 seconds?

I have some GE Energy Smart CFL bulbs which are advertised as "Bright from the Start". This is true, except within 60 seconds after I turn the bulbs on, they will dramatically and immeidately become ...
9
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3answers
2k views

Is an ungrounded GFCI outlet safer than a plumbing-grounded non-GFCI outlet?

I'm in the United States. I have a handful of three-prong outlets that have been grounded to the underground water main just as it enters the crawlspace. All of the ground wires are home runs to the ...
3
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4answers
4k views

GFCI not tripped, but no current downstream

I have an outside shed with a non-GFCI outlet and a light fixture. Only the light is controlled by a switch. The shed is wired off of an outside GCFI outlet. Everything, including the outlet, was ...
5
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2answers
7k views

How can I replace multiple 3 way switches with motion sensors?

My tenants never turn the lights off in the stairwells of my 3 family house, so I'd like to replace all of the light switches with motion sensors. Here is a crude diagram of how this is set up now. ...
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2answers
662 views

Are CFLs available with mini candelabra bases? [closed]

Trying to replace a light bulb that has a mini candelabra base and want to replace this bulb with a CFL bulb but can't find any. Are CFLs available with mini candelabra bases?
5
votes
1answer
719 views

Do I need to attach a wire fished through a ceiling?

I have a finished basement and am mounting a flat-screen TV on the wall and I want to put an electrical box behind the TV. The two existing outlets are both two joists over and each separated with a ...
13
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4answers
88k views

What is a GFI outlet used for, and where should I install them?

What purpose does a GFI serve? Where should they be used?
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4answers
8k views

How to diagnose an electrified refrigerator frame?

Recently (or, perhaps, I recently noticed) my garage fridge started shocking me if I touch it in the wrong place. (A sampling of "wrong" places: the door hinge, a spot on the other corner where the ...
5
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3answers
5k views

Can I add four 20Amp circuits in a subpanel with a 10-3 feeder?

My garage has two 20 Amp circuits and an unused 10-3 w/ground connected to two 30 amp breakers. I want to use those unused wires for a subpanel but i'm not sure how big of a panel could I install? I ...
4
votes
2answers
703 views

Can I add a second circut using an existing ground and neutral?

I would like to add a second circuit to my BBQ area. There is conduit running from the panel to the BBQ with three wires, hot, neutral and ground. Can I just add a second breaker and run a second hot ...
2
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2answers
4k views

Where can I get NM cable clamps for a metal box?

Doing old work with 12 AWG cable makes finding large enough boxes tricky. I have seen some appealing metal boxes, but I am wiring using NM cable (Romex), which needs cable clamps where it enters a ...
8
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3answers
10k views

Why is ENT rarely used for electrical wiring?

As best I can tell, the National Electrical Code 2011 allows electrical non-metallic tubing ("smurf tube" or ENT) to be used for running 120 V electrical wire. But everywhere I look, I see remarks to ...
3
votes
1answer
648 views

How do I attach a receptacle box to brick instead of a stud?

I need to install some new outlet boxes in an old lathe and plaster wall. I have the baseboards pulled out so I can see where the studs are, which is just great. However, behind the lathe is a brick ...
1
vote
1answer
1k views

Why am I measuring low voltage when I connect this fluorescent fixture to an existing circuit?

My bathroom has two switches: one [was] connected to two overhead can lights (with CFLs), and one [was] connected to a fluorescent wall sconce (one of those ugly circular plastic things that I can't ...
4
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2answers
6k views

How can high and low voltage be mixed in a junction box?

So I'm aware of the standard rule of thumb, keep high and low voltage away from each other, preferably on opposite sides of a stud. However, while looking at some properties, I'm seeing telephone and ...
2
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2answers
4k views

Connecting a digital timer with 4 wires in a box with only three wire, white, black, and ground

I installed a digital timer in a box that previously contained a switch to an outside porch light. The box has only a white, black, and ground wire. The white wire in the box is hot, not the black, ...
3
votes
1answer
449 views

What is this orange clip my ground wire is connected to?

I am trying to replace a dome light with a nice small ceiling fan. When disassembling the old light, I notice an odd orange/clear clip connecting the lights ground to the house. What is this called, ...
9
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13answers
44k views

When wiring outlets should I use pigtails or both sets of outlet screws?

I'm replacing the outlets in our house and pulled out one that had two black and two white cables. My first thought was that it was two circuits, one of them being switched, but then realized the tab ...
4
votes
2answers
4k views

Why does my computer have a ground fault only when a peripheral is attached?

I have a weird problem regarding grounding: I have a computer, printer and a LCD screen connected to the electric outlet through a power strip. My computer is zapping me when I touch the body so I ...
5
votes
2answers
2k views

How can I extend a wall outlet?

I have a interior brick wall, with wall outlet in it, I am covering the wall with 1/2" sheet rock. But I am ancoring 1x2's on the brick so I can hang the sheetrock. How would I extend the wall outlet ...
5
votes
4answers
11k views

What could cause ceiling fan lights to flicker on with power and then go out immediately?

I have ceiling light fan. The fan works fine. The light used to work fine. All of a sudden one day the light started acting up. When I turn on the switch, the light flickers on for about a second ...
5
votes
5answers
1k views

What is a good tutorial on the use of a multimeter?

I am ashamed to admit, that despite my many electrical (mis?)adventures.. I have no idea how to use a multimeter. I have installed automobile sound systems, central air air-conditioners, and every ...
4
votes
1answer
995 views

How can I get recessed lighting on a middle floor? [duplicate]

Possible Duplicate: How do I install uninsulated halogen can lights? I would like to install some recessed lights in my living room. I've done this sort of job in houses with an attic ...
8
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3answers
844 views

Are there any differences in the quality of products sold at contractor's supply store vs. big box hardware stores?

We are in the early stages of building a new house & went shopping for lighting fixtures yesterday. We get an allowance from the builder which we know will be used up very quickly after visiting ...
2
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2answers
17k views

How can I separate a light switch to power two different devices?

My house had an addition after it was built - a covered porch which includes a lit ceiling fan. I very recently screened in said porch and love it out there. When the initial addition was put on, ...
2
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1answer
191 views

How to move a garage opener switch and minimize damage to sheetrock

The garage opener was installed a couple feet away from the door which makes it awkward to trigger in enough situations that I finally just (temporarily) nailed it over next to the doorway. But I ...
3
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2answers
2k views

What are the current and voltage limits when determining low vs. high voltage wiring?

I'm trying to figure out what is considered a power line( for outlets) and data communication line. What are the qualifying factors here. I know outlets have 120V AC at 60Hz and data lines have ...
14
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5answers
4k views

Is there a lifetime failure count for a breaker?

I have an external cutoff for my air conditioner that has two physical fuses (TR-50's, time delay 50 amps) outside. This is between the condenser unit and the main power panel, where it is protected ...