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Distribution and use of electricity throughout the home. Electrical standards vary greatly worldwide, so you need to provide your location in your question or profile to ensure you get answers that are relevant to you. Posting photographs of wiring junctions or drawing a wiring diagram and posting it is also highly recommended.
18,925 questions
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What is the purpose of these holes on my wire stripper?
I have been using this wire stripper for a while, but I have always wondered what was the purpose of those holes in the center and above LOOP, and those teeth on the handles.
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88
votes
2
answers
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Why did my electrician put metal plates wherever the stud is drilled through?
My electrician put the metal plates pictured below wherever he drilled through a stud. My guess is that this strengthens the stud, because it was weakened by the holes he drilled.
Studs with metal ...
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65
votes
7
answers
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Can Romex (NM-B) cable be run through conduit?
A few days ago I asked an electrician if I could run cable through conduit - he gave me a funny look and said "No, Romex is not allowed in conduit."
When I searched online, there seems to be ...
61
votes
11
answers
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When I turn down the dimmer switch on my lights, do I actually use less electricity?
My wife and I have several lights on dimmer switches throughout our home. We generally prefer the ambient lighting provided by dimmed lights. I am curious, though, if we are saving any electricity by ...
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answer
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Half my power out, but firing up an appliance turns it back on
Hoping for some much needed help.
The other day my lights flickered and half the power and outlets went out in my home. They have gone and off periodically since then, spontaneously shutting off at ...
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54
votes
5
answers
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How can I fix electrical outlets that don't "hold" plugs that are plugged in to them?
In short, most of the outlets in my house have one working receptacle and one that any cord plugged in will immediately slip out of. Some of my outlets don't have any working receptacles (I hope I'm ...
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votes
12
answers
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What are insulated screwdrivers for if you’re not supposed to work on a live circuit?
It’s not just that I’ve been told by some people to never work on a live circuit as an amateur (I know that electricians often do work on live circuits)... but the package itself containing the ...
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53
votes
10
answers
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Which way is up? (electric outlet)
My house has electric outlets in both orientations. Which one is correct? Should the ground hole be at the bottom or the top?
OR
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50
votes
10
answers
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Should old knob and tube wiring be replaced?
I have been doing some electrical work in my house and I noticed it has old knob and tube wiring that is still hot, should this be replaced as found or is it fine to just leave it? It seems really ...
- 133k
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votes
10
answers
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How long should I wait before plugging in a new refrigerator?
Today I received my new refrigerator, and I've been told not to plug it in until a couple of hours have gone by. Some people told me a couple of hours was enough, but others have told me up to 12 ...
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votes
7
answers
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Why does this receptacle have the ground tied to the neutral?
I was replacing some outlets in my house with tamper-resistant ones, and came across one where the white and ground were wired together, as seen in this picture. Why? Is that okay or appropriate ...
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votes
3
answers
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What does "1 Gang", "2 Gang", and so forth mean when talking about electrical boxes?
What does a "1 Gang" mean when talking about electrical boxes?
Example: CARLON 1-Gang Metal Adjustable Electrical Box (Lowes.com)
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votes
8
answers
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Why Do 240V Circuits Not Require Neutral?
Someone told me that a 240V circuit does not require a neutral wire in the cable. Can anyone explain this phenomenon from the electricity perspective and generally explain why circuits do and do not ...
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votes
8
answers
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How do I run wires for a wall-mount flatscreen TV?
Like a lot of you, we have several wall-mounted LCD HDTVs in the house. The TVs have two wires -- power and HDMI -- running down the wall to the power outlet and cable box.
I've historically been too ...
- 1,099
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votes
8
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How can I pull a wire through a pipe that has too many turns for fish tape?
I need to replace a sump pump, but have run into a problem. The route for the cord goes through a 2" pipe with two 90 degree bends, and fish tape is ineffective. The pipe appears poorly jointed as ...
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