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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.
1,845 questions
44
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What is a tandem breaker (aka duplex, cheater, twin, double-stuff, etc.)?
I keep hearing about tandem breakers, and how they won't work with 240V loads and how they should never be used for a multi-wire branch circuit. Aside from those issues...
What is a tandem breaker?
(...
13
votes
1
answer
12k
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I'm hearing about load sheds aka EVEMS, and the devices differ. What's that about?
There seem to be devices to let you charge an EV on houses that wouldn't otherwise have the service capacity (Electric Vehicle Energy Management Systems). Some of them slow down EV charging, but it ...
24
votes
3
answers
3k
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First time changing switches and outlets (receptacles). Anything special I should know?
I am replacing a bunch of switches and receptacles in my house.
While I understand the basics, this is pretty much my first electrical project, and I figure there must be some hidden "gotchas" or ...
30
votes
3
answers
965k
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What wire gauge do I need for a 100 Amp subpanel at the end of a 60' wire run?
I am adding an attached garage to my house. I'm going to be putting in a 100 Amp subpanel which is about 60 feet away and run through the basement joists.
What gauge wire do you recommend for ...
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32
votes
6
answers
9k
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Electric shock - was I stupid, unlucky, or a combination of both?
One of the double sockets in our garage needed replacing (damaged after a washing pole hit it) - a pretty trivial job that I'd done before. So I flipped the MCB for the ring main, used a non-contact ...
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33
votes
5
answers
63k
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Is it OK to borrow a ground wire from a different circuit?
I've got a circuit in the basement carrying a handful of outlets. This circuit has no ground wire. I want to add a couple of outlets and want them to be grounded. I may even want gfci outlets on ...
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votes
9
answers
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How do I install a GFCI receptacle with two hot wires and common neutral?
In my kitchen, I want to replace a regular 120V receptacle with a GFCI-protected receptacle. The instructions describe what to do with a regular 2-wire + ground feed, with and without daisy chaining ...
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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
33
votes
4
answers
157k
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Should all Federal Pacific panels be replaced?
I understand that Federal Panel Stab Lok breakers have the potential for becoming stuck, overheating, and starting fires. My home has a Federal Pacific panel but no outward markings of being a Stab ...
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32
votes
5
answers
519k
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Is it ok to have mixed grounds and neutrals on bars in a breaker box?
So to continue my line of electrical questioning (and perhaps narrow down my flickering light problem), I took a look through the two panels in this house. There is a 200amp main service in the ...
- 5,155
44
votes
12
answers
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Is using 15 amp components on a 20 amp breaker against code?
I have noticed in a few different houses in Oklahoma that 20 amp breakers are used, but all of the outlets and switches only seem to be rated for 15 amps. This goes against everything I know to be ...
- 2,090
30
votes
9
answers
148k
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Is there a way to splice additional NM-B cable?
Is there a way without using junction boxes to simply splice in additional length of 12/2 NM-B cable? Can I use twist caps?
I'm putting in a dog door and as it so happens, there is some 12/2 right in ...
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14
votes
4
answers
14k
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Why not use a plastic receptacle box for an outdoor outlet?
This answer says "... it should be possible to cut into the wall and install a metal box (don't use plastic, please) [for an outdoor outlet]."
What are the problems associated with using a ...
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votes
7
answers
531k
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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 ...
14
votes
5
answers
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Can different gauges of wire be used on the same circuit?
My father-in-law is a builder. He has put in 20 amp and 15 amp breakers, and ran 12-2 as the home runs to the switches and the first outlet to make them hot. He then ran 14-2 to feed the rest of the ...
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