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Questions tagged [wire]

Questions about wires, usually seen in electrical applications. Questions with this tag are typically about sizing wires appropriately for the projected usage, but could also be about properties of or problems with a wire.

21
votes
4answers
79k views

Do I really have to fasten interior-wall electrical wire to a stud to keep it from moving?

I am fresh out of cable staples and would rather not go all the way to Lowe's just to get a box. What are the implications of not fastening loose electrical wires to a stud? It's not like there's ...
6
votes
4answers
65k views

Is it safe to install a three pronged cable into a four pronged dryer?

I just moved into an old home that has a three pronged wall jack as shown below: I have a newer dryer that has a four pronged cable. Please see the back of the dryer, I've removed the four pronged ...
187
votes
2answers
38k views

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.
13
votes
3answers
4k views

Mysterious cord running from wall. Safe?

My wife and I are preparing to sell our home and are discovering some weird things. Our home was built in 1958, so it is older. We found this in a corner that had some furniture in front of it. We ...
5
votes
7answers
46k views

How should I wire for a security system during construction?

I would like to run wires in anticipation of a future hard-wired security system. However, I have yet to find any information that pulls everything together regarding what is required. From what I ...
5
votes
3answers
7k views

Do I need to derate wire ampacity for two or more sets of wires in the same raceway for subpanel wiring?

I was planning to pull three sets of four conductors (3 AWG wire) through 2" EMT conduit for a 30' length that is common to all three sets of wires, and then branch off at a listed metal junction box (...
2
votes
1answer
8k views

Is it possible to do two 3way switched circuits that share a common power source but the power source and the light wire are in the same box?

I'm trying to connect two separate circuits from a single power source using 3way switches. My trouble seems that my wire from my light and my power source are in the same box. Is there a way to do ...
1
vote
1answer
1k views

construction heater wire requiarements

i want to install a 4800 watt construction heater in my garage that is already wired with a 60 amp subpanel. It has lots of room for extra breakers in the sub panel so i plan to install a 30 amp ...
0
votes
1answer
2k views

(How) Can I use existing stapled electrical wire to fish new wire?

I nicked an electrical cable while doing a plumbing repair and so need to fix it. I previously asked about repairing the damage in place, but there are receptacles 6-10 feet away on either side of the ...
4
votes
3answers
35k views

What type of wire should I use to feed a 70 ampere subpanel?

Finishing a basement and I need to add a subpanel. Main panel is outside. Subpanel will be in the basement. 70 Amp breaker in the main to feed the subpanel. I was thinking THHN but would this mean ...
8
votes
1answer
15k views

Can I extend an electrical ground wire with a copper wire crimp?

I am working with an electrical socket and I need extra length on the ground wire. It doesn't seem unreasonable that I can attach an extra three inches to the existing one and attach it with a copper ...
7
votes
5answers
16k views

Is this exposed wire dangerous?

I have this wire some of the inner part of which is exposed. My friend claims that this is highly dangerous, but I don't think that touching it would be lethal, and in the worst case scenario there ...
4
votes
2answers
2k views

How can I repair a nicked wire without adding a junction box?

I had to open up a wall for a plumbing repair and accidentally nicked the jacket of a NM electrical wire with my drywall saw. From what I can see, only the outer jacket was affected, but I admittedly ...
4
votes
4answers
19k views

How can I fix chewed through wires?

I have two standard two prong wall plugs my puppy has chewed through completely, and he managed to sink his teeth into a laptop cord as well. I'm thinking the wall plugs are history (a lamp and a ...
3
votes
2answers
4k views

NEC Definition of “Maintained Spacing” for Wire in Free Air

This seems like a simple question, but I cannot seem to find the answer in the 2008 NEC. There are references to "maintaining spacing" in many sections of the code such as the following: 310.15.B....
3
votes
1answer
177 views

Can I use individual wires from romex bundle?

I am wiring three overhead florescent lights in my unfinished basement and I need 14/3 because of where the switch is located. The wiring already present between the fixtures is 14/2. I have a length ...
3
votes
1answer
3k views

What is the best way to run underground electrical and low voltage in the same trench?

I'm putting in a couple of new electrical lines for my back yard. I have a trench dug from point A, to B, to C, etc.. I then had a bright idea. Why don't I put speaker wires and CAT6 under ground ...
2
votes
3answers
5k views

Where's the C terminal on my boiler control?

The new thermostat I purchased doesn't run on batteries, and needs 24 volt power. I have only a red and a white wire connected between the boiler and the thermostat, but there is also a third, unused ...
2
votes
3answers
4k views

Wire nut several wires together

I need a wire nut large enough so that I can bundle seven 14 gauge neutral wires together. I am trying to splice it so I can connect it to my new smart wifi leviton light switch. I don't know which ...
2
votes
3answers
537 views

I have 10/3 wire. Can I replace my 3 prong outlet with 4 prong for a dryer?

In my house there was a 3-prong outlet for the dryer and when I opened it I saw that there is 4 wires and the ground and neutral are on the same terminal. Can I change the outlet to a 4 prong? The hot ...
1
vote
1answer
661 views

Attaching Three Copper Wires Together Without Using A Wire Nut?

I am trying to splice a third copper wire to two currently present wires inside the electrical box of my switch I am trying to replace. Most resources online are telling me to use a wire nut to attach ...
0
votes
0answers
63 views

Rubber electrical tape safe under code for attics?

I'm buying a house. The attic had a wire with frayed outer insulation. I negotiated repair of the cable. The seller has responded that the repairperson wrapped the fray with rubber electrical tape (...
0
votes
2answers
178 views

Install wire rope to several steel tubes?

We have 13 1.5" round steel tubes that go around a small area in our backyard Each tube has a small hole that crosses the tube. I'm including the basic design: I would like to use wire rope (or steel ...
0
votes
2answers
310 views

Replacing a switch where power comes thru the fan to the timer switch, with only 2-wires? [duplicate]

I can see an answer where it suggests a 3-wire run from the fixture but I'm hoping to use existing wiring and it only has black and white wires coming from the bathroom fan to the old timer switch. ...