Questions tagged [wiring]

The installation of wire and/or electrical devices, to allow the transmission of electricity from one point to another.

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3
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2answers
889 views

Is my plan for wiring ethernet reasonable?

I would first of all like to start off by saying that I am a software developer by profession, so my networking knowledge is relatively basic. My question is therefore aimed at figuring out if I am ...
3
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2answers
2k views

Term to describe two circuits run through one /3 cable

For example, I have a 12/3 cable in which the red and black wires are controlled via separate breakers. The 12/3 drops into a single-gang outlet, out of which runs a 12/2 to another room. Is there a ...
3
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1answer
3k views

Where in the span of a floor joist can I drill holes to run wiring?

How far from the end of a 2x12 or 2x10 floor joist can I drill a hole? NEC 502.8 does not give this answer, only that you have to be 2" above or below the edges, not in what part of the span it has ...
2
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3answers
11k views

Can I steal a neutral wire from another circuit?

I have some Z-wave light switches that I want to install; below is a link to the diagram for the light switches. Basically I can have all the wiring completed minus the neutral wire for the switch at ...
2
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1answer
184 views

Determine if wire in switch box is safe to re-purpose?

I need to pull a neutral wire to my light switch for a smart switch. It's presently switching an outlet that I don't need switched, and the other side of the outlet already has unswitched power. My ...
2
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2answers
148 views

Can I still use a metal box if the cover plate mounting holes are stripped?

The metal double-gang box (40 yrs old) is stripped where you place the 8/32 screws. I should have replace the box in the beginning. It took me an hour or so to put a nut on both of these screws from ...
2
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2answers
4k views

Suitability of flexible metallic conduit serving as ground

EDIT: The attached photo is the most easily accessible example of the conduit used in the entire house. This shows the conduit attached to the garbage disposal with the previously mentioned 3/4 set ...
2
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2answers
209 views

Can someone explain this wiring configuration to me?

See my previous question for more detail on my household's bizarre wiring. Three of my bedrooms have dimmer switches connected to outlets and ceiling fans, which is electrically unsafe and just ...
2
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3answers
16k views

How can I replace a 4-way mechanical switch with occupancy sensor(s)?

There is a stairwell in our house, which is currently lit by a fixture controlled by three switches: a 4-way and two 3-ways. The wiring was done very recently and, I'm certain, in accordance to modern ...
2
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3answers
319 views

Do circuits with #12 wire need 20A receptacles?

In one of the bedrooms all of the duplex receptacles are 20 amps. Do I need a 20 amp switch? Also, I have a garage which is about 30 feet from the house and the wire that goes underground is either ...
2
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1answer
3k views

How to trace mystery switches

Since I moved into my house last year there are a couple of wall switches that remain a mystery to me. I don't know what they do, if anything. What are my options for tracing these switches? I'm ...
2
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2answers
2k views

Why are most of my cable/coax wires disconnected?

I'm researching an ethernet-over-coax solution for my home. In my closet where all the cabling meet, all but two coax cables are disconnected. There are 14 cables altogether, with 12 cables entirely ...
2
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2answers
3k views

How can I get 30 Amps @120V using several 12AWG and/or 14AWG cables?

I'm trying to power a 30 Amp x 120 Volt RV plug near the perimeter of a five-acre property (200' from the breaker panel). I do not want to buy, dig and bury a new 10-gauge UF cable. However, the ...
2
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2answers
4k views

Adding USB Dual Port Charger Receptacle Blows Mains

I purchased a Hubbell "USB Dual Port Charger with 15A Duplex Receptacle" from Lowes to replace the duplex receptacle on my kitchen island. I first opened the circuit labelled for the island. The ...
1
vote
1answer
17k views

Shouldn't a kitchen 'fridge be on it's own circuit?

I thought major appliances like refrigerators in newer houses were supposed to be on dedicated circuits. I just replaced a melted outlet in my kitchen. It was a 15 amp outlet, wired as a pass-through ...
1
vote
1answer
187 views

Adding a new switch with an independent light in an existing circuit

I have two switches at the bottom of my stairs in the basement. One switch is a three way to the switch at the top of my stairs. The other switch lights a series of lights all connected to the same ...
1
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2answers
2k views

Circuit tester trips new GFCI

I replaced a non-protected receptacle with a GFCI type and now my circuit tester trips the GFCI as soon as it is plugged in. The receptacle tested fine before replacement, ground, neutral, hot, etc. ...
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3answers
5k views

Add combo (switch and outlet) with only two wires out of wall for the current light)

I probably have this diagram for my project. Or problem. Facts: a) only 2 wires out of wall, B & W; b) switch ON, lights ON Ceiling electrical box: One black and one white connects to the ...
1
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2answers
329 views

Cabin Wiring Plan Revisited

OK, So I’ve update my wiring plan … see images. I have more details now, such a part numbers, specifications and ratings, etc. I’ve consolidated much input from a couple of forums as well as Stack, ...
1
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1answer
1k views

Should neutral be bonded to ground in main and subpanels?

I had a licensed electrician replace my main panel and also install a subpanel in my garage. At the time I knew nothing about electrical, and now I know just barely more than nothing. I have ...
0
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1answer
400 views

can I put 3 new light fixtures and switches on the same breaker

I have a person that wants to wire in four actually light boxes for ceiling fans with switches and I need to know if I can run all four of them safely from one breaker and if so what kind of breaker? ...
0
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1answer
137 views

How safely bring lamp wire into house?

I'm considering replacing an outdoor lighting fixture with an LED motion-sensitive fixture, but I'm not sure how to safely do the wiring. The location is protected (under a porch) but still needs to ...
0
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5answers
40k views

Since neutral is connected to ground how is current kept off of ground?

If neutral is connected to ground and current desires ground then I would think it would go to ground. But my understanding is that it is kept off of ground until it's "upstream" of the breaker box, ...
0
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2answers
1k views

Sharing my 240V 30amp between two dryers

We are running a clothes dryer in the lower level of our home. We are installing a washer and dryer on our main level. Can I split the power feed between both dryers and what can I use and where can ...
0
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5answers
13k views

How can I wire an exhaust fan to turn on from multiple locations?

I just bought a Panasonic FV-20NLF1 inline bath exhaust fan that I planned to used to exhaust 2 different bathrooms. I want each bathroom light switch to control the fan, so when the lighting turns ...
-2
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1answer
2k views

Is 6/2 Romex the correct wire gauge for a 100' run to a workshop?

I bought an old house that has a fuse box. The place has a milk barn that I want to convert to a workshop. Can I run 6/2 wire from the the two 120 volts wires coming from the fuse box? I want to ...
30
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8answers
58k views

How do I wire an old house with Cat6?

I have a older home (build in the 50's) with 1/2" dry wall and then plaster on top. I would like to run Cat6 cable through most of the house (living room, kitchen, entertainment room,etc). So, I'm ...
22
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5answers
45k views

What is the proper way to run Category 6 underground?

I'd like to run some Category 6 cabling underground, for a distance of about 120 ft, between a main home and a 2nd unit, for ethernet connectivity between the two homes. I've run Category 5 indoors ...
12
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6answers
40k views

Is “don't mix data and power cables” and “don't loop power cables” still valid nowadays?

There are two sayings I keep hearing when talking about wiring e.g. home cinema or computer hardware; Don't wrap data/network cables and power cables up in the same loop because the power cables will ...
8
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4answers
5k 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 below....
19
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3answers
23k views

Is running ethernet cable through an air return allowed under US code?

I'm looking to wire up the second floor of my house and the cold air return provides a convenient, straight run from the office to the utility room. Is it safe and within code to run ethernet cable in ...
6
votes
1answer
3k views

What should I do about old cables that have been damaged?

I was replacing some drywall and noticed the wiring underneath has a couple of surface tears. House is from the sixties, but has been rewired with new Romex, except this circuit. Wire seems to be old ...
6
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5answers
157k views

How do I use a multimeter to check for power?

I need to check that power going from my light switch, to a light fixture on the same wall, as well as a light fixture on the opposite wall. How do I use a multimeter to do that?
5
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2answers
31k views

How can I find the first receptacle in a circuit?

I know how to wire a GFCI receptacle and all the things to go with it in doing so. But what I do not know is the following. I understand the GFCI receptacle should be first in line to protect the ...
2
votes
1answer
5k views

Can I connect 12 AWG wire to 10 AWG in a junction box?

This may sound like a dumb question, but I'm adding some electrical outlets to my garage using 10 AWG wiring in conjunction with 30 amp circuits. I am running 10 AWG THHN through conduit to multiple ...
14
votes
2answers
19k views

Splitting a 220 V line into two 110 V lines?

In my garage I have wiring for a 220 V outlet. It is a four-wire setup (two hots, one neutral and one ground). It is set up on a 20 ampere, double breaker in the circuit breaker box. I want to ...
13
votes
3answers
22k views

Can I use two wire nuts instead of one to connect 6 wires inside a 3-gang box?

Is it considered acceptable practice to use two wirenuts in a situation where it is possible to use only one but may be easier to use two? I have a three-gang box with six cables coming into it. The ...
10
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2answers
41k views

Is there any code for running Ethernet cable (through attics)?

We have an unfinished attic - the insulation-everywhere, step-in-the-wrong-place-and-fall-through-the-ceiling kind. I'd like to run Ethernet cable through the attic. I know for Romex, I'd have to ...
10
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3answers
17k views

What to do with an apartment with only 2-pronged outlets

I just rented an apartment (Colorado, for what it's worth RE code) that has 2-pronged outlets throughout the place except for two GFCI's, one in the bathroom and one in the kitchen. I bought the $....
9
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3answers
63k views

Can I use SCH 40 for buried and above ground feeder wire?

I'm running 2" PVC from my house to a detached garage to run a 60 amp feeder. Looking at the NEC, it looks like I need to put it in SCH 40 below-ground. However, it looks like I have to use SCH 80 ...
7
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2answers
5k views

Damaged wire while drilling wall caused power to go out. How to fix it properly?

I managed to damage two wires/cables: tv/internet and a power wire. There were three of power wires: a blue, a black and a green/yellow. I've damaged the black one, but just a little bit. When the ...
4
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2answers
3k views

How can I connect a WIFI thermostat to a Honeywell R845A switching relay?

I'm trying to install a wifi thermostat and it won't power up. The old thermo was battery operated 2 wire but there were spare wires. At the R845A relay, red and white whites connect to terminals 5 ...
3
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3answers
28k views

No Ground Wires - Can I connect a wire to the metal box for ground?

I want to install new z-wave light switches that require a ground, but it appears that none of the electrical boxes in my house have ground wires and the previous light switches didn't use a ground. ...
3
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2answers
9k views

Is this a valid way to add an electrical outlet?

I've got a feed from my electrical panel in the garage to a single outlet inside the house (for the entertainment center). This was installed by an electrician back in 2009. Through the garage, the ...
2
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1answer
116k views

Wiring to a detached garage

I have a detached garage approximately 50' from the house supply panel. I want to wire 6 outlets & maybe 2 overhead lights. I will have no heavy use, mainly 1 outlet & overhead lights. I have ...
11
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3answers
277k views

What wire gauge should I use with a 30 amp breaker for a 220V welder?

I am installing an outlet in my garage for a 220v mig welder. The welder specs call for 30A breaker. The outlet for the welder is only 2 feet from the garage sub panel. The wiring refernece charts I'...
11
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3answers
5k views

What size extension cord should I use for multiple computers?

We're hosting a LAN party (several computers, 50+) and I had some questions about power draw; I hope this is the right place to ask. Currently, we're assuming each PC will draw an average of 3.5 amps....
8
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4answers
26k views

How to hang modern fixture over old square recessed box?

I purchased a home built in 1958 and a few rooms have these square recessed light boxes. I would like to hang a larger diameter modern flush-mount fixture over them, but I'm not sure what the way to ...
8
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3answers
39k views

How do I wire a brand new cooktop that has no white neutral wire?

My old cooktop which is being replaced connects to a j-box with black, red, white, and bare ground wires, which goes to a 40 amp circuit breaker (US here, noticed this site is popular with Europe too)....
8
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1answer
8k views

Any reason not to ground the sheathing of MX wire?

Having recently bought an older house (c1943) I am doing a little work on the place. While rewiring a light switch I noted that there is newer Romex wiring from the distribution panel to the switch, ...