New answers tagged

0 votes

Is my wiring to subpanel adequate?

You did just about right, actually. Ground rods, fat conduit, #2 aluminum which is approved for 90A in this circumstance (as feeder panel-panel). There's no worries on voltage drop. You are only ...
1 vote

Safe to run LED strip extension wire under an oven?

Run it around the back of the oven just above floor level. Attach it to the cabinet walls and the back wall, just the same way you're attaching the strips to the baseboard. That way the wire won't be ...
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-2 votes

Is my wiring to subpanel adequate?

You would need at least 0/1 wire to have 60 amps at your shop at that distance (I rounded to 180 ft). I believe #1 wire would be 99amps at 160 feet. This is what I've researched for a project I was ...
0 votes

Adding a new light fixture to existing circuit without destroying the walls/ceiling

One option is to surface mount a connection to the downstairs switch. I'm uncertain if that's what you want, but it would not require any changes to the existing fixture.
3 votes

Do I need to run romex wires if it's in conduit?

Metal conduit can be used/is used as ground. Extra ground wire is not needed. If plastic boxes are used, think there are ground connections to attach to conduit. From other questions on here, a cable ...
  • 11.4k
9 votes
Accepted

USA - Split 240vac to feed two GFCI circuits

So I have a situation where I need to use a direct burial 10/2 with Ground to feed Two 120vac branch circuits by using the ground wire as a shared neutral. It doesn't matter whether you "need to&...
4 votes

USA - Split 240vac to feed two GFCI circuits

Absolutely not. You certainly may not set up new circuits in 2022 with bare as neutral and no ground. You must have separate neutral (must be insulated) and ground for 120V branch circuits. There are ...
  • 3,771
4 votes

USA - Split 240vac to feed two GFCI circuits

NO. You can't use ground wire for neutral. Neutral can carry current, that is why it is insulated. About the only thing you can use is the 10/2 wire is for one circuit. Will need to change to a ...
  • 11.4k
6 votes
Accepted

Luminaire disconnect

These disconnects were made specifically for compliance with NEC 430.130(G) and CEC 30-308(4) which require disconnect plugs like this for fluorescent light ballasts. At the time this rule was ...
4 votes

Adding Light to Existing 3-Way Wiring

Everyone who asks this question wants the same thing. They want to be able to wire the new light off a switch. That is not possible unless you know the switch wiring intimately AND you get lucky. I ...
1 vote

Providing a ground to old 2-wire connection in a detached garage

If the connection for the garage subpanel is in metallic conduit, that serves as the ground. Visually inspect the connection from the main panel that leads to the subpanel, and the connection that ...
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3 votes

Adding Light to Existing 3-Way Wiring

The problem with doing what you want is there is no switched hot between the two switch boxes, only travelers (which are only controlled by the first switch). Your only choices are to either add a new ...
  • 9,352
1 vote

How to connect up a new light fixture

It could also be that the red is smoke/fire alarm. What I'd do is get a stick tester (or voltage tester if you know what you're doing), then turn off the light switch. Check the black and red wires ...
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2 votes

Do I need 5 separate disconnects for my 9k btu 5 zone mini split?

You don't say where you live, but in New Hampshire the chief electrical inspector for the state ruled in 2015 based on NEC 2014 that each indoor unit needs its own disconnect so that it may be ...
  • 5,136
2 votes

How to connect up a new light fixture

Based on your comments, and normal practices, black to black (brown?), white to "aged white" that you call tan, and ground to green. The old fixture may well have lacked a grounding wire. ...
  • 146k
5 votes

Replaced standard Siemens 15 amp light circuit breaker with new Siemens 15 amp dual function. Standard was fine but new dual trips immediately

The first thing to do is to check the manual and find out how to distinguish between arc fault, ground fault and overcurrent types of breaker trips. Since a regular breaker works fine, that should ...
2 votes

I wanted to eliminate backsplash outlets only to have holes cut into my lower cabinets. Contractor says this is code for Atlanta GA

Code allows receptacles almost anywhere. But normally you have (and I think code requires) receptacles in a kitchen every 4' (certain exceptions around doors, appliances, etc.) in accessible places. I ...
0 votes
Accepted

TV Wire Concealer

You slightly misunderstand. Cook County does not ban NM/NM-B wiring (common brand “Romex”) but it mandates the use of conduit to contain all power wiring. You could legally put NM cables in conduit, ...
  • 3,771
-1 votes

TV Wire Concealer

It's not allowed to be used in Chicago. I would never install anything electrical from Amazon in my house. You can get an old work metal box and fish some BX cable from it to a nearby outlet and ...
  • 60.5k
2 votes

Do I need 5 separate disconnects for my 9k btu 5 zone mini split?

5 zone minisplit probably needs ONE disconnect, in line of sight and less than 25(?) feet from the outside unit (which I assume there is one of, as you did not say 5 separate mini-splits, one for each ...
  • 146k
3 votes

How to wire replacement bathroom fan and light switches?

Grounds As explained in another answer, all grounds together in a plastic box. In a metal box the switches (and better quality "self-grounding" receptacles) ground through the yokes. Wires ...
2 votes

How to wire replacement bathroom fan and light switches?

Grounding is absolutely required if those switches are replaced. If possible, remove the wires from the back side of those switches. Sometimes the "backstab" connectors won't release and it'...
2 votes

how to wire ceiling fixture with only black white and ground wires into box with black red green and white wires?

Connect fixture black to ceiling box red instead From what you've done so far, it's clear that the black wire in your ceiling box is an always-hot wire. So, we can safely assume by elimination that ...
1 vote

Rocker switch panel wiring

These 5 pin gang rocker switch panels can be a little tricky to get your head around alright! Here is what the 5 pins wire to: Positive IN for LED backlights (always on) Negative OUT for LED ...
2 votes

Are outlet cables required to be run in a single sequence?

In home wiring, the route of cabling is in a "tree topology" meaning there are unlimited branches, but no "loops back to itself". Reasons below. A vine topology (one long string) ...
1 vote

Are outlet cables required to be run in a single sequence?

There are a few different issues here: Old cable - that has already been discussed, and will be a decision for the inspector, unless you redo it with new cable before inspection. Separate home runs ...
0 votes

Are outlet cables required to be run in a single sequence?

You cannot connect more wires to a breaker than is specified for that breaker, which is usually one. If you've already done the wiring which appears to be the case, there's no reason to redo it. You ...
  • 60.5k
0 votes

Are outlet cables required to be run in a single sequence?

No, cables to outlets are not required to be run in a sequence. Nor is there any inherent benefit to doing so. Since A/C wiring is always in parallel, it doesn't matter at all how the cable gets to a ...
  • 109k
0 votes

Are outlet cables required to be run in a single sequence?

If just to have outlets in the garage then they should be together, wire goes to one outlet then to the next. If needing outlets to power high amp(16 amp) machines then one outlet per breaker can be ...
  • 11.4k
3 votes

Are outlet cables required to be run in a single sequence?

The circuit breaker itself will have specification for how many wires it can support under the lug, typically just one, and what torque you need to achieve. I'm really confused as to why you would ...
  • 12.6k
2 votes

Need Help with Replacement Light Fixture Grounding Choices

There doesn't appear to be any reason to use the bracket from the first picture with the light in the second picture. Unscrew the wire nut holding the ground wires (pointed to by the big purple arrow)...
  • 32.6k
4 votes

Need Help with Replacement Light Fixture Grounding Choices

I rarely recommend cutting a wire, but in this case, go for it. Cut the wire right near the rivet. The trick with your application is that most people have the yellow, red or tan wire nuts, and you ...
3 votes

Need Help with Replacement Light Fixture Grounding Choices

The bracket needs to stay grounded. Take the wire nut off the bundle of ground wires, add the (new) fixture ground wire, twist wire nut back on. Done.
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1 vote
Accepted

Is this bathroom wiring correct?

This isn't wrong as old work, but it's decidedly suboptimal While the wiring depicted is Code-correct for an existing (pre-2011) installation insofar as it goes (can't tell about grounds since they ...
2 votes

Is there a maximum length for L14-30 generator cables?

Amazon is an inherently dangerous place to buy electrical gear, since Amazon has opened its site to 3rd party sellers - such as the item you linked there. Amazon is not the seller and does not vouch ...
6 votes

How do I get my 4-way switch to work correctly with two 3-way switches?

Top or bottom means nothing on a 3-way or 4-way switch. What matters is the colors of the screws, or if they're not special, the markings. I think you're assuming that switch manufacturers got ...
3 votes
Accepted

Is there a maximum length for L14-30 generator cables?

With wires/cables code sets the minimum size gauge that can be used at certain amperage. For 30 amps the minimum is 10 gauge. There is nothing wrong about using larger gauges. There is no maximum ...
  • 11.4k
2 votes

Is there a maximum length for L14-30 generator cables?

Welcome, hopefully we can answer your question. The length would be ok, just be sure the gauge is large enough for your load. The difference between ETL Listed and UL Listed is the testing lab. Both ...
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4 votes
Accepted

Do I need an GFCI Breaker if my outdoor outlets are GFCI

I'm a little confused about what your Alcan 3/C cable is. Is it 3-wire including ground, or 3-wire with ground also? I gather it's #12 aluminum which doesn't bother me if you make a point not to ...
5 votes

How to patch underwater power line

I'm going to add something to Milwrdfan's answer, in that I agree the cable should be replaced. That's not UF cable, and looks curiously like NM cable, in that it seems to have a simple jacket (UF ...
  • 21k
3 votes

Changed vanity light to a switch light but only works with ceiling light on

Let's go all the way back to the original setup. the pull chain vanity light that was originally on there was capable of being turned on without the ceiling lights being switched on The ceiling ...
2 votes

wiring diagram for double gang box bathroom

This is quite doable, without putting anything but the outlet, assuming that there is a completely separate connection to the integrated switch. As far as I can tell, most of these combo outlets have ...
  • 9,352
-1 votes

How to patch underwater power line

You can wrap it with electrical tape, and then apply pvc cement to melt/rebond the tape into a shell. https://99mpg.com/mikestips/blacktape/
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2 votes

Wilo Star S 21 FX pump for outside wood burner using only a 2 wire power supply (hot and neutral)

First off, some pictures of your junction box would help us determine what you can do here. I'll address your questions one by one. I have a black wire (hot) that goes to the "L" slot, and ...
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0 votes

How to patch underwater power line

I would use self-sealing rubber tape. The ground wire has been wet, so may begin to corrode. If possible, a hairdryer or heatgun could disperse water before you seal it back. Whatever you do should ...
21 votes

How can I measure the actual amperage rating of my circuits so I can match it with correct fuses/breakers?

... the previous tenant ... This indicates to me that this is a rental property. Call the landlord and ask him to review to be sure that his property doesn't burn down. Sure, you can do simple work ...
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7 votes

How can I measure the actual amperage rating of my circuits so I can match it with correct fuses/breakers?

Fuses are color-coded same as breakers used to be. Blue = 15A (#14 wire) Red = 20A (#12 wire) Green = 30A (#10 wire) You might take appropriate hobby paint or nail polish and mark the area around ...
12 votes

Is THHN allowed inside cavity of the wall less than 3 feet to main panel?

Nope. Conduit used as a wiring method suitable for housing THHN, must be entirely end-to-end the entire run. There can't be gaps (especially if the metal conduit is carrying the ground instead of a ...
6 votes

How can I measure the actual amperage rating of my circuits so I can match it with correct fuses/breakers?

The breakers are to protect the wiring, not the load. You can generally size by the wire size example for 60C rated wire: AWG 14=15 amps, AWG 12 = 20 Amps, AWG 10 = 30 Amps. It is dependent also on ...
  • 4,083
4 votes

Why is my ceiling light permanently dim?

Harper's Law of Seemingly Unrelated Problems says that if you are chasing a problem A which is vexing, and in the course of that see a seemingly unrelated problem B, correct problem B. Either problem ...

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