Questions tagged [electrical]

Distribution and use of electricity throughout the home. Electrical standards vary greatly worldwide, so providing your location in your question or your profile helps 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.

1,272 questions with no upvoted or accepted answers
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6answers
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What is the proper way to convert a pair of three-way (SPDT) switches into a single two-way (SPST) switch?

I'm in the process of replacing some of the light switches in my house with smart switches, Wemo Light Switches in this case. I've had no problem with the replacement of my One-way switches (SPST I ...
4
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3answers
291 views

Checking ground current

Background: I had a contractor finishing my basement, and part of that was installing underfloor heating using several heating mats in parallel. It worked initially but soon after it just started ...
3
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0answers
46 views

Generator Connection

I picked up a used 10kva (45a) Generac unit and want to get it connected thru the transfer switch. Just looking for some feedback on how to get it connected. I was going to use 1" schedule 40 ...
3
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0answers
100 views

NM-B Romex going through conduit raceway to external breaker box. Not code compliant?

I recently noticed one connection in my breaker box where 12/2 Romex exits the house in a conduit and enters the breaker box. The breaker box is on the external wall of the house. I thought this was ...
3
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0answers
76 views

3 Wire SE Feeder 4 Wire Appliance

I have a 50 amp circuit wired with 6 Gauge AA-8000 Aluminum SE wire from the panel that goes to my oven/microwave combo, and then continues on to my cooktop. Both the oven/microwave combo as well as ...
3
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0answers
117 views

USA: What is a code compliant method of running 12/2 through wood ledger board and into outside junction box?

I need to run one circuit of 12/2 from the basement (ranch house) up to the attic and then outside via the ledger board of the roof over my deck. Should I screw a short nipple into the back of the ...
3
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0answers
49 views

Order of operations for getting electrical service turned on in Philadelphia

Let me start by saying I appreciate any information. Hopefully, Philly is not all that different from anywhere else, but Ideally Philadelphia specific info would be preferred. I'm remodeling a ...
3
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0answers
101 views

Bending radius for NM cable through stud

From what I understand from the NEC, bending radius for an NM cable must be at least 5x the diameter of the cable bundle (“romex”). But how do you calculate this in a real life scenario. Is the ...
3
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0answers
157 views

Switch-controlled outlet is always hot

I did NOT change any outlets, just the single pole switch that controlled the top plug of the outlets, and a 3 way switch in the same box that had no control over the outlets. I have a single pole ...
3
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0answers
62 views

How do I manage grounding when installing a metal extension on a plastic box?

I've been repairing an outlet that's not supposed to be recessed, but is, so I purchased a box extension from the local hardware store. When I tried to put it in, I realized it interferes with the ...
3
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0answers
44 views

Need help on error code for a solar power inverter

I have a solar array with 2 Sunpower/Sunnyboy inverters model SPR-6000m. One of the inverters has an error that from the manual (see pic) is "Inverter Interference". The indicator lights that blink ...
3
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0answers
117 views

Low Voltage wiring and Rough-In Inspection

Does anyone have experience, guidance, tips on what is required for LV wiring at rough-in inspection? I have run a number of speaker wires, coax, ethernet (CL2/CL3) but they do not all terminate in a ...
3
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0answers
129 views

Fried switches, light fixtures, or wire?

In an attempt to fix a wiring problem from five years ago, I made a huge error. Here's the scenario: Box 1: Has switch #1 in a four-way set up (it's a 3-way switch) and is where the power comes in. ...
3
votes
0answers
376 views

Water Heater not getting 240v?

My water heater stopped working a few days ago and I've been trouble shooting it ever since. I found water in the connection receptacle. the leak from the the Air Conditioning unit above it has been ...
3
votes
0answers
65 views

Breaker trips when both switches on circuit are on

I've got a ceiling fan/light wired to a double switch (like this: https://www.homedepot.com/p/Leviton-15-Amp-Combination-Double-Switch-White-R62-05224-2WS/202027008) The source is at the switch and ...
3
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0answers
279 views

200Amp Panel upgrade, Flush panel to Surface mount

I'm looking to get my house panel upgraded from a 100 amp FPE firestarter panel to new Square D Panel. The panel I want to use is surface mount and the one built into the house in the 1970's is flush ...
3
votes
1answer
906 views

Sub panel and ground rod installation: “high differential potential between the ground locations”

We have a dock (fixed-pier) that is about 40 feet from the house, and +100 feet from the main panel. 4-wire (2 hots, 1 grounded neutral, and 1 ground) run to a large junction box at the start of the ...
3
votes
2answers
2k views

Why my baseboard heater won’t turn with new thermostat?

I have a pair of electromod basement heater. The label on each of them show them show 750/1000W. Power supply to this is 240V I am trying to replace the old manual thermostat with a progrmabale one. ...
3
votes
3answers
5k views

How to replace a light fixture that has a 3-way light switch

Box] I have a light fixture above a stairwell. There are two live switches that control it, one at the bottom of the stairs, one at the top. The wiring is relatively new about 25 years old (all copper,...
3
votes
1answer
4k views

LiftMaster garage opener will not erase memory

Moved into a new home a couple months ago. Car was broken into on my driveway a week ago, and one of my garage door openers was stolen (along with some other things). The problem is that the opener ...
3
votes
1answer
332 views

Install recessed lights and chandelier with 3-way switches

I am remodeling my entry way and dining room to give a more open feel. Existing: 15 Amp breaker 12-2 Feed directly from the box two gang box outside of the kitchen 1 standard switch and 1 three ...
3
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1answer
469 views

Changing switch to dimmer (UK)

Right in the middle of this job and realised I don't know what I'm doing. I'm in the UK. I currently have a Crabtree switch (which I believe is called a single gang two way switch) on a light on my ...
3
votes
1answer
309 views

How do I install a SensaSwitch on a 3-way circuit?

I recently purchased a SensaSwitch, Manual-ON / Timed-OFF (PDF of instructions) and I cannot install it in such a way that it performs as I desire. I have a switch at the top of my basement stairs and ...
3
votes
2answers
3k views

How can I wire a single gang 3-way fan control and dimmer?

My client's new fan is installed on a 3-way switch above stairs. The switches are located top and bottom, on separate breakers. The fan and light are operated simultaneously. The light attachment has ...
3
votes
1answer
3k views

what could cause my gfci to randomly trip?

I'm in the process of finishing my basement, and am almost done with the electrical rough-in. The whole thing is open studs at this time, so any sort of reconfiguration is easily possible. I have a ...
3
votes
1answer
414 views

How do I troubleshoot a newly installed non-working outlet?

I recently spent several frustrating hours trying to figure out why an outlet on a new branch circuit would not power a load even though there was proper polarity at the outlet, my non-contact voltage ...
3
votes
4answers
2k views

GFCI Problem with Three-Way Switch WAS Two Switches Neutrals Only, Switched Hots Not Used

I replaced an old two-prong receptable with a three-prong GFCI (no ground) yesterday. It won't reset. I found out that "downstream" there is a light on the next level down that is controlled by two ...
2
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0answers
39 views

Light Switch Tripping Adjacent GFCI circuits

I've been having some issues with what I thought were ghost GFCI trips in my shop. The shop is a metal building, all 20a 120v outlet circuits are routed through a GFCI outlet at the start of the ...
2
votes
0answers
50 views

How to feed wire to a 400 Amp meter base?

I'm in WA. PoCo is Mason PUD #1. AHJ is WA L&I. I'm wiring up a https://www.homedepot.com/p/Milbank-400-Amp-4-Terminal-Ring-Type-Link-Bypass-Overhead-Meter-Socket-R3548-X/202504185. I'm feeding 2 @...
2
votes
0answers
36 views

Faults/current leak in an ungrounded electric setup (connected to a grounded setup)

I'm troubleshooting the wiring from our neighbor's house. His electric setup is ungrounded. Our house, pending an "official" installation, gets its electricity via a ~30M cable (3x1.5mm2) ...
2
votes
1answer
77 views

How should an unused knob and tube run be terminated?

What are the safe and compliant options for terminating an unused knob and tube branch? In this instance, insulation will be applied, so the fixtures and receptacles previously on this circuit have ...
2
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0answers
64 views

No power to entire circuit after adding a single receptacle

I was just adding a receptacle to one of my electric circuits. Once completed, I turned the circuit breaker “on”. No power on any of the receptacles and lights on that circuit. I checked every ...
2
votes
1answer
48 views

Bathroom electric issue

Good afternoon, First time here so I sincerely appreciate any help.. House background, built in 1907. Only electrical ever permitted was in late 70s. All else added etc done by previous owner was all ...
2
votes
0answers
90 views

What could have happened to the two traveler wires in previously working three way light?

The high-hat lights (retrofitted with LEDs) in kitchen stopped working. They were controlled by two three-way light switches, one a dimmer. I played around with different configurations of the ...
2
votes
1answer
75 views

I want to install a motion sensor for the stairwell

Stairwell has a switch at top and bottom with no line of sight between them. Can I use two motion sensors? It looks like what I found are single pole and can be used with one 3 way switch but not ...
2
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0answers
41 views

Is it unsafe that these outdoor switches are on a lighting circuit?

I am in the process of replacing these two outdoor switches with one double gang unit. Reason being that between the two existing units I can see non-weatherproof wiring connecting them together. (Not ...
2
votes
2answers
60 views

Distance between countertop power outlet and gas range

Is there a minimum distance between a gas range and a power outlet? My logic for concern is that a power cord close to a gas range can catch on the flames from the range. E.g. is 9" diagonal from ...
2
votes
0answers
52 views

Fix overhead electrical connection to outbuilding for NEC 2020

I have a problem like Best way to make wiring to outbuilding legal. Unfortunately, the answers there weren't specific enough to tell me how to solve my problems. I have an outbuilding that is 3' away ...
2
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0answers
53 views

Hole in wall behind and around plug socket (England, UK) – do I need an electrician to fix?

A socket in our bedroom seems to have been installed poorly in the first place. On one side, it seems quite secure – the screw is going into a rawlplug at the back that's securely anchored. But on the ...
2
votes
0answers
31 views

Wiring a fan and light in bathroom with separate switches

I would like to put switches on my light and fan in the bathroom. At present there are 2 isolators. The light one is fine--it has a twin and earth to the light so I guess that's straight forward to ...
2
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0answers
99 views

Voltage drop to water heater

A couple months ago, I replaced my water heater. For the sake of full discolsure, I replaced an AO Smith 40 gal lowboy with a Bradford-White 50 gal lowboy, but the electrical requirements were still ...
2
votes
0answers
64 views

Can I install a 240v heater/air wall unit in my garage with the existing panel and wiring?

The unit says 230/208v model. It has a 20amp plug on it. 1st question My garage panel was put in 30+ years ago. It is fed from house panel with 12 gauge wire with 2 hots. Is that too weak to add a ...
2
votes
0answers
17 views

Changing toggle switch (4 wires) to Caseta dimmer switch (3 wires)

I am changing a toggle switch 4 wires (including ground) to Caseta Dimmer 3 wires (Including ground). How do I attach the wires, please?
2
votes
1answer
97 views

Convert a Hunter Fan (with light) from a wireless remote control to two wall switches

I have a Hunter 21621 that I got for free. Based on the documentation it came with a wireless remote control and a receiver/switch (which is connected between the house wiring and the fan), but the ...
2
votes
1answer
93 views

Does code mandate outlets when windows are above the counter?

We are renovating our century home's kitchen and would like to install windows that go to the ceiling so that our marble backsplash does not have any seams in it. The thing we later realized is, if we ...
2
votes
0answers
32 views

what is the proper connection method for wire to wire connection for outdoor ground bonding

I'm putting an above ground pool in the backyard and code requires that I bury a #8 gauge wire 4-6" all around the perimeter. Then it is to be attached to the metal pool frame at 4 equidistant ...
2
votes
1answer
87 views

Can I add a service panel in the shed near a generator which powers a cabin?

I currently have a 200amp Main panel in my off-grid cabin I am building. I want to feed the panel from my generator which is about 100' in a shed. Originally my contractor a few years back buried ...
2
votes
0answers
130 views

Can i connect my solar system to the ground wire of a grid outlet?

I have solar panels on the roof (ungrounded) and an ATS to switch between solar (ungrounded) and grid power. (grounded) EDIT : Sorry, my question wasn't clear enough, I'm talking about AC. My ...
2
votes
0answers
67 views

How do I diagnose a strange interaction between adjacent switches?

This is new work, and has not previously functioned. I have three switches in a 3 gang box. 2 of these share a circuit, and have an odd interaction. The fan is connected to the box with a 3-wire which ...
2
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0answers
30 views

Bathroom light switch turns off kitchen light randomly

My kitchen and bathroom share a wall. The switches in both rooms are not set up in an intentional 3-way switch setup. If my kitchen light switch is on, turning the bathroom switch to either on or off ...

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