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.

976 questions with no upvoted or accepted answers
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382 views

Why is one mounting screw left behind each electrical panel's cover?

I have three electrical panels in the house and with each one, one of the face screws is under the cover as seen in the picture. So it's clearly intentional. What's the purpose of it?
4
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2answers
224 views

Why does my light box have 2 cables for this one switch?

Took down a ceiling fixture and discovered what looks like a possible switch loop, except I don’t understand how the connection gets completed with the current set up. Basically, 2 lines coming into ...
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4answers
892 views

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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2answers
4k views

Wiring in a bath heater,vent, fan combo with power source coming from ceiling

I have 3 cables coming in from the ceiling, with one being the supply. At the switch box I have 2 cables with neither being hot. In the switch box I have a black/white and another set being black/...
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0answers
44 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
74 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
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1answer
378 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
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1answer
179 views

Can Someone Help Me Identify This Switch?

I have a Swaby 5200 pump in my home, and I am hoping that someone out there might be able to suggest a replacement switch part number – or at least point me in the right direction. Pump model: 5200 ...
3
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1answer
1k 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. ...
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3answers
2k 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
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3answers
2k views

What's the “correct” way to install LED drivers for accent lighting?

I want to install LED strip lighting behind crown molding in my office. In my particular install, I'm using 3 strips of SMD 5050 RGBW LEDs, which draw about 72 W per strip. From what I can gather, ...
3
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1answer
199 views

Did I replace receptacle with exact same configuration?

I recently changed a few receptacles and am seeking confirmation that I duplicated functionality in one particular receptacle. This receptacle is in the middle of a circuit. It had 2 screws for ...
3
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2answers
202 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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1answer
246 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
111 views

Garden light connected to main lounge light stopped working

I have recently moved into a new property and all light fittings came with no shaders/were pretty basic. I have then proceeded to (safely) remove the light fitting of the living room, replaced it with ...
3
votes
1answer
295 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
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2answers
2k 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
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1answer
2k 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
406 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 ...
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4answers
1k 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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1answer
38 views

Replacing 3-way Dimmer with Smart Dimmer

I'm trying to replace a 3-way dimmer set-up (currently a Lutron MACL-153M) with a smart dimmer. I have C by GE Smart Dimmers. After a lot of tinkering yesterday, I was unable to get it to work. I've ...
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0answers
62 views

120v breaker, 240v output

I am a pool service guy and a couple times i have stumbled across this, and always told the customer to contact a licensed electrician to resolve the situation. Breaker at the box that controls the ...
2
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1answer
84 views

remedying ceiling fan horror-show

In the course of doing some other work, I came across this poor installation of a ceiling fan. This was done when my house was originally wired by "professional" electricians, and presumably ...
2
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2answers
85 views

Repairing a broken screw hole (gap) on a metal junction ceiling box?

One of the screw holes on a junction box on my ceiling has fallen apart, leaving a hole that is too big to fix a screw into (see top of picture). As a result, I cannot hang my smoke detector from the ...
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0answers
50 views

Can I use an outside feeder tap to run power to a garage?

I have a newly built garage that I would like to add a sub panel. I have a QO load center QOB8-16L 100S which is rated for 100 amps. However, I think 60 amps would be more than adequate for my needs ...
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0answers
41 views

Extend/splice 12/2 romex along concrete finished wall

I would like to extend some wiring for a counter outlet that is running behind a refrigerator, which currently encased in a metal "cable concealer" raceway. Note: wiring is in a raceway because most ...
2
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0answers
46 views

How do I connect surface wireway to a breaker box?

I am running Legrand/Wiremold 4000 series for a garage shop. The instructions for the panel connector (4086A) consist of a tiny picture that implies all I need to do is cut a large square hole in my ...
2
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0answers
49 views

In Wall Panel for Security System and Camera Cabling

I'm in the process of overhauling my home network and installing some door and motion sensors. I'd like to drop everything down into the Master bedroom, where I will install a panel that is set in the ...
2
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0answers
36 views

Thermostat wiring for ac

I recently installed a nest thermostat for our AC system. Unfortunately I was short sighted and just assumed all the wires were the color I needed. Since installing the thermostat our system won’t ...
2
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0answers
108 views

When running crawl space conduit, must the conduit be run through the joist via drilled holes, or can they be attached underneath?

I'm wiring my home for 110V and cat6e(48-0V). There is currently no wiring, just an air tight shell with interior studs exposed. There is a crawl space where I would like to run all of the conduit ...
2
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2answers
135 views

Can I feed a sub panel off my 200A service box? Or would I need to run wire from the inside breaker box?

Can I add a sub panel feed off my 200A service box? If so what are the requirements? Or would I need to run it from the main house breaker inside the house and wire from there? I currently have a ...
2
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1answer
166 views

Outdoor 50 amp 4-wire Outlet Install

I want to install an outlet for outdoor connection of an RV. However, the location of the service entrance box is close to a inside corner of the exterior of the house so the easiest location is on ...
2
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1answer
132 views

Black paste inside wire nuts?

I have read that older houses may have aluminum wiring, and to splice copper to it there is a less than desirable method of purple wire nuts using corrosion inhibitor paste. My house was built in ...
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0answers
92 views

Junction Box Blank Cover in HVAC Duct

I am starting a bathroom remodel second story that requires a length of NM wire to be lengthened by a few feet. I realize I can't do this hidden in a wall or floor and need this done in accessible ...
2
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0answers
53 views

Can I split a large amp 240 circuit into two lower amp 240 circuits?

I just bought a house. It has a double oven unit installed on a 50 amp 240V circuit. I need to replace this unit with two separate units, one 30 amp, 240V and the other 20 amp, 240V. Can I split ...
2
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1answer
207 views

Switches in other bedrooms turning on different lights after I put new light up

I recently put up a light in my bedroom but the switches in other rooms now turn on different lights, there are 9 wires altogether coming through the ceiling, 3 earth which are connected together, 3 ...
2
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0answers
21 views

Will the existing wiring work with the new thermostat?

I am looking to upgrade my line voltage thermostat from a Dimplex mechanical thermostat to a Honeywell digital thermostat. Both thermostat has 2 wires on its back. Would the new thermostat work if I ...
2
votes
2answers
83 views

What type cable and size should I use for my shop?

My existing overhead wire is triplex 1/0, 2 insulated and one bare. The power company is out of the picture because they do not provide service to a customer supplied pole. My existing wire is at ...
2
votes
1answer
61 views

Figuring out electrical connections for THREE electric baseboard heaters with single pole thermostats

I recently purchased a home (triplex) and in the basement unit, which is a one bedroom apartment, there are three baseboard heaters (bedroom, washroom, and living room). The issue is that the living ...
2
votes
1answer
69 views

Solar panel as a hatch and Is sleeping under a solar panel safe?

I'm looking to build a very large custom roof hatch/vent on my van. I was going to make to top out of Lexan, but then I realized I might want a large solar panel on the roof as well. I was looking at ...
2
votes
1answer
146 views

What size sub-panel and wire do I need for my three-season room?

I have a 15x22 room that is roughly 50' from the main panel, that I am converting from a 3 season room, into a conditioned space (heating and cooling, enclosed with windows and doors, etc.). ...
2
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0answers
542 views

Can I bypass an old fuse box and connect the service directly to the breaker panel?

We have an older home with a fuse box in house and also breaker box outside. This is second time now in last couple weeks that all the main house overhead lights and outlets have gone out completely. ...
2
votes
1answer
180 views

How to handle frayed/old wire in can light

We have some can lights in our house that have been out since we purchased it. I finally took the time to replace them (they are on a vaulted ceiling). I found some exposed wire as I was going along ...
2
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0answers
208 views

Protect electrical wiring between drywall and brick fireplace

Following the question at Frame drywall around brick fireplace I would like to figure out how to protect the electrical wiring and other wirings (HDMI) from the top down in middle of the fireplace as ...
2
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1answer
134 views

Do I need to upgrade my panel?

So I went to look at my father in law’s panel, and as far as I can see, they look like they’re trying to draw too much amperage from the panel. Does anything look amiss here?
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0answers
352 views

3-Way Switch won't turn on lights if dimmer is set to low

I just added 5 dimmable recessed lights to my living room. I'm certain it's powered correctly. Incoming power hits the 3-way dimmer switch. Both traveler wires head to the other 3 way switch (non-...
2
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0answers
1k views

How do you release the wires from this Slater push-in connector?

I know you are supposed to be able to push a screwdriver into a slot "under" the wire, but this old (late '70s?) Slater light switch has different slots than I see in all the examples. They are more ...
2
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0answers
42 views

Connecting network gear directly to electrical line

I’m installing multiple PoE networking switches on a pier, but I’m not sure the best route for plugging them in. There are only a few existing plugs on the dock but they aren’t located near where ...
2
votes
1answer
53 views

Turning on any high-power device trips my RCD

Today I turned on my water boiler, and all the lights in my apartment turned off. I opened the electricity box and saw the RCD was tripped. I turned it back on, but then it would trip again whenever ...
2
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2answers
145 views

wiring a kitchen under counter oven - is this setup correct?

Here are the oven wiring specs: POWER / RATINGS Amp Rating at 208V: 20 Amp Rating at 240V: 20 Bake Wattage: 2100W Broiler Wattage: 3600W Convection Wattage: 2500W KW Rating at 208V: ...