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.

936 questions with no upvoted or accepted answers
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1answer
292 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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1answer
326 views

What kind of sound input socket is this?

I have this surround sound system at home that is very old and have these strange sound input sockets that I have never seen before. Does anyone know what kind of input socket this is?
4
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2answers
189 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 ...
4
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4answers
833 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
41 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
277 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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0answers
118 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. ...
3
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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
1k 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
177 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
votes
1answer
237 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
votes
1answer
109 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
292 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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1answer
1k views

How can I wire a bathroom light switch which has an outlet, exhaust fan, and vanity light all from same junction box?

Trying to wire the bathroom light switch, but vanity light will not come back on. There are two wires, black and red, plus a ground wire that wasn't hooked to anything originally just touching the ...
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
votes
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
402 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
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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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0answers
35 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
45 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
44 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
34 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
91 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
110 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
votes
1answer
99 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
votes
1answer
93 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 ...
2
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0answers
74 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
58 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
19 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
75 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
52 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
122 views

AFCI Trips When Stainless Steel Hoses Touch Washing Machine Cabinet. Why?

I noticed the hot water hose on my washing machine (SpeedQueen Top Loader) was corroded, so I decided to replace the hoses. I bought braided stainless steel hoses and installed them. ...
2
votes
1answer
63 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
131 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
430 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
119 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
votes
1answer
122 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?
2
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0answers
280 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
votes
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
50 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
129 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: ...
2
votes
3answers
278 views

How do I ground a new outlet that only has the black/white wires?

I am adding a new outlet but want to make sure it is correctly grounded. I have outlet A that I am going to be creating a new outlet B. I tested A and it says it is grounded and want to ground ...
2
votes
1answer
160 views

Bring portable generator in through automatic transfer switch

I currently have a portable generator, an inlet, and an interlock on the main panel to backfeed the panel. I am moving over to an automatic transfer switch with a standby generator. However, as a ...
2
votes
1answer
1k views

Installing WeMo Wi-Fi Dimmer Switch - Lights not turning on

I have attempted to install my WeMo switch; however, it does not seem to want to work. Before I contact Belkin or my superintendent, I wanted to make sure that it is WeMo that is broken, and not my ...
2
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0answers
2k views

“Open Neutral” only when load applied- my tester is confusing me

I have a 20amp circuit with a 20amp GFI and 4 more 15amp outlets after it. With nothing plugged in, they all indicate (on my 3-light tester) they are wired correctly. As soon as 1 thing is plugged ...
2
votes
1answer
2k 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 ...