Questions tagged [electrical]

Distribution and use of electricity throughout the home. Electrical standards vary greatly worldwide, so you need to provide your location in your question or profile to 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.

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How to daisy chain three lights with a (former) white wire that is now hot

I'm looking for some input on how to "daisy-chain' wire my three canless puck lights (with Wago connectors and portable J-box) in my bathroom ceiling. I asked a question about this yesterday but ...
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2 votes
0 answers
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Electrical wiring confusion for three bathroom lights daisy-chained to a three-way switch

Not sure where to ask this question. I would like some input if possible. I had three puck lights daisy-chained on my bathroom ceiling. Because we're under construction I had these in place ...
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1 answer
95 views

Can a 20 amp circuit and a 15 amp circuit in plastic box share a ground

I have a plastic switch box with two circuits going to it. One circuit is 15 amp which is a 3 way switch and another 2 way switch to control a different light. The other circuit is a 20 amp circuit ...
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62 views

Outdoor load center

I'm planning to install a 8 space 16 cct outdoor load center for pool equipment. Does it have to be feed from a GFCI breaker in the house and if so does that mean I don't have to have any GFCI ...
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1 vote
3 answers
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Remove Zone from hot water radiant heating system

I want to remove a zone from my hot water heating system. The zone has an an electric zone valve wired to my panel and to the thermostat. When set the thermostat to turn up the heat, it closes a ...
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1 answer
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Splitting up electrical lines to kitchen

I am beginning to renovate my kitchen and have a pair of 30 A breakers for the electric oven, and a pair for the electric stove. I am going to install gas stove and gas oven. I wanted to use one pair ...
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14 votes
5 answers
4k views

Old house, 2 prong outlets - safety question for kids

I just bought a 1955 house with 95% of the outlets 2 prong ungrounded. There seems to be one grounded 3 prong outlet in each room. I reached out to my electrician for a quote to add grounds to all ...
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Hooking up 50 amp box

I have a 200 amp meter base mounted on a wood 'pole' with a cross 2x10 on it next to it i have a 200 disconnect that will eventually feed a 200 amp breaker box . But until that time can I run a ...
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2 votes
1 answer
68 views

Grounding Main Sub-panel Sub sub-panel

I have a 200A main panel installed in our garage on an exterior block wall (single family, residential, construction in 1980). A sub-panel was added next to the main panel supply via a 100A breaker (...
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10 votes
3 answers
2k views

How to use multimeter probes overhead?

If I have to do some testing in an overhead electrical box with a multimeter, it is very hard to keep hands still enough to maintain the tips of probes on the wire because you are holding them ...
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1 answer
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Can power switch type be incompatible with controlled unit?

Soon after I replaced my plain vanilla (most regular lever) switch with this old-fashioned looking push button switch to control my ceiling fan, the fan broke. Could it be that there is something ...
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1 vote
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Multiple fused spurs

I have a double socket, and I'd somehow like to power two extra fused switches. I think the double socket is connected to the ring main, and I believe there's an existing fused spur switch coming off ...
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1 answer
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Making good a newly chased backbox

This is my first attempt at chasing out a backbox for a socket / switch. Unfortunately, it looks a bit rubbish. Unfortunately the switch is the same size as the back box. If it'd been slightly bigger ...
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1 answer
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Stove turns on some of my power (partial power outage)

I was cooking, having all the ACs on and washing clothes and someone of the power in my house turned off and hasn’t turned on. But when I turn on the stove some lights turn back on. Is this bad and ...
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1 answer
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Is 106volts and 109volts too coming from transformer?

My main legs coming from my transformer reading 106 and the other one reading 109 instead of the 110 that's supposed to be would that make my water pump not come on?
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2 answers
143 views

Girlfriend changed light switches, lights flashed and now the lights won't turn on

Okay, so pretty simple. She replaced two 3 way switches and a 4 way switch. The switch was flipped and the lights turned on and then went out immediately and now won't come back on (there was a ...
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25 votes
2 answers
5k views

The main ground on my house sparks when an appliance is turned on

When turning on high amp appliances like an air compressor or dust fan, the attachment of the ground from the meter box to the water main (pic) sparks occasionally for a second or so. A separate ...
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is there an adapter to convert this receptacle to a regular 3 prong outlet?

This is in the United States. Electrician came out for something else and said these were on their own breaker, probably heaters at one point, still connected and live. I forgot to ask him if we can ...
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1 vote
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Switch to two half hots - not working - help!

Here is a diagram of my current wiring. I cannot get the half hots to work with the switch, pretty sure it's user/DIYer error. I do not know how wired within the conduit, just what's sticking out in ...
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0 votes
1 answer
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regular oven conversion to support convection [closed]

Preface: I thought about posting this on the Seasoned Advice (Cooking) SE network but concluded that the engineering/architectural aspects of this topic and question justified placement here. I'm open ...
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3 votes
3 answers
378 views

Do I need PVC expansion coupling with a 130F temp range but very short run?

I am doing a very short run of a 2 inch PVC conduit on an external, west-facing, brick wall. The conduit exits the panel horizontally, travels 28 inches, turns 90 degrees south and travels 36 inches ...
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0 votes
2 answers
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Pool pump keeps tripping breaker

I installed a new pool pump today, only to find out that when it runs - it draws around 25-28A causing the breaker to trip. The power rating on the motor is only 13A. What is going on?
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3 votes
2 answers
491 views

How to determine fill limits when using different gauge wires

I'm installing the wiring for a mini-split system which requires 8 ga (40 amp) wire. There is an existing conduit for a dedicated circuit (12ga) for an over the stove microwave. It's mounted on an ...
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3 votes
3 answers
690 views

Is my non-standard outlet box grounding screw code-compliant? (US in 2022)

I'm installing GFCI outlets in my 1950s era existing kitchen counter wall boxes. The metal boxes in the wall have a number of holes in them that I thought were for standard green grounding screws, but ...
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4 votes
2 answers
144 views

Anything missing from my panel install?

First sub panel install. Anything I can improve on before calling for my rough-in inspection? Only thing I’m not sure of (and aware of) is that I’m using the panel as the ground between the second and ...
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0 votes
2 answers
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How do I install lights in the ceiling with only red/black wire pairs?

I want to install some lights on my apartment ceiling, and took off the conduit box panel expecting to see hot neutral and Ground wires. Instead I found these six wires. Black and red only without any ...
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0 votes
0 answers
60 views

SER 4 wires from meter to main panel

I’m installing a 200amp service to my shop. Here’s the layout: meter socket (no disconnect) back to back with 200 amp main breaker panel. I went to a local electrical supply house told them what I was ...
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2 votes
2 answers
237 views

Replacing single duplex outlet on MWBC with two of them in kitchen?

My kitchen has a single duplex outlet (so two devices can be plugged in) on a multiwire branch circuit. I'd like to tear that out, replace it with a larger box and install two GFCI duplex outlets. ...
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0 votes
1 answer
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Replacing outlet with GFCI outlet, preexisting GFCI outlet quit working

I replaced an outlet with Line & Load wires in Rm-A with a GFCI outlet. The new outlet won't RESET and a preexisting GFCI outlet with Line wires only in Rm-B quit working. Each outlet is on a ...
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2 votes
2 answers
182 views

No power in an unused 240v line

I am a newbie, so please bear with me a little. I have two circuits coming from the electrical panel that are 240v each, into my kitchen. One of those is used by a microwave/oven combo and is working. ...
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0 votes
1 answer
88 views

Conduit fill for (slotted) wire ducts?

Table 1 of chapter 9 of the National Electrical Code (of the US) allows us to use up to 53%, 31% or 40% (and 60% in some cases) of the cross-sectional area of a conduit or tubing (EMT, PVC, etc.), ...
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1 vote
1 answer
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Help with installing Google Nest thermostat

I have a Google Nest I want to install and I saw there was an unhooked blue wire at both ends, so no big deal right? Wrong, apparently. What the heck? We have a Climatrol 170-1-080-02-00 furnace and a ...
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1 vote
2 answers
59 views

Spa wiring from Main Panel through attic or exterior

We are moving our Spa (50 AMP 240v) to our new home. Currently it is wired to a spa panel via PVC conduit to an extra breaker in the meter combo as there was room for a breaker. The new home has a ...
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1 vote
1 answer
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Smoke Detector Turns on Randomly: After removing Popcorn ceiling and repainting

I removed the popcorn ceiling and repainted the ceilings at my place. The drywall contractors forgot to cover the smoke detector. Obviously there was popcorn ceiling leftover, dust, slight moisture. ...
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2 votes
1 answer
50 views

How to “aim” RF remote control for LED RGBW lights

I recently purchased a set of outdoor RGBW LED spotlights that came with a remote control to configure the color settings for each light. With all the lights on, it is hard to change the color of only ...
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0 votes
1 answer
56 views

Jump a new outlet from 3-way switch [duplicate]

I have a Lutron DVCL-153P Dimmer 3-Way Switch for my ceiling. From the switch, I want to jump out to create a new outlet. This is the picture of BEFORE and AFTER Here is the picture behind the switch ...
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0 votes
1 answer
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How should I clean ceiling texture out of a light box?

I had drywall contractors remove the popcorn ceiling. Everything is good, however they forgot to protect/cover one of the ceiling lights when opening it. Now there is some popcorn ceiling leftover, ...
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0 votes
0 answers
82 views

How many circuits can I add to a 50 amp subpanel?

I’m working with a sub panel that is rated up to 125 amp max. Currently it is wired with 6 gauge and has a 50 amp breaker in the main. How much more load can I put on the sub panel or how many more ...
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0 votes
1 answer
49 views

Use existing 3-way switched receptacle to toggle power to a timed pump

I have an existing 15 amp hot-water recirculation pump that's powered by a 3-way switched receptacle. Toggling one of the two 3-way switches either turns on or off the pump. My goal is to be able to ...
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0 votes
2 answers
109 views

Is my sub panel stealing power from my main

In a main panel I know if you use too much power at once you can over load the main panel, but I was wanted to know if the breaker in a main panel that you would use for a sub panel if it could be ...
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1 vote
2 answers
65 views

3-way switch wiring for home built in 1975

I am a bit confused by the wiring of the 3-way switches in my mid-1970s home. Upstairs I have a two-gang box where the right switch has a white traveler atop a red traveler. Both are wired to bronze ...
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3 votes
3 answers
768 views

How to connect schedule 40 PVC conduit to an outdoor metal enclosure/panel?

Assuming that the outdoor metal enclosure only has knockouts for connections. If I were using flex conduit I could use a Liquidtight connector: And if I were installing this indoors I could use a ...
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2 votes
2 answers
84 views

One leg voltage loss to sub panel

I have a sub panel about 200’ from my main that is fed by MHF buried, not in conduit. The sub panel just runs my well pump at 220v 10a and a 120v outlet. Everything worked fine for a month and then ...
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4 votes
1 answer
307 views

Black/black/black/green wires to black/red/white/green - how to figure which one to which?

There is a line for a hot tub that I am trying to reconnect. Hot tub side has black, red, white and green wires. Power supply side has three black and one green wires. The green was previously ...
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0 votes
1 answer
63 views

Direct burial wire out and back in same trench

I’m planning on running 2-2-2-4 aluminum direct burial wire 30’ to a 100 amp sub panel, then another 250’ to a 50amp sub panel. The 50’ portion will be in the same trench. So it will basically go out ...
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0 votes
1 answer
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Loose plug socket, is it safe to tighten outer screws

sorry probably a stupid question but the front of my plug socket has come loose from the back box, is it safe to just tighten the outer screws? It's a UK plug socket with 2 outlets and the loose ...
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7 votes
3 answers
937 views

How reasonable is it to do a panel swap with only one trip from the power company?

This question comes from my comment on this answer regarding a full panel replacement. As someone who works in IT, and has a general distrust of "soft" safety features and many "smart&...
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0 votes
1 answer
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Install rectangular bracket on small 3" round junction box

I am trying to install 6 new wall lights. The old lights had a standard round bracket, but the new lights have a rectangular bracket (see photo) with holes that are not really designed to line up with ...
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1 vote
1 answer
24 views

Light + Fan control + 3-way = outlet having power that shouldn't

I've added a ceiling fan with separate switches for light and fan control. There's a 3-way switch that controls a couple outlets, I'm using the constant power that feeds this switch to power the other ...
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0 votes
3 answers
90 views

Why are 2 pole 240 volt circuits allowed to use 12/2 Romex?

I was under the impression that 2 pole circuits that feed 240 volts are always wired with 12/3 wire (2 hots, one neutral and one ground). With this wire, the two hots attach to the two lugs on the ...
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