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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Can I mount a manual transfer Switch here?

I am planning to install a Reliance Controls Manual Transfer Switch, model R510A on the side of my house next to my electrical panel. The transfer switch is 13x12x5". I am planning to install ...
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1 vote
1 answer
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What is correct mud ring size for ceramic tile?

With a square box installed flush with studs, 5/8 cement board and ceramic tile if I want the mud ring perfectly flush, should I use a 3/4 inch one?
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1 answer
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Running extension cables through accessible channel in floor

Here's my scenario: I'm currently re-doing a floor, and have been asked if it's possible to cut a channel for running extension cables for computer equipment, as well as some low-voltage devices. The ...
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5 votes
2 answers
1k views

Where to land ground in main panel

If one were to add a new branch circuit to this panel and didn’t want to use metal conduit, where would you land your ground wire to? Would you need to add a grounding location to the panel?
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1 answer
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Top and bottom of outlet sparking when plugging in charger

I recently replaced some older receptacles with these: https://www.amazon.com/dp/B07JC1SZD9 One of the outlets sparks when I plug something into it, such as a battery charger. Now it's not like I ...
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1 vote
2 answers
61 views

How to troubleshoot vent fan electrical outlet?

This post is continuation of my other post How can I remove stripped screws in a bathroom exhaust fan motor bracket?. I was able to successfully remove vent fan and test in a regular outlet and it is ...
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1 answer
44 views

Split 240V Generator powering 2x GFCI 120V receptacles

Standalone application I have a 4 wire 240V Generator going to a 2pole 120/240V rated breaker, One pole feeds Line side Hot of #1 GFCI Other pole feeds Line side Hot of #2 GFCI The wiring between ...
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0 votes
2 answers
60 views

Changing Tandem Breakers with Potential Unmarked MWBC

I have two adjacent 20A tandem breakers in my panel. I need to change one of the breakers on each tandem to 15A (in order to protect 14 gauge wires on the respective circuits). The possibility exists ...
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2 votes
2 answers
134 views

How to support 2 inch SCH80 PVC conduit on exterior brick wall?

I am installing a 2 inch SCH 80 PVC conduit for a 15 feet run on a brick veneer wall. The conduit exits main service panel at a knockout 45 inches from the ground, travels 11 feet horizontally, takes ...
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8 votes
1 answer
2k views

What is this spiral-textured pipe in wall cabinet?

I’m helping with parents' kitchen remodeling and will take down my vent hood cabinet and do away with it. I just want vent hood straight up to ceiling for a clean modern look. But when I look inside ...
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3 votes
1 answer
308 views

Trying to Find Compatible 15A Tandem Breaker for Older Electrical Panel

I need to replace a 20A tandem breaker with a 15A tandem in order to protect 14 gauge wiring on two circuits in my home. The circuits are in the bedrooms and family room, respectively, (no kitchen, ...
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2 votes
1 answer
51 views

Can I use AFCI/GFCI outdoors

I am getting ready to install a 20 amp breaker powering my outdoor lights, outlets, and some shed outlets. I am most likely going to just have the breaker be a GFCI breaker to have the entire outdoor ...
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3 votes
1 answer
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What size extension cord do I need to reach 200’ from the house to run 15A tools?

I need to work out in the woods (building a treehouse) with up to 15 Amp tools about 200 feet from the house. Obviously I should be using battery tools, but all of my tools are wired and I’d rather ...
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-1 votes
1 answer
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Pool water heater wiring

I want to plug my water heater. I have a 240 #10 wire, plugged on a double 30AMP breaker. My wiring, cable and breaker are all OK. But when I opened the box on the heater, I found 5 plugs: L1, L2, ...
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6 votes
1 answer
1k views

Random buzzing/humming in bottom corner of Living Room…not electric?

Just within the past few days, an annoying humming/buzzing has been occurring on the bottom corner wall of our living room. I immediately thought it was electrical in nature. After trying a few things,...
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0 votes
1 answer
47 views

Installing new light fixture with too many wires

So I have 5 wires coming out of the ceiling two coming form one side three from the other there is a switch to this light which wires get put together to wire into a new fixture with white black and ...
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3 votes
2 answers
188 views

Hang ceiling fan grounded box but no ground wire

I'm trying to hang a ceiling fan and connect the ground wire from the mounting plate but I don't have any ground wire coming from my box. I have verified that the box itself is grounded though by ...
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-1 votes
2 answers
49 views

Can I turn my two switches which control one light into motion sensor switches? [closed]

I have a stairway light with a switch at the top and bottom. Often my hands are full bringing stuff up and down, so I’d like to install a motion activated smart switch at the top and bottom. Would ...
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Do I need a junction box to direct-wire these 4' LED lamps?

I bought these Barrina 4' LED T8-form-factor lamps off of Amazon. I plan on installing them in our basement by attaching them to bare joists and wiring them to a new 15A circuit. They include a little ...
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0 votes
1 answer
64 views

Can you put a 3500W element in a 4500W water heater to run a 20 amp breaker on 12/2 wire?

I have an A. O. Smith 40 gallon 4500W. Can I change the element to 3500W to run it on a double 20 with 12/2 wire?
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1 vote
1 answer
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Light fixture connected to 3-way switch without neutral

I've just discovered what looks like some crazy wiring. Our basement staircase has a light at the top of the stairs and a light at the bottom, as well as 3-way switches at both the top and the bottom. ...
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9 votes
4 answers
940 views

Best way to cover exposed THHN cables where conduit has been pulled out

There's a set of exposed THHN cables before they enter a junction box below my home's load center. The wires are currently capped so I wanted to know what the risk was of having this gap when/if the ...
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2 votes
2 answers
77 views

30 amp extension cord with 15 amp outlets

I have a 30 amp RV outlet in my garage that I want to use to power a couple of 10 amp battery chargers. The battery chargers have 15 amp plugs. I'm thinking of getting a 10 gauge copper cable, ...
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12 votes
2 answers
2k views

What is this electrical box next to the switchboard?

Black wire is coming from a hole to the brick wall so possibly outside. It looks like it’s falling apart and attached beside the main circuit breaker panel for the house. No idea what it is.
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0 votes
1 answer
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Running 2/0 Individual feeder wires through a mix of SCH40 PVC and LiquidTight Flexible Conduit

I need to run a feeder cable (3 individual 2/0 Al for HOT/NEU and one 6AWG Cu for ground) from an external main panel to a subpanel inside the house. The wires need to enter the crawl space before ...
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0 votes
1 answer
66 views

How do I fasten NM cable to a concrete wall?

I have a finished basement with some concrete walls, and romex running along the wall (which will be behind drywall). How can I fasten the NM cable to the concrete to support it? It is not running ...
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1 vote
3 answers
81 views

Which circuit breakers should I purchase: Standard, AFCI, GFCI, Dual Function (AFCI/GFCI)

I understand the need to have GFCI outlets in areas such as the kitchen and bathrooms, but when I was upgrading my electrical panel, I saw there are multiple options for circuit breakers. The ...
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4 votes
2 answers
314 views

Alternatives to running a single Neutral wire?

I have a switch box with two switches. I'd like to replace one of them - a single-way switch controlling a light in the hallway (which is controlled by no other switches) - with a smart switch. The ...
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0 votes
0 answers
91 views

Portable Generator with Manual Transfer Switch Troubleshooting

When I hook up a generator to my house via a transfer switch it does one of the following: Trips the main breaker on the generator immediately. It does this when the generator is neutral bonded. Or, ...
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1 vote
2 answers
72 views

Did my LED luminaire fail because of an underpowered driver?

My LED luminaire has recently stopped working. First it started flickering, then stopped altogether, so that instead of the proper amount of light I get an extremely faint glow. Taking it apart, here ...
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0 votes
2 answers
154 views

How do I plug in a grounded device when the ground pin has broken off?

I just bought a 15,000 BTU window AC unit. The plug is supposed to be 3 prong, but it was broken when I took it out of the packaging. The 3rd prong was missing and looks to have been snapped off. Can ...
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0 votes
0 answers
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Would RGB LED strip lights interfere with Ethernet cables [duplicate]

I've read that you shouldn't run your ethernet cables next to your homes power cables because there will be some interference due to the different voltages and magnetic field. Would this also apply if ...
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2 votes
1 answer
195 views

How tight is too tight for wire staples?

For all things electrical I'd been taught that you want to make sure things are tight, and that problems generally come from something be loose - a loose opening into a box, a loose connection to a ...
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-1 votes
1 answer
171 views

Where should I add connection for garage subpanel with two 200amp service panels?

Here my meter Which feeds into this panel inside Then into these two Meter also feeds into this panel outside Which appears to feed into this panel inside Somewhere in that mix there's also ...
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0 votes
1 answer
104 views

Could this have been the cause of power issues I was having?

Based on comments/answer to my previous question, I cleaned the box up some, tightened all screws (no torque specs to be found) so I tightened to satisfaction. I also noticed the wire on lower left ...
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1 vote
2 answers
99 views

Is this ceiling fan wiring code legal?

When I installed ceiling fans many years ago, I wired separate switches for the fan and lights. Instead of using one run of 14/3, I used two runs of 14/2 NM-B cable. At the switch, a single supply ...
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1 vote
1 answer
56 views

How to measure current draw of AC condenser fan motor, single phase?

This question is a follow-up from a related question about an AC tech recommending a likely unnecessary fan motor replacement. See Rust on outdoor ac fan motor? Tech recommends replacement? I'm trying ...
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1 vote
0 answers
83 views

Electrical main disconnect problems

I will apologize now for my lack of grammar and terrible writing style I never learned in school so you will have to please bear with me I will try my best to explain it so maybe you can understand ...
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0 votes
0 answers
92 views

How to make exposed wire safe

I live in Canada, and recently removed an old dishwasher. There was a power cord that I snipped, and was wondering how I could make it safe? Could this be a potential fire hazard if left as is?
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2 votes
2 answers
130 views

(Up to) 35 Amp Load on 10 Gauge Wire?

I'm looking to connect an electric pottery kiln to an existing subpanel that is serviced by a 10/4 copper line and want to understand if the wire can acceptably tolerate the load. The wire (installed ...
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0 votes
1 answer
53 views

My light in bedroom isn’t working [closed]

So my light recently went out so obviously checked bulbs and then Bought a new led fixture which worked fine but then it stopped working as well so wiring it I notice the light will light up but only ...
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0 votes
0 answers
37 views

From Honeywell to Google Nest... not cooling?

I recently changed my thermostat from an old Honeywell 7-day to a Google Nest. I'm an idiot cause I didn't take a photo before replacing it. now, I feel the air is not cool, just air/fan. The NEst is ...
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0 votes
0 answers
54 views

Smart 3-way dimmer switch cuts off at full brightness with incandescent bulbs - won't work with LED bulbs?

I installed TREATLIFE smart switches and dimmers throughout our entire home and there is only one 3-way dimmer switch that just won't seem to properly function. These smart switches are from Amazon (...
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0 votes
2 answers
84 views

Why does my ceiling light fitting has 2 of every wire

I took my old strip light out and didnt properly look at lay out,now ready to put new light up it has 2 brown wires, 2 copper and 2 blue wires. Would all these go into same terminal on new light ...
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0 votes
0 answers
32 views

Choosing Where to Place Forced Air Wall Heaters

I have a small home ~800 sq ft in a mountain climate that gets quite cold in the winters (10s-20s F in the day in the winter). I already have a pellet stove but the other existing heat comes from two ...
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0 votes
2 answers
58 views

GFCI Circuit Breaker won't reset after construction

I had my garage slab removed and during the jackhammering phase, a GFCI circuit breaker tripped and would not reset (It would immediately trip when I turned it back on). I replaced the breaker with a ...
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0 votes
1 answer
38 views

I have a ded circ for my fridge with 2 neutrals attached to the receptacle. 1 of the neutrals is shared with 2 other cir. Can I remove the shared?

I have 3 circuits - 2 20 amp and 1 15 amp. 1 20 amp is dedicated to the Fridge and the receptacle for the fridge has the hot from the panel terminated at the receptacle and also has a neutral from ...
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3 votes
2 answers
157 views

Should I terminate individual conductors exiting conduit or run all the way between panels?

I need to make a run from my detached garage to my house. The run exits the garage by way of an LB, runs underground for 25ft in 1 1/4" Schedule 40, then enters the house through another LB. From ...
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4 votes
2 answers
103 views

200A Meter Socket Ground / Bonding Strap

I'm replacing a meter socket (upgrading to 200A) operating under NEC2017, and saw something I didn't see on the old socket. Current setup - a 200A capable main panel, with 4ga stranded wire coming out ...
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  • 503
2 votes
2 answers
93 views

Large Kitchen Island Outlets

My island for my kitchen measures 144” x 50”. I will have outlets on each end in the waterfall edge. I was reading that I will need an outlet at every 48”. Do I have to put two outlets on top of ...
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