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.

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7 views

Can NM cable be exposed in attic?

All the visible cables in my attic are old armored cables, thus protected from possible critters trying to chew them (I've had squirrels there before) and other forms of direct impact. As I'm doing ...
2
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3answers
59 views

How can I wire two switched outlets but power is connected at the first outlet?

I'm trying to connect a new switch and two new outlets (from switch) to an existing electric line. This new switch should turn the two new outlets on and off. However, I'd like to connect it as ...
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0answers
6 views

How to connect two dimmers

Have just moved to Germany, and have a room with a double-gang system, the lower is a rotary dimmer which controls the lights in the kitchen, the upper is a double rocker switch that simply turns ...
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7answers
47k views

Should I put a dimmer switch on a ceiling fan?

I have a ceiling fan on our bedroom's vaulted ceiling. Since we don't want 7' pull-cords, the speed is stuck at full-tilt, which is no good. The fan has separate switches on the wall for lights and ...
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1answer
16 views

Are HVAC Transformers Interchangable (if their power ratings match)

I'm troubleshooting the blower not starting in a friend's HVAC system. We think the issue is either a) a blown transformer, or b) the relay that controls the blower has blown. The next step is to ...
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3answers
54 views

Can I buy or make an adapter to hook 2 generators together to run a 220 volt welder?

Can I buy or make an adapter to connect 2 generators together to get more amps for my 220 Arc Welder?
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2answers
39 views

Noisy exhaust fan starting itself

Our bathroom exhaust fan is located on our second floor bathroom. It's the original installed in 1986. Suddenly, it started to make an unbearably loud noise upon operation. So loud that the sound ...
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1answer
25 views

Accepted electrical raceway material to residential detached garage

When exiting a home with an electrical raceway to serve a detached garage, is PVC a generally accepted (code-worthy) raceway material to use? My feeders are carrying one 20A dedicated circuit. My plan ...
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1answer
19 views

Easiest/affordable way to monitor what's using power in your home?

My electric bill seems to be unusually high. I'm trying to figure out if there is an issue somewhere (faulty wiring, someone stealing power etc) or if one of my devices is a power hog. Does anyone ...
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1answer
91 views

Electrical current felt when touching metal in my home

In my house we get a low voltage shock when you touch metal with wet hands. We had a electrician in who told us it was a problem outside our house. He said it had to do with the transformer that fed ...
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2answers
34k views

Is it okay to have an ungrounded light fixture?

I recently moved into an older home (built in 1968) and have been replacing some of the older light fixtures. We pulled down one of the lights and found that there is a ground running into the box but ...
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0answers
12 views

Both A/C air handler and outside unit won't turn on

I went to turn on my A/C for the first time this year, and nothing happened. I checked power to both the air handler and outside unit...both at getting 220v going into the boards on each. I then ...
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2answers
69 views

Electricity passes through a bulb holder, even when the switch is off

In my home, electricity passes through a bulb holder even when the switch is off. I heard that happens due to 3-way switches. Could anybody tell me if it is okay or worth worrying? Update Let me ...
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2answers
67 views

What are the potential dangers of not removing the tabs on a split receptacle?

If I feed a duplex receptacle from two separate branch circuits, I'm supposed to remove the jumper tabs between the receptacles. But what would happen if I didn't remove the tabs?
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2answers
16 views

Grounding metal box joining two BX cables without ground

If I have a metal handy box used to join two legacy BX armored cables that don't have a ground wire, do I need to ground that box like I would with NM cable by connecting the box with the NM ground? ...
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2answers
54 views

why is a service neutral grounded but not the subpanel-neutral?

I know it's code (refer to NEC 250.24(A)5 and 250.32), but I don't understand why you can't use a bonding jumper to connect the ground bus and neutral bus in the subpanel? I've been told it's because ...
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1answer
22 views

New junction box, or pigtail within receptacle?

I need to add a wall receptacle in a bedroom. (There aren't enough outlets as is.) The bedroom is on the main floor of a 1-story house, with an unfinished attic and an unfinished basement. Walls are ...
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0answers
17 views

Electrical — Open Ground on One Tester, Correct on Two Other Testers

Very Simple: I have a multi-unit building that had two separate outlets in different rooms with open ground readings on an outlet tester. Grounded each separate outlet to a nearby junction box with ...
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2answers
13k views

What type of wire should I use to feed a 70 ampere subpanel?

Finishing a basement and I need to add a subpanel. Main panel is outside. Subpanel will be in the basement. 70 Amp breaker in the main to feed the subpanel. I was thinking THHN but would this mean ...
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4answers
3k views

Is a duplex outlet's max amperage rating for each socket or the whole unit?

If you have a duplex outlet thats rated for lets say 20 amps, is the whole unit rated for 20 amps, or is each socket rated for 20 amps? Edit: So if I had a circuit that had a 40A breaker on it, could ...
3
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1answer
33k views

How do I wire two lights with a switch?

How do you wire two ceiling lights on one switch? I have installed the switch, and the two lights, but only one light is working. It is the light that the power source enters. My setup is like ...
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1answer
41 views

Is there such a thing as a backless junction box/conduit fitting?

I have a battery enclosure for a small off-grid solar installation, and I want to run the battery cables out of the enclosure to the DC breakers and inverter. I'm looking for a backless junction box ...
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3answers
29k views

How to properly ground a subpanel in detached building?

I Will be installing a subpanel in a detached garage. The subpanel will be 60 amp. The garage is about 30' from the main-panel in-house, and I will of course get an exact length before selecting the ...
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1answer
32 views

LED bulb with slow on motion detector

Can an LED bulb be used with a retarded on motion detector? Incandescent bulbs come on slowly with this type of detector to extend the lamp life. These are externally mounted on an electrical box ...
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1answer
30 views

How to wire an outdoor GFCI with two pairs, both hot?

I have an outdoor duplex outlet which was not GFCI, nor was it protected by a GFCI outlet indoors. I tried to tone the outlet to find the specific circuit, but could not, so I shut off power at the ...
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0answers
11 views

Missing Remote. How do I control this Split Type Air Conditioner?

This is a long shot, but I'm open to fun ideas (Universal Remotes? A Raspberry Pi with some shield attachments that can be programmed to speak to this thing?) I'm in a rental unit where we have an ...
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2answers
55 views

Adding a light fixture to an existing fixture

I added a new light fixture by splicing into an existing fixture. When I turn the light on, the existing light comes on, when I turn it off, the new light comes on. What have I done wrong? I want ...
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2answers
145 views

Can I use an outdoor 8/3 wire to hookup lights outdoor?

I have removed a hot tub from my house and want to know if I can use the cable for some outdoor lights. The wire is a 8 gauge 3 wire hooked up to a double pole 50 Amp breaker. It is a lot of wire ...
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0answers
53 views

AC Unit does not receive 24 volts on outside unit

My outside unit does not turn on itself, but it does work. I just did a quick repair just thinking it was the capacitor and it was only 15 dollars for a new one so I changed that out and still had the ...
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2answers
206 views

20 amp circuit breaker trips after a few minutes or sometimes hours later

The 20 amp circuit breaker that controls my man cave, my rear patio lights including a lampost, and some outlets in my back yard started tripping about two weeks ago. Currently the lights and outlets ...
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0answers
27 views

Best way to wire in a subpanel in an outbuilding?

I've been asked to help a woman add electricity to her shed/kitchenette/classroom. I went to school for commercial wiring and have not held a job as an electrician in over a year, plus I don't have my ...
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1answer
70 views

Why did I need to switch several appliances in order to power my electric stove?

This is a bit more theoretical but I am confused as to how this may have happened. I own an electric stove that is plugged into one of those large 240V sockets on the wall. Yesterday when I switched ...
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2answers
136 views

Confused about wiring outside light fixture with multiple switched wires

I am trying to replace an outside motion detector light fixture that was removed before I bought the house and the only things left were the plastic base in the eave and electrical taped wires shoved ...
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1answer
143 views

Why won't my lights stay bright with a dimmer switch?

I installed a 700W incandescent dimmer. Lights go dim after about 10 seconds when I turn on.
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2answers
57 views

How to size an earth continuity conductor?

For the line wires, I just check the maximum load current and select a conductor from the manufacturer datasheet that can support that maximum current. What about earth continuity conductor, how it ...
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3answers
616 views

Can I connect a dishwasher and an outdoor outlet on the same circuit?

I bought a "fixer upper" and I'm remolding the kitchen. The previous "hack & wack" investor added a dishwasher but to power the DW they installed an outlet box and powered that box by cutting ...
3
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1answer
5k views

Is there a specific NEC code specifying the distance between water heaters and electrical panels?

I have a condo in a large building with many identical units. Several times other owners have mentioned that the original layout of the utility room isn't up to code due to the proximity of the water ...
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2answers
31 views

DIY powder coating oven project [on hold]

looking into a diy project with my son, looking to build a powder coating oven, its pretty big 10x10, so i was told to run 8 heating elements 4 on each side, 3000w elements or up to 5000w elements. ...
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8answers
70k views

Is using 15 amp components on a 20 amp breaker against code?

I have noticed in a few different houses in Oklahoma that 20 amp breakers are used, but all of the outlets and switches only seem to be rated for 15 amps. This goes against everything I know to be ...
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2answers
91 views

Wire a 30A/15A/30A fuse box to a 4 wire 120V/240V oven

This is for a Canadian Oven being installed in Canada. Used oven came with this box. The manual is not available. The incoming line from both oven and junction are Red/White/Black/Ground. I ...
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1answer
37 views

New cooktop has aluminum wires

New cooktop has aluminum wires. Is it ok to connect those wires to the present outlet which had copper wires connecting the old cooktop? Thank you for your help
2
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1answer
49 views

13-Amp lawn mower + 10-Amp cord tripping 15-Amp breaker?

To illustrate, I have the following setup: 15-Amp breaker 100ft 16-gauge extension cord rated at 10-Amp 13-Amp corded electric Lawnmower When I make the mower work extra hard by trying to mow some ...
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0answers
15 views

Wiring Breaker for electric Hot Water Heater [duplicate]

I have a breaker panel with one 100 amp double breaker and two 60 amp double breakers. There are other slots for more breakers. Can I add a 30 amp double breaker to this panel with the correct wire 10 ...
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2answers
75 views

Dishwasher Power Cord has Two White Wires. Isn't the wide one neutral?

A contractor hooked up our dishwasher this way (see image), but I believe it's wrong. The dishwasher's hot (black) and neutral (white) wires are the ones going into each wire nut from the left side. ...
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4answers
94 views

GFCI Problem wiht 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 ...
3
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4answers
11k views

Why am I getting 50V at a light when the switch is off?

I am trying to put in a switch and a light it controls in a storage building and this is how I wired it. Click for larger view When I checked the wiring it registered 120V when the switch was on, ...
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0answers
19 views

4 white wires in original light fixture? Help! [on hold]

I'm replacing an original light fixture in my 50's era ranch with a celing fan. I've done this before, but there are 4 white wires! I connected two, and just left 2 and wrapped them in electrical ...
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2answers
134 views

How to diagnose a broken transformer?

I have a 2000w, 240 -> 120v transformer. It's a Bronson++ AVT 2000, with a continuous max wattage of 1200w, meaning if running for over 30 minutes it should be under 1200. I ran a 1500w blender on it ...
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1answer
271 views

Fan coil wiring problem with new thermostat

I'm trying to upgrade to a new line voltage thermostat. The new thermostat has many more connections, including three fan speeds. My current system has a manual fan switch on the wall so all I need ...
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2answers
454 views

Installing New T8 Ballast; need wiring diagram

I am installing a New T8 Single tube ballast to replace an older ballast. The new ballast has one black wire, one white wire, two blue and one red. The old ballast has two wires coming and going from ...