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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1answer
24 views

Earth wire exposed when installing outdoor security light

I have just installed an outdoor security light with a junction box I bought (weatherproof). I wired the old red source wire to the new brown, old black source wire to the new blue in the terminal ...
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1answer
131 views

Bathroom fan/light switch with outlet

I have a switch in my bathroom that controls both the fan and the light, and also has an outlet. Can I get anything that has two switches (one for the light and fan) and also not lose the outlet ...
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1answer
26 views

Help wiring 1-pole switch + USB in single outlet

I have the two products below and I need them to go in a single gang box that used to be a simple 1-pole switch. Product pages: http://www.legrand.ca/adorne/select/switches/aspd1531w8.aspx ...
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1answer
27 views

How should I wire an exterior light where there's a load bearing post in the way?

I'd like to put an exterior light fixture between my two garage doors. The spot where it "belongs" has a post made of six (!) sistered 2x4s in the wall (presumably supporting the headers for the ...
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1answer
25 views

Can I add another cable to this 3-gang electrical box?

I have a 3-gang metal (ca. 1980, three boxes with removable sides) electrical box that currently has 4 NM cables entering it; at least 3 of them are 12/3, the 4th is either 12/3 or 14/3. All four ...
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1answer
73 views

In the UK, what type of flexible conduit should I use for electrics in shed that run underground and emerge through the concrete base?

In the UK, what type of flexible conduit should I use for electrics in shed that run underground and emerge through the concrete base? I see various standards quoted such as IP66. Would this be ...
3
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2answers
948 views

3-way switch for light with fan controlled by switch built into fan. Odd wiring layout. Wiring assistance required

My electrician and I have parted ways. This has resulted in my having to finish off various projects. I have managed to get 2/3 lights operating the way they were intended. However, I am having ...
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1answer
26 views

How can I add a new light fixture off of a ceiling fan wired to two switches?

I have an existing ceiling fan rough in that is wired with 3 conductor wire to two switches, allowing the light and fan to be controlled independently. The fan that I installed however uses a ...
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1answer
22 views

USB wall outlet charger not working

By not working I mean even when installed in the simplest configuration, it does some sort of low power pulsating. It will cycle between charging and not charging a USB device every half second or so. ...
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2answers
47 views

Can you add a cable connector in knockouts in a breaker box after the wires are already in place?

A sub-panel has a cable of three 12 gauge wires for HVAC coming into the box through a big knock out hole. The HVAC people did not put a connector on the cable. Is there a connector designed to be ...
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1answer
35 views

WD 40 and oven screws

I had some oven screws that were holding my heating element that were rusted. I sprayed them with WD 40 and got the element replacement put in. I have wiped the area down. How long before I can use my ...
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2answers
954 views

How do I wire up a 4-wire dimmer switch when I only have two 2 wires from the wall?

I'm replacing (yet again) my bathroom dimmer switch. The old switch had 3 wires: 2 black and one green. The two black wires were attached to the wires coming out of the wall and the green wire was ...
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1answer
171 views

How to open old under cabinet halogen light?

How do I open this to change the bulb? It is an under cabinet 12v halogen fixture installed in 2001.
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0answers
38 views

Has this light earthed itself?

After accidentally earthing the live wire going to the outside light whilst putting a faceplate back on (patched up now), the light has stopped working. I've just been out with a multimeter to see if ...
2
votes
1answer
510 views

Why is this transformer in my garage?

I am moving into a house, and the previous owner doesn't know the answer. Up high in the corner of the garage, the drywall was cut out to install a small transformer. The input comes from a garage ...
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1answer
50 views

Replace stacked 3-way switched on separate panel circuit

I have a stacked (dual) 3-way switch controlling lighting in my home. The lights are on separate panel circuits, one for the foyer and one for the 2nd floor. The switch that is in the box (2-gang, ...
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1answer
40 views

Relay for electric oil filled heaters - does it have to be so noisy?

On a new build, (the conversion of an old stable block into a habitable annexe), our electricians installed three electric oil filled heaters which are controlled by a thermostat, which operates a ...
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1answer
27 views

Need help replacing 2 switches, fan + light

I need some help. I want to replace the 2 old switches, fan + light, by 2 Leviton decora 1 way switches. I am confused by the wires (see attached pics), especially by the black one that goes from one ...
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1answer
36 views

Backlight moving mirror in bathroom

Bathroom will have a medicine cabinet behind the mirror. Going to use wall mount sliding door hardware to make the mirror move. Will look similar to this: I would like to use some 12v LED lights on ...
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2answers
92 views

Wires barely fit in gang box, is this okay? If not, where to get deeper boxes?

What to do when the wires barely fit in the box? We got them to fit with a lot of fusing, but I'm not sure if that's okay or not. Lots of smushing down and the outlet covers don't fit flush on some. ...
2
votes
1answer
142 views

How do I connect a C wire to an Utica PEG112CDE steam boiler?

I want to upgrade my old mercury thermostat that I currently have to a newer programmable thermostat. This little DIY project is for my first late 1920's home that I recently purchased. I currently ...
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1answer
55 views

Can I use #16 duplex wire extension to a 2800 watt chop-off cutter?

Is it possible to use #16 wire as extension wire for 2800 watt cut-off machine?
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1answer
29 views

How to waterproof metalic electrical conduit entrance in concrete wall?

I have concrete garage inside the hill below house level. Electrical metal conduit runs underground and enters the garage at the top of concrete wall. It may 12"-15" below surface. See pictures. It's ...
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1answer
63 views

How to wire 240 volts fluorescent lamps

How many 240 volt fluorescent (2 X 4 recessed, 4 tubes) fixtures can I connect to a 30 amp breaker using 4 mmsq cable?
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1answer
40 views

Proper method to wire through different surfaces

I have added a 6" deep bump out with a TV and an electric fireplace in the center of a wall. There is a recepticle behind the feature wall which the tv and fireplace plug into. I am also creating a ...
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2answers
74 views

How can I determine why my lights flicker when the A/C is running?

My lights considerably flicker whenever a large load comes on in the house and it has been this way since we renovated five years ago. I am attempting to troubleshoot this now and have already ...
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1answer
177 views

Can I wiring LED light fixtures in parallel?

I have 4 120 v 20 watt LEDs. I want to put them over my desk. They are the Lusa Lighting Model #33000 (If you want to see the PDF). They come with plugs so you can plug them in separately. I want 1 ...
3
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2answers
119 views

Why is there increased dryer motor hum while powered by a generator?

We have an off grid home, solar powered 120v. While running the home on the backup generator (also charging batteries), the drum motor on the propane dryer has an increasing noise, then gets to a ...
4
votes
4answers
793 views

Plugs won't stay in wall receptacle

We bought a new house 25 years ago. The wall plug receptacles never from day one would hold a plug. Are they defective or are there springs missing that would keep them in place? Can they be adjusted ...
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2answers
29 views

spotlight is always on and switch is not working

I have a spotlight outside all the wires are tracked and in working order but the light stays on constantly .even when connected to its switch. this one is a head scratcher. I replaced the light ...
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1answer
67 views

GFCI to light not working

I put a gfci outlet in my front yard for use during christmas time for lights and such i ran it to on my front porch light so it only turns on when my front porch light is on i also added to the gfci ...
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2answers
691 views

Why won't the heat shut off in one zone?

we have a three zone baseboard hotwater furnace. a few months ago one zone would randomly stay on, we did change the thermostat we have not noticed the problem again, but in another zone we have the ...
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3answers
314 views

Why are my dimmer switches malfunctioning?

I have two dimmer switches that have started malfunctioning. They are in the same box with two other standard switches. Each controls a set of three small flood lights. There is no other way to ...
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2answers
63 views

garden network and power cables

I'm trying to bury cables for my garden. The requirements are to have 12v power for a water pump 30-40 watt (2.5 amp), network connectivity for sensors and a webcam. I want 4 stations at opposite ...
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3answers
125 views

Why does my GFI keep going off? Is it dangerous?

I have a small condo with one bathroom. There is a GFI in the kitchen and bathroom. The GFI in the bathroom trips off on a regular basis. It started slowly (like 1/week) and now it happens multiple ...
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4answers
515 views

Best way to splice together 20/22 gauge wiring?

We have some holiday lights that had wiring snipped it seems and wondering what others have done to permanently splice 22 gauge wiring (fed from 3.5V plug). Update: On one set I have soldered the ...
2
votes
1answer
3k views

Why doesn't my motion sensor light work?

I want to install a simple motion sensor (Lutron Maestro MS-OPS2) on a single pole switch in my garage. When I installed it the light would not turn off. The instructions (PDF) that come with the ...
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3answers
1k views

2-wire switch loop controlling 2 outlets - replacing with 3-wire to fix?

I am in nearly this exact situation: Can I use a switch loop to power a ceiling fan? We are trying to install a fan, but instead of having a single duplex outlet on the same wall as the switch, we ...
0
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1answer
45 views

trying to figure out corresponding breakers to outlets

I just purchased a Klein ET300 Digital Circuit Breaker finder. I tested it with known circuits so i can figure out how it works. One room in my house that I have always had problems with is not ...
2
votes
1answer
149 views

2 circuits connected in one box?

I'm swapping out outlets and this one has me stumped. This is in a room of switched outlets (top outlet is always hot, bottom is switched) so the red/black side tab on each outlet is broken off. The ...
3
votes
2answers
592 views

Why does my circuit breaker keep tripping?

Every time I switch on one specific circuit breaker, the residual-current device (RCD) switches off. I've disconnected every device that's on the group, and even took out all light bulbs, but the ...
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2answers
42 views

I am wondering can I add a new electrical connection for a gas range to this line? [duplicate]

I found the electrical line with only with one receptacle for a garbage disposal. I am wondering can I add a new electrical connection for a gas range to this line?
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3answers
64 views

Can I connect 12ga to 10ga for gas range?

I am remodeling my kitchen right now Can I use existing 10ga line which already been built and used in my house for electrical range to hook up 14 ga or 12 ga wire for my new gas range? Thanks for ...
2
votes
3answers
69 views

Can I splice grounding wires together to reach an old outlet that needs a ground?

I have a two prong outlet in my house and there is a ground wire behind it, not connected. The ground wire ends in a junction box halfway to the breaker box. Only the neutral and hot wire continue ...
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3answers
73 views

What is the neatest way to run power to Somfy motorized window blinds?

I have several Somfy RTS motorized window blinds installed. Right now they just have electric cables attached to them that could be tacked to the wall, but I'd rather have the cabling completely ...
4
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1answer
91 views

NM cable next to hot water pipe

Edit: The answer below indicates that at least in some places inspectors consider it inacceptable to attach any wiring to pipes. However, I would still like to understand why it is a bad idea. ...
7
votes
9answers
8k views

Does one need to be certified in order to do residential electrical work?

I have a Bachelor in electrical engineering, a lot of hands-on experience with electrical work, and I'm very familiar with NEC 2011 and electrical codes. Can I do residential electrical work without ...
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3answers
235 views

Is is safe to deal with wiring after only shutting off the room's fuse, but not the main switch?

I think the question title says it all: Given a distribution board in the house (220 VAC), is it enough to shut off only the room's fuses, or must one shut off the main switch for the board before ...
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2answers
41 views

Wiring to shed with two 30 amp breakers

I recently purchased a house that has two 30 amp breakers going to a shed for lights and outlets. How would I go about doing that correctly? Can I tie the two 30 amp breakers to the shed together and ...
13
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5answers
43k views

Can I backfeed a portable generator into my house's electrical system?

Is there a safe way to power my house using a portable generator? The power rating for the generator is 6kW, and I want to run my electric water heater (4.5kW) and my refrigerator (0.5kW) and possibly ...