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
191 views

Can I install two GFCI receptacles on a multiwire branch circuit?

I am wondering if I'm using a 10/3 teck cable to power two 20 amp GFCI receptacles for a temporary power situation, can I use two separate single pole 20 amp breakers at the panel for each receptacle. ...
0
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1answer
130 views

Ground wire behaves weird

I never experienced this and it doesn't really make sense. I installed recessed lights(6) with the switch. I connected them all in parallel. The house uses only two wires for lights, white and black. ...
6
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2answers
216 views

Why am I measuring decreased voltage between my dryer's neutral and hot conductors?

At the outlet: 40V - red to neutral (white) 40V - black to neutral (white) 230V - red to black 110V - red to ground 110V - black to ground At the circuit breaker: 230V - red to ...
3
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1answer
330 views

New light switch has blue, black, and white wires. Wall has black, white, and ground. Can I make it work?

I bought a new light switch that is supposed to allow me to automate my lights easier. Here is what it looks like: It has blue, black, and white wires. Coming out of my wall, however, I only have a ...
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1answer
152 views

How do I add two more lights to one cirucuit. The power is supplied to the first light?

I have and old house and the light is supplied with power which then is connected to one switch. I want to add two more lights and have them run off the same switch. I connected as though the power ...
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3answers
315 views

Why would you use copper electrical conduit?

This is not "home" improvement per se, but it fits the spirit of this stack exchange. While waiting for my train I was peeking into a ceiling that had all of its slats removed for some kind of ...
2
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3answers
1k views

Can I connect to any neutral wire in the house?

I have a Belkin Wemo switch that requires a neutral wire for installation. There is no neutral in the switch box. However, there is a neutral in the electrical outlet box below it, and a path from the ...
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2answers
111 views

Bonding Ground Rod for Rooftop Antenna

I am installing a rooftop antenna on the end of my house, opposite the end where the ground rod is located. I plan to install a new 8' ground rod on the ground directly under the antenna. I need to ...
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0answers
39 views

How can I figure out why my Roomba stopped vacuuming? [closed]

I have a Roomba 500 series, which would do its little dance going through every room in my house. When it's done, however, the dustbin is always left empty! (and the floor is still dirty) I noted ...
6
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1answer
395 views

Why is my light switch leaking electricity?

I have a home built in 1950 and a laundry room added sometime in the unknown future. There is a light switch that seems to be emitting electricity according to my Fluke voltage tester. I noticed it ...
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0answers
34 views

switch wiring for garbage disposal above sink [closed]

There's no power to the plug on the switch. Their is two white wires to the bottom & green above& black across the switch which works but no wire on that side on the bottom
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3answers
487 views

Should I use a GFCI or AFCI circuit breaker with knob and tube wiring?

My American house was built in 1942, and much of the wiring is still knob-and-tube wiring (2-wire, no ground). Over the years new modern wiring has been added to the house, but we still have some KnT ...
3
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1answer
216 views

How to use LED lighting strip on ceiling?

In our living room, we have a single ceiling rose in the centre of the ceiling with a boring light fitting on it. I'd love to replace this with 4 led strips (about 2m each) running from the centre to ...
4
votes
3answers
138 views

What could be tripping multiple GFCI breakers?

I have 14 ground fault circuits split 7 on each side of my panel. I have recently had 5 or six trip on the left side and 1 or 2 on the right. It happens at all hours. It appears I have some kind of ...
6
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3answers
683 views

How can I fill gaps in wall plates on an uneven backsplash?

We're having a new house built, and the kitchen backsplash that was just installed is a tumbled stone, which looks great, but isn't a flat surface. As a result, the wall plates for electrical outlets, ...
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0answers
150 views

Why is my bedroom light not working?

I'm after some advice please. This afternoon I was replacing a ceiling light fitting with a pendant fitting in my boys new bedroom. Put the bulb in and no power. Checked the bulb and it works, ...
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1answer
106 views

Why is one half of a subpanel not working?

I have 12/3 wire running out to my garage. I have a double 20 amp breaker in main box and a subpanel with two single 20 amp breakers in the garage with black to one breaker and red to the other. The ...
2
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1answer
63 views

Trip switch goes off 50% of the time when turning off an appliance

I have my computer attached to a six plug board that has its own on/off switch. It also has a power light and an 'earth' light which both are on. When I click off the board using its own switch about ...
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0answers
61 views

circuit breaker problem after removing ceiling fan

I removed a Hunter Ceiling Fan. I went to my circuit box and turned off the power from the circuit breaker it was on. I capped the wires and then went to my circuit box to reset my circuit breaker. ...
2
votes
1answer
240 views

Why would a short cause the main breaker to trip instead of the branch circuit breaker?

In our home, we have two electrical panels. One main panel (in the basement) and a sub panel on the first floor. The lights to the kitchen on the first floor run to a breaker in this sub panel. We ...
5
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2answers
659 views

Does the neutral wire float or go to the neutral bus on a sub panel?

Does the neutral wire float or go to the neutral bus on a sub panel?
3
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1answer
206 views

Can I replace two light switches with a single light switch?

In my basement family room I have two sets of track lighting on either sides of the room. Each set is controlled by it's own dimmer switch, and both dimmer switches are in the same box in the wall. ...
5
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3answers
592 views

Can you run a junction inside an outlet or recessed light

I have been working on finishing my basement and am starting my rough in electrical. I am learning as I go and have gotten most of the basics down.. calc load, box size, stapling, supports etc. One ...
2
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2answers
249 views

De-coupling fan and lighting switches?

Background on what I'm trying to do: This question appears somewhat similar in concept to Can I control a bathroom extractor fan independently from the light? however, in my case, I believe the ...
4
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1answer
141 views

Why do I hear intermittent speaker hum that goes away when I turn lights off or on?

I'm hearing speaker hum in a stereo system that I recently hooked up. I can't pinpoint when the hum begins, but I've identified that turning certain lights off or on in the same room eliminates the ...
3
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1answer
1k views

How can I mount a security camera on the outside of the house?

I'm tasked with mounting a security camera on the outside of the house and I'm not sure what would be the right way to do this. There are two basic problems: how to mount the thing and how to run the ...
3
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1answer
81 views

How can I calculate the Btus needed for a single room A/C unit?

How many Btus is recommended for a room about 35 square meters? I have 2 units with 13,000 Btus each. I'm thinking it should be enough, but the room is just so-so cool. I can never say it's COLD in ...
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4answers
230 views

How can I calculate the power consumption of an A/C unit?

I have an AC unit with the following specs: Cooling Capacity: 1260 kcal/h, 1.47kW, 5000 Btu/h Fan Motor Power: 0.034 kW Current: 0.155 A My question is how much power does this unit actually ...
2
votes
1answer
93 views

What are the code requirements for installing a ceiling fan alongside a fire sprinkler?

I have a fire sprinkler in my bedroom ceiling which is right in the middle. I want to install a ceiling fan. What are code requirements to follow?
2
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1answer
718 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 ...
2
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0answers
710 views

How does a multi-tap motor speed control work?

I have a Home Depot, undocumented, no-name ceiling fan and I've messed up the speed control connections, and I'm trying to understand how the circuit works. I found a circuit on the internet which ...
3
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2answers
2k views

How can I install a ceiling fan, recessed lights, and receptacles on the same circuit?

I believe the configuration in the image below is what I need in order to power a ceiling fan and recessed lights on two separate switches out of a two gang box using the existing cables. However, ...
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0answers
35 views

What size of transformer do I need if I have to bring a 208Y/120V service to a structure and the power company provides a 480 V service? [closed]

Can I use a 150 V, 250 V, 300 V, or 400 V transformer for a 208Y/120 V service to a structure with the power company providing a 480V service?
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1answer
94 views

Can I install a subpanel using only two ungrounded (hot) conductors and a grounding conductor?

we removed the inside part of an air conditioner / heater from a mobile home. we plan to use this area as a small pantry. The wires that were connected to the heater is 2 black connected to 2 seperate ...
2
votes
1answer
103 views

Finding one power wire to two lite switches. ugh!

I bought this house one year ago, have had some problems with its electrical. My bathroom switch controls bathroom clothing closet light and the bathroom light. I notice it really sounded funny at ...
3
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1answer
484 views

Sump Pump Trips GFCI Receptacle. Is a single, dedicated non-GFCI receptacle safe?

I recently replaced my sump pump in one of my two sump pits. To comply with codes, I replaced the outlet with a GFCI type outlet. Unfortunately, once I turn the power back on, the GFCI trips ...
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0answers
56 views

What should the voltage be on an unused neutral line in a 3-phase supply?

I am currently setting up a machine in a trade show. The machine uses 480V 3-phase power with no neutral needed. The show electrician connected the power to the machine and just taped off the neutral ...
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2answers
3k views

Why does my laptop charger make a spark when plugged in?

From time to time (not always but often enough) when I plug my laptop's charger in the wall outlet it makes a spark (even if I use different outlets it's the same). Why does it do this? Is this a ...
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0answers
100 views

Is a standard power outlet sufficient for a 2.8 kW oven?

I'm moving some of my kitchen appliances around, where the oven is going where the Dish Washer was. The Consumer Unit has just a single breaker for all kitchen appliances (except the cooker hob, which ...
1
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1answer
111 views

What does this (electrical) value mean on my washing machine's back?

The electrical parameters of my washing machine are printed on the back. Among them there is a value for amperage: It says 10A but I don't know if that means that I need a fuse of minimum 10A or ...
4
votes
1answer
2k views

What size wire should I use to feed a subpanel in my garage?

My main panel has been upgraded to 100 amps. I would like to add a subpanel in the garage which would supply: 20 amp Mig welder running on 120 volts, but later upgrade to a larger Mig welder as i ...
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0answers
74 views

What type of junction box cover do I need?

We are building a set of shelves to cover up a sewer pipe in my basement. The shelves will have a false back that covers the pipe then have usable shelves in front of it. The only problem is that ...
4
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4answers
873 views

How to add indicator on a light switch to indicate the outdoor 3-way light is on?

Have some carriage lights outside my garage that can be turned on from inside the house. It's common that the switch will get flipped and the lights will stay on when they're not wanted. Is there ...
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1answer
125 views

Can I substitute halogen bulbs for incandescent bulbs?

Instead of three 40w light bulbs, can I use only two 43w halogen light bulbs in a ceiling light fixture with 3 lamp sockets rated at 40w maximum per socket?
2
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2answers
204 views

Is it against NEC code to re-use pulled cable?

I'm re-wiring parts of my house and have pulled some 12/2 out. Is it against NEC code to re-use that cable? I didn't have to pull that hard to get the cable out and there doesn't appear to be any ...
7
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1answer
282 views

How should this circuit be properly grounded?

I am hiring an electrician to do the work so my question is more for my education and helping me ask the proper questions to the perspective contractors. Purchased a condo recently and want to put in ...
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1answer
142 views

Can 22 AWG Solid Copper carry 24 VAC?

I have this irrigation caddy unit, and it requires 24VAC. There's a location outside my house with one ethernet cable and another brown cable with four solid copper wires (black, red, yellow, green). ...
2
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1answer
99 views

Is it possible that this GFCI receptacle is grounded without an equipment grounding conductor being connected?

I was attempting to upgrade an old outlet to a GFCI outlet. There are only two wires one black and one white. There is no ground wire. However the receptacle tester read "correct wiring". Is it ...
1
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1answer
124 views

Joining 8 wires into one

I have the cables from 9 bulbs joined into one using a screw terminal temporarily. What is the best thing to use to do this in a way that's waterproof and suitable for outdoor use. Whatever i use ...
6
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1answer
188 views

Is it okay two breakers are controlling the same outlets and appliances?

To be specific, we recently had some electrical work done. The electrician added a second panel. He left without labeling anything. So today I've been testing outlets and switches trying to figure out ...