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. Posting photographs of wiring junctions or drawing a wiring diagram and posting ...

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2
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1answer
590 views

How can I route the cables for my TV in a basement with a “half wall”?

I would like to hang my new television on the wall in the basement, and run the cables through the wall to the entertainment center. My issue, is that the wall is a "half wall" because I have a split ...
4
votes
5answers
14k views

Can I install a Subpanel (in a seperate building) using a 3 wire connection (2 hots and 1 grounded neutral)?

Can I use a 3 wire connection (2 hots and 1 grounded neutral) to install a subpanel in a seperate structure if I install a seperate ground rod to the grounding bus in subpanel? I have 8/3 w/o ground ...
0
votes
2answers
44k views

What size breaker and wire do I need for central air conditioning?

I am getting ready to hang drywall in my basement but before I do that, I need to run wire from the main panel upstairs to the future location of the central AC furnace through the basement ceiling ...
1
vote
1answer
769 views

How do I hook up a new “pull-type” light switch in my basement utility room?

The old pull-switch was installed when we bought the house, and it was of a different type than the new one I bought. I went to replace it, and found out I couldn't just swap the wires, since the old ...
2
votes
1answer
617 views

What can I use to lubricate electrical contacts?

I've been replacing lots of 2 pin MR-16 halogen bulbs and have been having a very difficult time inserting them into the sockets. I've also lost few pins removing the old bulbs. Is there anything I ...
1
vote
1answer
3k views

Why does one light blink after installing new three way switches in my hall?

I installed the new switches with the wires in the same location the new switch this is a lighted one. the hall way light blinks on one of the bulbs in the off position. Do i have a bad switch or ...
1
vote
0answers
618 views

what would cause the ceiling fan light to blink or shut off in a fan that's over 30 years old without any problems til now

The ceiling fan is over 30 years old worked flawlessly until now, light either blinks or shuts off altogether. But, when you turn the wall switch off then back on it lights up no problem for days, ...
2
votes
1answer
215 views

Why does one light on a new chandelier light up after the others?

One lamp socket in a newly installed chandelier lights up the bulb a split second after the others. I changed bulbs to make sure that wasn't the problem. Why is this happening and should the ...
12
votes
7answers
82k views

Why Do 240V Circuits Not Require Neutral?

Someone told me that a 240V circuit does not require a neutral wire in the cable. Can anyone explain this phenomenon from the electricity perspective and generally explain why circuits do and do not ...
2
votes
2answers
5k views

How do I design the circuit for baseboard heaters?

I am designing the circuit(s) for my basement apartment (cca. 800 sq ft) baseboard heating solution. I am planning to buy Berko HBB Series heaters and distribute them as shown in the below table. ...
0
votes
0answers
168 views

How do I wire a two-way switch?

I have a one gang two way switch on top landing, there are four red wires one yellow one blue how do I wire the switch?
1
vote
1answer
1k 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. ...
1
vote
1answer
417 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. ...
7
votes
2answers
1k 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
votes
1answer
2k 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 ...
-1
votes
1answer
673 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 ...
1
vote
3answers
3k 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 ...
3
votes
3answers
9k 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 ...
6
votes
2answers
504 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 ...
1
vote
0answers
75 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 ...
7
votes
2answers
2k 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 ...
1
vote
0answers
85 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
5
votes
4answers
7k 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
votes
1answer
878 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 ...
6
votes
6answers
2k 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 ...
7
votes
4answers
8k 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, ...
1
vote
0answers
580 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, ...
1
vote
1answer
286 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
votes
1answer
85 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 ...
1
vote
0answers
314 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
3answers
4k 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
votes
2answers
3k 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
votes
1answer
4k 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. ...
6
votes
3answers
7k 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
votes
2answers
1k 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
votes
1answer
426 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 ...
4
votes
1answer
25k 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
votes
2answers
3k 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 ...
2
votes
4answers
17k 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
2answers
974 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?
3
votes
2answers
8k 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 ...
3
votes
1answer
4k 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
votes
2answers
12k 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, ...
1
vote
0answers
55 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?
1
vote
1answer
482 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
193 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
votes
1answer
11k 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 ...
0
votes
0answers
113 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 ...
4
votes
3answers
29k 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 ...
0
votes
0answers
265 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 ...