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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25 views

How can I switch an electrical circuit from one dwelling unit to another?

I recently purchased a 2 family home and decided to live in the 2nd floor unit. My new tenants on first floor are concerned because the basement and front entrance electrical are hooked up to the 1st ...
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2answers
52 views

Will a non-contact voltage detector find live wires in concrete walls?

I'm quite an amateur when it comes to home improvement type stuff but I now have my first home and starting to do small work around the house. I kind of scared myself when I bought a drill and with ...
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1answer
64 views

How many outlets for a small recording studio/media room?

I'm getting ready to close the deal on a house that has a 20' x 20' detached garage that I will be converting into a recording studio/media room. I'm going to be running two main power amplifiers (A ...
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1answer
40 views

How can I replace my light fixture with a ceiling fan?

I have a new ceiling fan. I removed the old light fixture. The ceiling fan suggests connecting black wire to black, blue to blue, white to white, green to green. Makes sense. When I removed my ...
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1answer
54 views

Wiring a switch to (2) pendant lights, a ceiling fan (all new)

My existing is I have no ceiling lights or fan. I mounted two pendants and a ceiling fan that has a light. The only switch is one that controls the upper outlets so lamps can be used (which I ...
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1answer
64 views

Can I put the junction box for an exterior wall fixture inside my garage?

I have an exterior, wall-mounted light fixture that I want to attach to my new garage. It looks like this: Here's a PVC board the contractor left to mount it. There appears to be OSB sheathing ...
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3answers
74 views

How can a 5V power supply power 3 LEDs at 3V each?

If I have three LEDs at 3V each = 9V, how can a 5V power supply 9V power to those LEDs? Does it have anything to do with Watts?
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2answers
75 views

Do I need 5V or 12V to power a LED light strip?

What is difference between 5V and 12V power supply? I want to power my WS2812B LED light strip (5m at 60 LED/meter) and don't understand why I would want a 400W 5V 80A power supply vs a 400W 12V ...
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1answer
232 views

Can I power seven 54W LED light strips from a 400W supply?

I have ws2812b 60 LED/meter and a 400W/80A power supply. Is it fair to say that my power supply is 'capable of supplying' up to 400W of power and not 'pushing' all 400W of power? My understanding is ...
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2answers
47 views

Repair L-shaped notch in drywall

I cut some L-shaped notches in the corner between my walls and ceiling in order to pull some electrical wires through. Now I'm not sure how to repair the hole... should I just cake in joint compound ...
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1answer
33 views

How to override an attic thermostat with a wall switch?

I want to install a fan in my attic. I want the fan to be controlled by a thermostat in the attic, but I want the ability to bypass or override the fan from within my house. Ideally I would like to ...
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0answers
25 views

Home air conditioner blows capacitor

My air conditioner tripped the breaker, I replaced the breaker and checked and cleaned the filters. so after some research I found out the cooling fan was not working. So tested the capacitor and it ...
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1answer
55 views

How do I replace a strip light with wiring that doesn't match the old light?

I'm replacing a strip light, but the wiring on the light I'm putting up does not match that of the strip I'm taking out. Coming out of the ceiling there are two cables. The larger white cable ...
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1answer
33 views

all power to one room not working outlets read hot

We've lost all power in one room. We Replaced all the outlets in the room and the breaker for the room. all breakers and outlets read hot but no electrical is working in the affected room.
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0answers
24 views

Retrofitting a remote opener into a garage-gate motor

Our garage door is already powered, but to initiate the opening (and closing) of the gate, one must get inside the garage and push one of the three buttons: Open Close Stop How hard would it be to ...
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0answers
24 views

Current/Voltage reversal Neutral & Ground/.Earth

There is 30 V AC reversal between Neutral & Earth/Ground wire, so how could it prevented so that electronic & electrical instruments be protected. What is the cause of it & how could it ...
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3answers
504 views

Breaker trips instantly

I have a TV, DVD player, and satellite receiver box on one breaker and it suddenly tripped. I went to the panel and tried to reset the breaker and it trips immediately. Then I unplugged everything ...
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2answers
92 views

Amperage required for new sub panel

I currently have a 200amp main panel that has no room for additional breakers. However I want to add circuits for the following: 1) 50amp circuit for a hottub 2) 50amp circuit for my garage for ...
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2answers
79 views

How should I apply ambient air temperature ampacity correction factors when exact temperature is unknown?

Is there a good method or rule of thumb for determining ambient air temperature for wire runs through non-climate controlled areas in residential applications (e.g. attics -- I've read literature from ...
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1answer
117 views

Do I need to derate wire ampacity for two or more sets of wires in the same raceway for subpanel wiring?

I was planning to pull three sets of four conductors (3 AWG wire) through 2" EMT conduit for a 30' length that is common to all three sets of wires, and then branch off at a listed metal junction box ...
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1answer
43 views

Ceiling Fan Replacement - Wiring Issue

I am replacing a ceiling fan in one room and when I took the old one down I found 2 black wires tied together(one of which is hot), one white ground wire, one hot white wire, and one red wire, and a ...
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0answers
51 views

How would I connect power from an emergency security flood light fixture?

How would I connect power to the inside of my apt. Building from the emergency security flood light fixture outside the building?
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0answers
37 views

Splicing an electrical fixture outside through inside for electricity [duplicate]

How would you connect an electrical fixture outside through to the inside fron a security flood light?
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2answers
381 views

Do metal junction boxes used solely as pull boxes need to be grounded?

I am planning to pull three sets of four conductors (3 AWG wire) through 2" EMT conduit for a 30' length that is common to all three sets of wires, and then branch off at a listed metal junction box ...
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2answers
61 views

Chewed-through ground-fault cord

Over the winter, my dog chewed through the power cord on an a/c window unit. I was going to just add a new plug as the cord is still long enough. I sliced into the wire and found 3 wires (ground, ...
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1answer
31 views

How to make proper crimp joint

For some low voltage applications, I'm trying to use "crimped" connections. Specifically, I'm trying to use yellow terminals with 12 AWG stranded wire. I got a cheap color-coded ratcheting crimper for ...
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4answers
572 views

How should a switch loop be wired?

I encountered this apparently simple situation recently. The issue is that it seems no matter how you wire it, you'll always end up with a black connected to white, which seems wrong. How should ...
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3answers
45 views

How many lumens are there in one watt?

I have a problem to sale electric lamp and LED bulb. So I want to know how many lumens equal to how many watts?
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0answers
48 views

How do I wire a garage consumer unit?

I have bought a garage consumer unit, and have wired up accordingly. Power goes to a shed, but when I plug a drill into the socket it trips the rcd in the consumer unit. I have double checked the ...
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2answers
45 views

How to track down a short circuit in attic with pressed metal ceiling?

When switching on a light the circuit breaker tripped. On the distribution board, I switched off the sub-circuit for the light. The rest of the house and the plugs in the room with the light still ...
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1answer
38 views

Electrical - 50 amp abandoned wiring from hot tub connected to breaker (outside)

I have 50 amp wiring sticking up in the deck from a hot tub that was removed. The breaker is outside that it is connected to, how do I remove or terminate with a box and cover?
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1answer
39 views

Safe way to terminate exposed electrical during remodel?

I have a few exposed electrical wires that were cut in order to remove wiring in the area being remodeled. Is there a safe alternative to terminating all these points inside boxes? I need them safely ...
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1answer
85 views

What wire type & size for sub-panel in a shed?

I need to install a sub-panel in a shed. Total run distance from main panel to sub-panel is 80 ft and includes three 90 degree turns. Burial distance will be 18". I'm thinking to install a 60-amp ...
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2answers
65 views

Is it safe to have a wall wart plugged in to a receptacle in an attic?

I'm trying to move my router to get better reception through my house. There is a perfect spot just below the ceiling in the middle of my house. I can run the CAT5 no problem, however, I'm worried ...
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2answers
63 views

Can an electrician run wiring to convert battery powered smoke alarms to wired alarms?

I recently purchased a 2001 built condominium unit with original battery powered smoke and CO2 alarms. Since I have to replace all the alarms at this point anyway, I'm curious how invasive a procedure ...
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2answers
79 views

Why are there four electrical lines (12 wires) in this ceiling fan box?

My ceiling fan stopped working many months ago. I had somebody looked at it and they couldn't figure out what was wrong so I bough a new one today. When I dismounted the old one I found this strange ...
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2answers
75 views

Why would unplugging an A/C unit restore power to a circuit?

Last night, we got a brownout. Everything came back except the master bedroom circuit. I checked the circuit breaker and it wasn't tripped (reset it anyway, for good measure). After a hot night ...
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2answers
43 views

How can I replace this lamp socket?

I am trying to replace a single switch lamp socket to a 3 way switch but I am having trouble getting to the wires on the original socket. The terminals where the wires are attached are not visible and ...
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1answer
49 views

What could cause my range burner to be bright red and really hot when the dial is set to low?

On one front burner I have a big problem. I turn it on medium high until my water (or whatever) comes to a boil -- then, I turn it down to low heat (apx #2) -- and then many times, I look at it and ...
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1answer
40 views

Exhaust fan hook up. I only have black and white from source. Please help

I am trying to hook up a ceiling exhaust fan. I am going to run 2 switches, light and fan separate. The line in power from box is just 14 ga blk and white. My house was built in 60s. I don't know how ...
0
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1answer
80 views

How can I rewire a light to use three-way switches?

I have a light that is operated by two switches. One is upstairs, and the other is down stairs. How can I make the light work by either switch? Currently if I turn the light on down stairs, I cannot ...
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2answers
44 views

How do I properly size a 120v inline power relay to control a small air conditioner with my home automation system?

I have a 5,000 BTU, 115 volt, 4.8 amp, window-unit air conditioner I'd like to control from my home automation system. I think easiest thing to do would be to plug the unit into an inline rely module ...
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0answers
14 views

Sizing electrical wire from Solar Panels

Our home has a 200 AMP main service disconnect and a 200 AMP sub-panel inside the house. The barn is about 200 feet away with a small sub-panel and is currently fed by a an overhead 8/3 wire. I plan ...
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2answers
130 views

Ceiling fan & light installation - can't get wiring right

I recently purchased and installed a Quorum 70443-14 fan with light. This model has no pull chains, and is operated by an in-wall "remote" that is hard-wired and not removable. The wall switch (that ...
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0answers
15 views

Turning water pump power switch on and off, is it problematic?

The issue: My expensive Grundfos water pump (used in kitchen sink) is broken. Basic troubleshooting seems to indicate that the switch (XGC2-88) which is triggered by a floating device is broken. ...
2
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2answers
42 views

Photovoltaic installation: does it make sense (or is possible at all) to get a bigger inverter than the power output of the installed panels?

We are going to install a PV in our offices. Our actual needs would be satisfied by an installation of about 4kW, so that ~16 panels of 250W. It's going to be a central-inverter, grid-connected ...
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0answers
27 views

Dishwasher not getting power, found a burned connection. What now?

I have a countertop switch for my dishwasher that feeds into a terminal block in a lower cabinet. Finding a d/w that wouldn't turn on, I opened that box and found the appliance side of the block had a ...
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1answer
91 views

Electrical wiring too short

Running three #4 wires 150' underground to a new barn. I ended up 12' short of the disconnect switch. is it okay to mount a weather proof junction box on the exterior wall of the barn and then ...
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4answers
100 views

Strengthen repaired cable?

The other day, I accidentally cut the power cable on my lawnmower (you can guess how). I later repaired the cable by stripping off the cable coating and wrapping the relevant wires around one ...
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1answer
26 views

Power cut out while running floor maintainer - breaker blown?

I was running a floor maintainer in my home yesterday, and after a few minutes the power to that circuit just stopped. I went and flipped the breaker a couple times, but no changes. I noticed that the ...