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
48 views

Should the neutral for a GFCI be separate from other neutrals?

What I found at the sub panel in the garage was an old Murray 120/240 being fed from the main with a 12/2 or 10/2 (dont remember) bx. At each phase I get 120 from phase to neutral. It has 2 double ...
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1answer
43 views

Electrical Code Clarification

I'd liked to get some insights into how others interpret the code regarding AFCI and the NEC 2015 code. Here's a hypothetical: Arc fault protection is omitted for outlets outdoors, garages and crawl ...
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1answer
29 views

Electrical - converting 3-way to single pole for multiple fixtures

My kitchen has 4 ceiling lights that are all on a 3-way switch (one switch at each end of the room). I would like to separate them and put 2 lights on one switch (single pole) and 2 lights on the ...
2
votes
2answers
77 views

Are two prong cords safe? Audio Interface

I have an audio interface called an m-audio profire 2626 (made sometime in the late 2000's) that's just a solid metal box that takes inputs form mics and 1/4 jacks - it only has a two prong plug-in ...
2
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1answer
25 views

Circuit breaker kicks off when one switch is on

I have a ceiling fixture with three wires coming in to it one is hot, one goes to the wall switch one goes to the next room to a light switch. I need to know why would one black wire went straight to ...
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1answer
33 views

Troubleshooting Four Fluorescent Light Fixtures

In my office, I have four fluorescent T-8 4'/4 lamp surface mount fixtures. All four are on the same three-way switch. I just replaced 3 of the four fixtures. Two of the new fixtures adjacent to each ...
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3answers
72 views

How to hook up a 240V 50Hz heat pump to 60Hz

I am facing a challenge: Every EVI (-25C outside) air to water heat pump system seems to be 240V/1Ph/50Hz (and 1 exception I found so far: 240V/1Ph/60Hz, however with extremely limited information, ...
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1answer
34 views

open neutral caused from changing water tank?

I had my water tank changed and since then my dish washer does not work. There is no power to it from the existing wire. Ihave since turned off the breaker to it changed it and nothing. There are no ...
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2answers
176 views

Smoke alarms go off in the middle of the night for no apparent reason and then is fine

Tonight at about 2 AM my wife and I were awakened by our fire alarm system going off in full alarm mode. I quickly jumped up and pressed the button to reset the system and they all stopped. We checked ...
2
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1answer
52 views

How can I install the electrical and plumbing for an aquarium filtration system through an exterior wall?

I have a large fish tank in my house, and would like to run a 1\4" reverse osmosis/deionization (RO/DI) top off water tube through an exterior wall into my house so that I can have the top off tank ...
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0answers
92 views

red wire, blue wire connections to black and white wire connections

I purchased a new ceiling light that has a red and a blue wire. The wires in my house to connect it to are white and black. Which wire connects to which.
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1answer
49 views

Mount a projector to an existing ceiling junction box?

A media room has a ceiling fan and the owner wants to replace it with a projector mount, and possibly reuse the wiring to power the projector. The projector weights less than the fan, so this sounds ...
1
vote
1answer
59 views

Monitor blacks out when fridge turns on - bad power supply? Surge protection?

My PC monitor often turns off/blacks out for a second when the fridge starts up. It is on the same circuit as the fridge, so I assume this is due to the sudden draw from the fridge causing noise or a ...
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3answers
79 views

Installing electrical plug without a stud and where can I find parts

I need to place an electrical outlet where there is no stud. Where can I find outlets to do this?
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0answers
35 views

How do I wire a universal remote to control my ceiling fan?

I am trying to setup my fan so that it can be controlled via a universal remote. The remote can do lights + fan speed, but I don't particularly care about controlling the lights. The fan is above a ...
0
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1answer
39 views

Can I replace a single pole light switch with a GFCI switch combo?

I have an older house that has a single pole light switch in the bathroom. it powers a single bulb vanity light above the mirror. I would to replace it with a switch and GFCI outlet there is just a ...
2
votes
3answers
61 views

motion sensor light with a three way switch

I want to put a motion sensor light in my breezeway. Right now the light is controlled by a three way switch. Will I ab able to do this installation.
2
votes
4answers
86 views

Loss of power to several circuits at the same time without tripping the breaker

I have been experiencing flickering lights from time to time in the last few months. Now I am losing power to 4 circuits at once without the breakers being tripped. This is happening intermittently ...
2
votes
4answers
160 views

Are power outlets in a home out of phase with each other?

I'm working on a science project and there's one aspect of home wiring I need to find out (don't worry, I'm not messing with wiring - this is all on paper). Since 120V outlets in a home can be wired ...
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0answers
29 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 ...
2
votes
2answers
77 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 ...
2
votes
1answer
73 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
44 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 ...
0
votes
1answer
110 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 ...
1
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1answer
114 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
83 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
139 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
240 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
54 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 ...
1
vote
1answer
44 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 ...
0
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0answers
26 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 ...
1
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1answer
66 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
44 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
32 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 ...
4
votes
3answers
514 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 ...
1
vote
2answers
107 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 ...
2
votes
2answers
87 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 ...
4
votes
1answer
148 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 ...
0
votes
1answer
49 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
54 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?
5
votes
2answers
471 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 ...
0
votes
2answers
77 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, ...
2
votes
1answer
35 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 ...
5
votes
4answers
650 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 ...
0
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3answers
46 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
56 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 ...
3
votes
2answers
54 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 ...
0
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1answer
44 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?