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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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
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3answers
502 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
87 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
77 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
112 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
41 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
50 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
379 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
60 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
568 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
83 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 ...
3
votes
2answers
61 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 ...
2
votes
2answers
77 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
37 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 ...
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1answer
78 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
127 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 ...
0
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0answers
26 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 ...
3
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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 ...
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1answer
47 views

Electrical Boxes

I have one line coming from an outlet and need to branch it to two lines. Can i use a standard electrical box (blue PVC) as a junction box to branch an electrical line?
2
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1answer
177 views

Replacing 10 amp breaker for 20 amp

I'll try to keep this short but there is a bit of background info that may be needed. Couple of days I rented a floor grinder to eliminate uneven concrete floor in the basement. The grinder kept ...
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0answers
64 views

Can I eliminate a switch controlled receptacle, and use the switch to control a ceiling fan instead?

I'm planning on installing a new ceiling fan and was hoping to have a few questions answered before I dive into things. First some context: The existing wall switch controls half of the outlet on the ...
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2answers
205 views

Can I build an electrical pole structure to hold a power wire into my property?

The power pole to my house is at the back right corner of the property. However, it's a little outside my property line. I wanted to run a power line straight down along the pole and into the ground ...
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2answers
65 views

Do separate pieces of EMT conduit qualify as “pull points”?

Question: Do two separate pieces of EMT conduit joined by a connector qualify as a "pull point"? Background: I need to make six 90 degree turns in 2" EMT conduit to route wire for a new sub-panel ...
0
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1answer
45 views

Disconnecting wiring for chandelier

I've previously searched for some advice using Google but I'd like to confirm for my specific situation. It's simple enough to disconnect the chain supporting the chandelier but the wiring is proving ...
1
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1answer
434 views

Two white and two black wires in ceiling box

Im trying to install a replacement light and the box has 2 black, 2 white and 2 ground wires, but my fixture only has one of each. I didn't really pay attention when i was pulling everything apart... ...
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2answers
99 views

Oven suddenly tripping circuit breaker…bad oven or bad breaker?

We have a double Thermador oven in our house. We've owned the house for around two years, and the oven has worked fine up until the last few weeks. Now, using either of the ovens trips the circuit ...
2
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0answers
26 views

Air conditioned made a sound while running and stopped working

Air conditioned made a sound while running and stopped working,I guess its probably short circuited.How can I repair it by myself? What all tools do I need?
5
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1answer
465 views

What is this electrical device in my basement?

Is it something to do with the doorbell? House was built in 1947 if that helps.
0
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1answer
38 views

How do I seperate two 3 way switches to control lights seperately?

I have a porch light and three outside lights along the garage controlled by two three way switches. One switch is inside by the front door and I would like this one to control the front porch light. ...
1
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1answer
89 views

Is there a way to diagnose ceiling fan 3 speed switch wires?

I have a Hunter ceiling fan (3 speed with lights, all on one switch) and the pull switch for the fan broke. So, I went to HD and got a replacement switch that looked identical, same volts/amps rating ...
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1answer
43 views

Need help adding fan to existing 3-way switch setup

I'm including a diagram, because it is difficult to describe all of the things going on here. I have 2 sets of 3-way switches on either side of a room. 1 set operates some can lights with a switch on ...
3
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5answers
125 views

Electrical Circuits in a Workshop

I am doing some renovation in my workshop and am considering doing something kind of unusual. I find that I am always looking for outlets to plug in tools, lights, etc. Rather than using power ...
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0answers
50 views

GFCI circuit is contaminated

With the load side disconnected, I am reading 50 volts on the line side of the GFCI outlet...Also confirmed that everything on the load side seems fine when connected to another circuit. Could the ...