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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Help wiring a 3 switch box in my bathroom

I have a 3 switch box and the bottom switch that controls the heater was broken so I replaced it and I can't remember how to wire it, tried 10-15 combinations and it still doesn't work, not sure how. ...
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3answers
82 views

How does this 1 wire to 2 fixtures & 2 switches work? Is it safe?

I am cleaning up my basement and came across an open junction in a closet between 2 adjacent rooms; I will call them "paint room" and "radio room". I know open junctions are not good so after turning ...
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0answers
7 views

4 way switch controls two outlets and one overhead light oppositely [on hold]

In my foyer I I have one three way switch for a light fixture at the top of the steps. There is another at the top of the steps. These work fine. I have a third switch that had two neutral and two ...
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0answers
7 views

Dual relay motion sensor, only one relay active?

I have a bathroom with a fan and a light in it, the light is on one switch and the fan on another. Since the fan was an add on, they were put in a single gang box with two switches. I want to make ...
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0answers
11 views

Merge two ceiling light fixtures into one with two wall switches

I have two ceiling light fixtures on two separate wall switches that I would like to merge into one light fixture controlled by the two separate wall switches. Do I just make one of the wall ...
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2answers
48 views

Why is half of my house without power with no flipped breakers?

The master bedroom and middle bedroom of my 3 bedroom mobile home is without power. None of the breakers have flipped. I even changed the breaker that controls that part of the house and my ceiling ...
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1answer
34 views

Does the NEC limit the maximum size of junction boxes?

In this question, the OP has constructed a large junction box out of several extension boxes attached to a "regular" junction box: Is there any upper limit on the size of a junction box (either ...
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2answers
27 views

Grounding subpanel to box - 'tap threads'

I've installed a subpanel and need to ground the grounding bar to the actual panel box. I was instructed to run a #6 jumper to a hole on the box, attach with a screw, making sure to 'tap threads'. ...
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1answer
12 views

what would make one light of two on one switch quit working [on hold]

I have 2 ceiling lights controlled by one switch. One of them quit working. What could be the cause?
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0answers
16 views

Connecting three wire dimmer switch (black, black, green) to four-wire cable (red, white, black, ground)

I have a cable with four wires (red, black, white and ground) coming into my switch box from the ceiling light in my dining room. I am connecting a three-wire dimmer switch (two black and a green ...
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0answers
14 views

Changing sconce from flourescent to halogen

The new sconce has two black wires and ground. Can it be used in existing location which has one black and one white wire?
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0answers
37 views

Coast 3-way — does this conform with Code?

For those who aren't familiar, the California or Coast 3-way switching arrangement is a method of wiring a three-way switch circuit that is used when both a switched and an unswitched hot are desired ...
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4answers
50 views

Should I proactively replace old GFCI outlets?

The way I understand this page about GFCI outlets: (a) GFCI outlets can fail after about 10 years, making them unable to detect faults, (b) when outlets made after 2006 fail, they shut off power ...
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1answer
49 views

switching half an outlet

gregmac's terrific, detailed replies here prompt a question for me. I have a switch mid-circuit that will control half of the next outlet downstream. There is one more outlet after that one, and it's ...
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1answer
49 views

Does adding a disconnect box below the meter mean that my service panel is now a subpanel?

I don't understand the bonding at my main disconnect. My problem is that my main panel in the house was wired OK with the neutral bonded to ground. The power company added a disconnect box below the ...
2
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1answer
67 views

Receptacle connection with aluminum wiring?

I recently purchased a home that has some aluminum wiring. The previous owner decided to "upgrade" the receptacles to make it "safer" for me and my family; these changes were made after the general ...
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1answer
24 views

can I combine electrical cords and their dimmeers?

I have three identical floor lamps grouped together. Each came with its own cord and slide dimmer on the cord. I would like to combine the three cords and have them all run on the same in cord ...
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0answers
24 views

Toaster and Kettle cause my green power board to trigger

I had my computer connected to a green power board. The computer itself is on the master port and the screen, speakers, etc are on the slave ports. When the master port drops below 5 W, ie. when the ...
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3answers
81 views

Want to add outlet to bathroom

I have a bathroom with only a light switch and no outlets. The wiring is old so there are no ground wires. Can I put an outlet on that circuit and if so, should it be a GFCI?
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1answer
67 views

Can I use a jumper from existing light switch to get power to 5 new lights?

I want to add 5 ceiling can lights. Can i use a jumper wire to jump from existing light switch to get power to new switch for can lights?
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0answers
22 views

110v from high-leg delta drops voltage, what can be the cause? [on hold]

I am in a 3-phase industrial building with a box that I have identified as a high leg delta: between any two live wires I have 240V between one live "A" and neutral I have 208V between any of the ...
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0answers
33 views

How should I secure electrical wire to a cinderblock wall in a crawl space?

I just purchased a house that was built around 1995 and has a cinderblock foundation that is exposed under the deck. There is a detached workshop that is about 100ft from the house that gets its ...
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0answers
22 views

Ceiling fan lights flicker with fan off, but go to normal with fan on

Just bought an Allen Roth ceiling fan from Lowes the other day. The fan runs fine. When I have the just the lights on they flicker very rapidly. When I turn the fan and the lights on, the fan and ...
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2answers
101 views

What reasons are there to rewire an ungrounded circuit instead of adding GFCI protection?

The NEC allows replacing non-grounding-type (2-prong) receptacles with grounding-type (3-prong) receptacles by adding GFCI protection at the breaker or first outlet. What reasons might there be for ...
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2answers
37 views

Can I use a three wire cable to feed a whirlpool tub?

If I'm required to add 2 dedicated GFCI circuits for a whirlpool tub and inline heater, can I run 3 wire cable (red,black,white,ground) or do I need 2-2 wire cables?
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1answer
52 views

Is there a specific NEC code specifying the distance between water heaters and electrical panels?

I have a condo in a large building with many identical units. Several times other owners have mentioned that the original layout of the utility room isn't up to code due to the proximity of the water ...
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0answers
6 views

How post images and pictures? [migrated]

Newb question - I have some DIY questions (mostly electrical with wiring and grounds and stuff) and I need to show pictures (cannot describe it adequately) - I read up on how to show images but it is ...
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1answer
25 views

installing a replacement fixture with three lamps in one on a two way switch

I am replacing a single pendant-type ceiling light with a new pendant fixture that has three individual pendants that go into the single "hood" that attaches to the box in the ceiling. There are two ...
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0answers
41 views

Why would a GFCI on my infloor heating circuit trip, when an exhaust fan on a different circuit turns on/off?

I have infloor electric heating installed in our bathroom. The power is supplied by a dedicated 240V/1Ph. circuit that also feeds a couple of baseboard heaters in our bedroom. The infloor heating is ...
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2answers
73 views

What options are there to achieve both grounding/ground-fault and arc-fault protection on old 2-wire circuits?

The three receptacle circuits in my house are 2-wire NM, but have 3-prong receptacles. My electrician recommended and installed GFCI breakers to provide "grounding" to these circuits. I now realize ...
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1answer
43 views

Why are LED bulbs in a cooker hood flashing when I put in the fourth bulb?

I replaced 4 bulbs on a cooker hood with LED bulbs. Three will work ok till I put in the fourth; then they flicker once when turned on but will not stay on.
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1answer
68 views

What could cause my outlets to not have enough power?

Four outlets won't work right unless a lamp is plugged in then everything works fine. Unplug lamp it's like not enough power. Plug lamp back in outlets work fine. Why is this happening?
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1answer
28 views

Is an oven heating element polarized?

I just took out an oven heating element without paying attention to which wire was hooked up to what end. Does it matter how I hook it back up?
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1answer
46 views

I ran into two hot lines when replacing a three way switch

I've read up on three way switches, and have replaced a few over the years. I recently installed a bathroom fan, and so had to replace two three way switches. Very simple setup - two switches, one ...
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1answer
27 views

Increasing the capacity of an electric baseboard thermostat

The electric baseboard heat in my living room has a mechanical thermostat (bimetallic strip) that occasionally gets stuck in the "on" position. I'd like to replace it with a solid-state thermostat, ...
3
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2answers
263 views

How can I repair a chewed-through power cable?

My puppy chewed the power plug off of my space heater, and I'd rather not buy a whole new space heater if I don't have to. I went to the hardware store and found a plug rated for 125V and 15A. The ...
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1answer
39 views

Is my electric stove receptacle wired correctly?

When I test the four prong electric stove outlet by touching one of the prongs and the ground, one prong reads 120V and the other 220V. Is this normal or is it wired wrong?
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2answers
42 views

What would cause all my gfi recepticles to not reset in my kitchen?

All my recepticles that are gfi except one will not reset nor will the outlets that are protected by them work? My house was built in 2006 and the receptacles are levitons. It tripped the breaker ...
2
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0answers
30 views

Why won't my thermostat control the HVAC anymore after trying to switch thermostats?

I bought a new Nest thermostat which is supposed to be compatible but needs a professional installation (advice that should have been heeded by non-professional electrician me). This is to replace an ...
2
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1answer
56 views

Is it ok to run a new a power line under the roof as opposed to the ceiling?

I am planning to run a new circuit to install ceiling lights, fan, etc. My attic is very low (approx 3 feet), and there is insulation between the joists (B in picture), so it is going to be a hassle ...
3
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1answer
27 views

rewire ventilation fan to use pull chain instead of wall switch

I'm converting part of an unfinished space to make a darkroom. I'm installing a bathroom ventilation fan over the sink but there is no convenient place to install a switch for the fan. I purchased a ...
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0answers
20 views

Fan speed control with timer?

I'm looking for a device that will allow me to control the fan speed as well as have it timeout. In theory this might work if I used the output from the timer to feed into the dimmer, but it doesn't ...
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0answers
35 views

Listed electric baseboard heaters that permit installation below outlets

Are there UL-listed electric baseboard heaters that do permit being installed below outlets? The FPN in 210.52: Informational Note: Listed baseboard heaters include instructions that may not ...
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2answers
60 views

Replacing dumb wall switch with smart one (wiring)

Based on the first diagram below (which is the current wiring for my wall switch), is the way I have the second diagram set up correct? My biggest point of confusion is the line/load wires. Judging by ...
3
votes
1answer
54 views

Can I add a three way switch to a light circuit when I only have access to light switch and it just cuts the power to the switch?

I have a light switch that controls 2 lights in the hall. The wire to the switch carries power to the switch with the black wire and the white wire carries the power to the light. I have access to ...
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2answers
44 views

Replace GFCI in bathroom

When I opened up the old one, there are 3 cables with the normal 2 black, 2 white, and ground. However, there are 2 whites and black capped together to a load screw and another white on the other ...
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0answers
37 views

How can I add a GFCI receptacle on a circuit with split receptacles?

I have a typically wired living room with all receptacles switchable on the top outlet. We are installing a large fish tank and decided to add GFCI protection. I'm trying to change a single duplex to ...
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0answers
39 views

How can I resolve tripping problems with CAFCI?

Situation: I was having combination arc fault circuit interrupters (CAFCI) installed in some 20 Amp and 15A branch circuits. In several cases , the CAFCI immediately tripped after installation, or ...
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0answers
35 views

How do I install a SensaSwitch on a 3-way circuit?

I recently purchased a SensaSwitch, Manual-ON / Timed-OFF (PDF of instructions) and I cannot install it in such a way that it performs as I desire. I have a switch at the top of my basement stairs and ...
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3answers
44 views

How can I figure out why my Sears Craftsman garage door opener will not work?

I have tried troubleshooting my Craftsman door opener (model 139.53325SRT), because it will not close. It will not close when pressing the wall switch: the opener light just blinks if I do that. ...