The installation of wire and/or electrical devices, to allow the transmission of electricity from one point to another.

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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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1answer
25 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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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
36 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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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 ...
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21 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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1answer
54 views

How do you replace existing wires behind walls

Existing wiring installed in walls. May or may not be stapled. Some of it is stapled with newer plastic staples, older runs with metal staples. I've had varied success with this by twisting and taping ...
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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
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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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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2answers
35 views

How should I attach the grounding conductor for a replacement switch?

I'm attempting to replace an old Leviton light switch with a new Lutron dimmer switch that connects to our house's Wink system. The old switch had 3 black wires attached to the light switch and no ...
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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 ...
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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 ...
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1answer
26 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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59 views

Regulations 2015 NEC regarding 12/24 volts DC, New DC wiring Light/+in my old.“ I'm Scared ”

What might regulations would there be in the 2015 national residential electrical code regarding 12/24 volts dc in residence. I want to install mostly lighting but also also all electronic devices ...
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2answers
65 views

Acceptable “3-way” switch wiring solution?

I would like to use a raspberry PI to turn lights on remotely from a raspberry PI. In this diagram, I am proposing 2 paths for completing the AC circuit and therefore turning the lights on: 1) the ...
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1answer
34 views

What size conductors would I need for a 10 ft. extension cord for a plasma cutter?

I would like to have a 10ft extention cord for my 220v plasma cutter. I just put a 3 prong (crow foot) connector on it to match the plug for my Lincoln arc welder and I would like to be able to move ...
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1answer
50 views

How do I connect my whole house humidifier to my furnace?

Connecting Desert spring Humidifier to the furnace: Do I eliminate the 24V transformer that came with it? The furnace Keeprite has the the electronic board says Humidifier W1 and C. where can I ...
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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 ...
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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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1answer
54 views

How can I determine which wire is which when putting a new plug on an extension cord?

My question has to do with identifying the hot (black) and neutral (white) wires on the plug, when both wires are unmarked twisted copper? The other end of the cord (outlet) is well marked with white ...
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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
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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2answers
38 views

What could cause fluorescent lights to sporadically not come on?

My kitchen has 9 26W fluorescent can lights (not CFLs - they have external ballasts). Often when I turn the switch on, particularly after they've been off for at least several minutes, about 4 of ...
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58 views

2 hot wires into light switch and no neutral

I recently bought a home built in 1908 and I've found some funky electrical issues - such as the entire main floor on one 30 amp circuit. This morning I went down to the bathroom on the main floor and ...
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1answer
80 views

20 amp breaker with 12 gauge and 14 gauge wire

I am looking at replacing a couple of old, porcelain style single bulb fixtures in my basement with some 4 lamp fluorescent fixtures. I am actually running new wire to the fluorescent fixtures from a ...
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2answers
68 views

How can I convert this hard wired fixture to a plug in?

I want to covert my hard-wired pendant light fixture to something that can be plugged into the wall as our new apartment isn't wired to direct-wire ceiling fixtures. I already wired another (vintage) ...
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1answer
33 views

Install Honeywell RPLS740B with three-way switches (disable three-way?)

I would like to add a Honeywell RPLS740B to a circuit with two three-way switches to control four outside lights. I realize the RPLS740B is not compatible with a three-way circuit, but my question is ...
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2answers
230 views

How do I wire a brand new cooktop that has no white neutral wire?

My old cooktop which is being replaced connects to a j-box with black, red, white, and bare ground wires, which goes to a 40 amp circuit breaker (US here, noticed this site is popular with Europe ...
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2answers
45 views

Why does one of two lights stay on when they share a neutral?

I have one source of power (1 hot wire) for 2 loads (living room lights and breakfast nook lights) I am replacing the dimmers with Insteon dimmers. The previous switches didn't use the neutrals, but ...
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2answers
78 views

Running romex around switch box that is not being terminated to said switch box

Can I run a romex cable not going to a switch box around the switch box as long as it is stapled at both sides of switch box. From a vertical perspective
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1answer
46 views

Integrating hard-wired smoke detectors with fire sprinkler waterflow sensing

If you are in a house with interconnected smoke detectors (hardwired or hardwired/battery combo), can you interconnect them with the waterflow switch for a home fire sprinkler system, or do you need ...
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1answer
113 views

Electric stopped working after I moved my microwave?

"We moved the microwave to a different spot in the kitchen and didn't realize the amount of electric wasn't enough to support it. The whole wall quit working. We changed out the actual breaker in the ...
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2answers
122 views

Why is my wiring hooked up like this

Some background: I wanted to replace a light fixture but I wanted it to be lower than the previous one so I had to move the wires but when I cut away the wall I saw there was a lot more going on than ...
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1answer
34 views

Combining circuits for higer amperage [duplicate]

I now have two single ovens - each on a 30 amp breaker with 10 gauge wiring. I want to replace the two single ovens with a double oven - which requires a 40 amp breaker. Can I connect the two 10 ...
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4answers
192 views

What is the proper 'per code' method for running nonmetallic sheathed cable above a ceiling in the attic?

Can the wiring be run over the top of the ceiling joist, or must it be run through bored holes when running perpendicular to the joists? This is a non-habitable space, will have an attic entrance ...
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1answer
63 views

What is the danger of reversing the polarity while connecting a dishwasher to the electrical service?

What is the DANGER, if any, of connecting the white neutral line of the dishwasher, to to black hot line at the power source--- and of course similarly connecting the black hot line of the dishwasher, ...
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2answers
94 views

Wiring residential internet router through existing smoke detector

My internet router is setup at one end of the house thus the other end gets bad coverage. I'd like to move it at the center of the house to provide better coverage. The gear in question is located in ...
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3answers
456 views

Is it possible that I could have a 220V circuit with no circuit breaker?

Is it possible to put in an electrical circuit without any way to interrupt the circuit? I tried to work on a 220V outlet, and it wasn't marked in the breaker box. I threw every breaker, and that ...
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1answer
32 views

How do I change a single-pole switch to a timer with 4 wires?

I a want to change out a pole switch to a timer switch. All makes sense except, there are only two wires on the pole switch and 4 on the new switch. So I only have the white and black and no ground ...
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2answers
22 views

Wire guage needed for standard stove/oven combo

I am running wire for a standard Kenmore stove/oven and wire for a stackable washer dryer unit. Both runs are less than 50'. What amp breaker and guage wire is needed?
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3answers
45 views

Help installing a ceiling pendant light fixture

I recently bought a pendant-type fixture that contains three, silver (or aluminum?) stranded wires encased by a decorative braided cord. Two of the wires are sheathed in clear plastic and the third is ...
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3answers
99 views

Cloth-covered NM questions

My 50s era ranch home is wired using cloth-covered NM, as you can see in these photos (taken in a basement closet located under the stairwell where the NM is run exposed): Should I be suspicious ...
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2answers
140 views

Rewiring a house, breaker panel and all, while living in the house

Our current home (mid-50s ranch in the Midwest US -- my AHJ has adopted the 2012 NEC save for the AFCI requirements, btw) is in good shape, save for the electrical wiring, which is a major bodge job. ...
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2answers
69 views

How should I connect a chandelier from France?

I purchased a chandelier from France. The 3 wires are blue, yellow and brown, rather than the standard black, white, and ground. How should I connect them?
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1answer
32 views

Wiring a light fixture when no previous light fixture exists

My husband and I purchased a mobile home to fix up. The plugs, switches, and light fixtures were all missing. We have replaced all the plugs. We only have power to half of the house, assuming it's ...
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1answer
61 views

Is it safe to leave exposed black wire from doorbell transformer?

Is it safe for the time being to leave a loose black electrical wire from my doorbell transformer? (I think this is the transformer based on what I have read) I tried to push the box into the wall ...
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1answer
118 views

How can I install a GFCI receptacle to provide protection to other devices?

I currently have in my shop, a 20 amp outlet directly below my panel which is approximately halfway along one of the walls. Instead of having the GFCI outlet at the end, I would like to replace the ...
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2answers
142 views

How to wire a ceiling light with 2 wires to ceiling with 3 wires?

Our ceiling has three wires...one white, one black, and one green. The new light fixture we bought only has a white and one black wire. What should I do with the green wire in the ceiling?
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2answers
213 views

Combination box/switch - two wires only

The original owner of our house had this wired apparently and the outlet has never worked. Plugging a device in turns off the overhead light. Wife wants me to use vacation time off to fix, but I'm ...