Questions tagged [wiring]

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

460 questions with no upvoted or accepted answers
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248 views

Why does my light box have 2 cables for this one switch?

Took down a ceiling fixture and discovered what looks like a possible switch loop, except I don’t understand how the connection gets completed with the current set up. Basically, 2 lines coming into ...
4
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4answers
932 views

What is the proper way to convert a pair of three-way (SPDT) switches into a single two-way (SPST) switch?

I'm in the process of replacing some of the light switches in my house with smart switches, Wemo Light Switches in this case. I've had no problem with the replacement of my One-way switches (SPST I ...
3
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0answers
43 views

Ontario condo light installation

My friend's condo has a junction box installed in the ceiling, but no light. Can we legally install a light here? Ontario's ESA page states that installing a light requires a permit, but does that ...
3
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0answers
93 views

What are the legalities associated with mounting splicing wire connectors?

There are some situations, such as those involving large junction or pull boxes that serve as central takeoff points for many-plexed homeruns or homerun banks, enclosures that form central splice ...
3
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1answer
440 views

Sub panel and ground rod installation: “high differential potential between the ground locations”

We have a dock (fixed-pier) that is about 40 feet from the house, and +100 feet from the main panel. 4-wire (2 hots, 1 grounded neutral, and 1 ground) run to a large junction box at the start of the ...
3
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3answers
3k views

How to replace a light fixture that has a 3-way light switch

Box] I have a light fixture above a stairwell. There are two live switches that control it, one at the bottom of the stairs, one at the top. The wiring is relatively new about 25 years old (all copper,...
3
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3answers
2k views

What's the “correct” way to install LED drivers for accent lighting?

I want to install LED strip lighting behind crown molding in my office. In my particular install, I'm using 3 strips of SMD 5050 RGBW LEDs, which draw about 72 W per strip. From what I can gather, ...
3
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2answers
212 views

Checking ground current

Background: I had a contractor finishing my basement, and part of that was installing underfloor heating using several heating mats in parallel. It worked initially but soon after it just started ...
3
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1answer
251 views

Install recessed lights and chandelier with 3-way switches

I am remodeling my entry way and dining room to give a more open feel. Existing: 15 Amp breaker 12-2 Feed directly from the box two gang box outside of the kitchen 1 standard switch and 1 three ...
3
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1answer
296 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 ...
3
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2answers
4k views

How to connect a 3 wire cable to a 2 wire outlet?

I have recently had a conservatory built and want to wire an internal light fixture that has a live and neutral and Earth terminals. I have removed my old security light and I am left with a cable ...
3
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4answers
1k views

GFCI Problem with Three-Way Switch WAS Two Switches Neutrals Only, Switched Hots Not Used

I replaced an old two-prong receptable with a three-prong GFCI (no ground) yesterday. It won't reset. I found out that "downstream" there is a light on the next level down that is controlled by two ...
2
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1answer
54 views

How can I use a switch for outlets to control a new overhead light?

I am trying to rewire our bedroom so that a wall switch that turns on/off half of all receptacles in the room will instead control a ceiling light and leave the receptacles (both halves) always hot ...
2
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0answers
28 views

New thermostat turns fan off when set to on, never turns off on auto

My oil heat furnace was functioning normally on an old mercury switch thermostat, but I wanted to replace it with a programmable Honeywell 5+2 one. There were Y, W, G, R, and B wires screwed in on the ...
2
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0answers
63 views

how to wire GFCI and dual light switch

]My mother live in an older house and has two regular light switches in bathroom. one for light and other for exhaust for the exhaust fan I would like to add an GFCI outlet in place of one of the ...
2
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0answers
119 views

When running crawl space conduit, must the conduit be run through the joist via drilled holes, or can they be attached underneath?

I'm wiring my home for 110V and cat6e(48-0V). There is currently no wiring, just an air tight shell with interior studs exposed. There is a crawl space where I would like to run all of the conduit ...
2
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0answers
80 views

Why do I measure 12VAC on old thermostat wires?

I'm installing a nest thermostat in my house - it's the UK version with a heatlink. I have successfully wired the heat link into my combi-boiler, disconnecting two existing wires in the process. I ...
2
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1answer
138 views

Black paste inside wire nuts?

I have read that older houses may have aluminum wiring, and to splice copper to it there is a less than desirable method of purple wire nuts using corrosion inhibitor paste. My house was built in ...
2
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0answers
99 views

Junction Box Blank Cover in HVAC Duct

I am starting a bathroom remodel second story that requires a length of NM wire to be lengthened by a few feet. I realize I can't do this hidden in a wall or floor and need this done in accessible ...
2
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0answers
54 views

Can I split a large amp 240 circuit into two lower amp 240 circuits?

I just bought a house. It has a double oven unit installed on a 50 amp 240V circuit. I need to replace this unit with two separate units, one 30 amp, 240V and the other 20 amp, 240V. Can I split ...
2
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0answers
131 views

Wiring light switches in two rooms help

I am changing some wiring in two rooms of my house. Room 1 had two switches that controlled an outlet. We have since taken one of those switches and installed a ceiling light. The other switch ...
2
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0answers
105 views

How can I provide up to 70V AC power to a sliding glass door panel?

I'm renovating a master bath and the entire wall between the bath and the master is completely removed. The view and light that this provides is very nice so I'm considering putting in glass instead ...
2
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2answers
87 views

What type cable and size should I use for my shop?

My existing overhead wire is triplex 1/0, 2 insulated and one bare. The power company is out of the picture because they do not provide service to a customer supplied pole. My existing wire is at ...
2
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0answers
260 views

Protect electrical wiring between drywall and brick fireplace

Following the question at Frame drywall around brick fireplace I would like to figure out how to protect the electrical wiring and other wirings (HDMI) from the top down in middle of the fireplace as ...
2
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0answers
63 views

Replacing a motherboard on a Carrier 8000VS Furnace

Hi guys, I am trying to finalize the wiring of my new carrier motherboard. I have about four more wires to connect and the new motherboard is slightly different than the old one. The pictures I’ve ...
2
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0answers
43 views

Connecting network gear directly to electrical line

I’m installing multiple PoE networking switches on a pier, but I’m not sure the best route for plugging them in. There are only a few existing plugs on the dock but they aren’t located near where ...
2
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0answers
121 views

Wanting to make existing 2-wire 220V outlet a 4-wire one

(Located in the USA) I've inherited a 220V (or 240V?) circuit which is just capped off inside a junction box. It's hooked up to a 30A breaker, and seems fine, except that it's only a 3-wire run--no ...
2
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0answers
119 views

Indicator light flickering on combination switch/outlet

I've looked at 3 furnaces plugged into combination switch/outlets that have indicator lights, but no GFCI switches. On just one switch, the indicator light is flickering unevenly. Is it trying to tell ...
2
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4answers
268 views

Is voltage on the ground conductor a sign of short circuit?

When we touch the ground wire(!) on some of our power outlets, the tester lights up. Not as bright as when touching the live wire and the circuit breaker doesn't tip, but there is definitely "...
2
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0answers
387 views

Smoke Detector wiring - impacted by 2 breakers?

dig if you will the picture of one of my smoke detectors and the curious (for me) wiring. Actually, I've taken many pictures, but each is just a mess and I think will make it harder. We have ~7 ...
2
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0answers
617 views

Can stranded wire in a crimp (bootlace) ferrule be used in lieu of a pigtail to terminate to devices that require solid wire?

As we all know, some device termination types do not accept stranded wire (14-10AWG), which is quite a shame on a conduit job or when using stranded THHN for pigtailing. However, in some applications,...
2
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0answers
667 views

convert three way circuit to two single pole circuits

I have two three way switches within arms reach of each other for the overhead lamp in a small hallway. I want to take them out and replace them with single poles the second to operate under cabinet ...
2
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1answer
2k views

Wiring a ceiling fan with light to a box which has 3 cables running into it(white, black, red, and bare)

i am replacing a light fixture with a fan. I already installed the fan rated box but the box has 3 sets of wires coming in. 2 of the sets have a red wire and all three have a black, white, and copper ...
2
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1answer
845 views

Want to add a WIFI thermostat, but no 'C' wire… only 2 wires to each thermo

i have a 5 zone radiant floor, oil fired heating system. Each thermostat only has 2 wires running to it. i have a TACO SR506 switching relay that receives the wires from each thermostat and controls ...
2
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2answers
4k views

Wiring a fan/light/Bluetooth fixture

I am wiring a fan with a white/black/green wires. The cable going to the switch box to fan has an extra red wire that was twisted with the black. I capped the red and connected the matched colors to ...
2
votes
1answer
554 views

New Thermostat installed but compressor comes on immediately

I have a new Insteon Thermostat that I'm using to replace my prior Honeywell t-stat. This is installed to a relatively new HVAC system (both AC and Heat) that DOES have a "c" wire. I've attached the ...
2
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0answers
2k views

My appliances are shocking me…but only me

The metal parts of the fridge, stove, and sink are shocking me. However, when my husband touches them, he gets nothing. I've also found that the metal gates and latches leading to the pastures are ...
2
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0answers
68 views

Replaced a Heat/Light/Vent with a vent only. There does not seem to be a hot wire:

The three gang box previously had a HLV combined switch plus a switch that operated a separate light. Stupidly, I removed and discarded the switches and units (light and HLV) without studying the ...
2
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0answers
2k views

Why does my new lamp hum while turned off?

I just changed the ceiling lamp I had in my kitchen, from an ancient one (probably more than 20+ years old) to new and beautiful hanging one. I also switched from the old incandescent bulb to a CFL. ...
2
votes
1answer
119 views

New thermostat: How to wire it?

My old air conditioner thermostat broke down, so I bought a new one. But when it arrived, I was horrified to discover that the terminal of the wires were not named the same. Both thermostats have ...
1
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0answers
13 views

Recess can light conversion to hanging light

I have a standard recessed can in my entryway ceiling. I bought a can conversion kit so I could hang a chandelier I brought back from Morocco. When I took the light kit out of the can, there is a ...
1
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0answers
16 views

Room Thermostat, Cylinder Thermostat and Central Heating pump wiring

I have a water cylinder that is heated from a wood burner with a back boiler. The cylinder is also connected to the central heating system (via coil inside the cylinder) and a separate pump. When ...
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0answers
24 views

Pretty basic Honeywell Wireless Thermostat Questions

I thought I knew at least the basics of how the Honeywell Thermostat worked, but testing with a multi-meter dashed those presumptions. I have another question posted, but until I get the basics ...
1
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1answer
112 views

How can I pull cable through wood and metal framing without damage?

I had to install a new wire for my water heater (higher amperage/bigger wire), and was drilling through the wooden top plate to snake the wire down the wall to the pass-through. Everything seemed ...
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0answers
15 views

Strange behaviour with 4 zone central heating timer (John Guest TM4 / Heatmiser TM4)

I have a 4 zone heating timer (HW, Underfloor Heating, Towel Rail and the 4th zone is unused). I moved into a new build a few years ago. After 3 years my heating timer unit (John Guest TM4) started ...
1
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1answer
48 views

Wiring a new GFCI outlet and switch in same box

We bought an old house to renovate and came across this situation in a bathroom and it is definitely not up to code. There is a regular outlet and a switch to lights above the mirror near the sink. ...
1
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2answers
46 views

Can one of my three-way switches be configured to use a remote control?

I want to put my outside flood lights on a remote control. They are controlled by two separate switches in two different rooms. One switch on the second floor and the other on the first floor. I want ...
1
vote
1answer
60 views

Where should I connect my C-wire on my old Goodman unit (GMP075-4 rev 13)

I want see if someone help me on hooking up this new Honeywell thermostat with Wifi I just purchased. I have an old ac unit and I only have 3 connections to my circuit board which does not have an ...
1
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2answers
39 views

Cannot find the common wire in “box #2” on a three way circuit

I have a three wire circuit wired incorrectly and it doesn't work the way it should. If the switch with the hot wire is switched on (Box #1), the other switch works as it should (Box #2). However, ...
1
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2answers
60 views

Adding a new light fixture to existing circuit without destroying the walls/ceiling

This may be a stupid question, but is there any way to add a light fixture at the top of the staircase without directly wiring it to the existing light fixture at the bottom of the staircase? There ...