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Questions tagged [junction-box]

A junction box is a container used to enclose electrical connections (junctions).

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Counting Smoke Detector Wires In Junction Box

I want to connect a wire to get power for for a ceiling fan to an existing junction box in the attic that is used right now only for a smoke detector. Box currently has a 12-3 wire coming in, and the ...
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42 views

Mounting an electrical box to screws drilled into the ceiling

A plastic box junction box shall be mounted to a drywall industrial ceiling with two screws. The box will be filled with many low voltage wires before it is brought to the worksite (making it very ...
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2answers
63 views

Part 2 - What sort of ceiling fan support do I need where I can't find framing?

I am return and resume to work on my ceiling fan in the dining room. Last August of 2018, I tried to put it up but the support bar is different than others. I did not know what to do until I saw a ...
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22 views

Moving and covering light fixtures in bathroom

I currently have 2 small light fixtures in my bathroom on either side of my mirror above the sink. My plan is to add a new fixture above the mirror and patch/cover the existing fixtures. It's first ...
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1answer
64 views

How do I remove this old metal ceiling junction box?

There is this metal bar over this junction box which also holds a light fixture. There is also 4 BX cables connected to it in which I am trying to upgrade the existing light fixture attached to it ...
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817 views

Replacing ceiling fan bracket

I'm replacing an old ceiling fan. The old one wobbled a lot even after tightening the blades and trying to balance it. Right now the electrical box is just a plastic one that appears to be screwed ...
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1answer
61 views

Easiest way to connect to a junction box when the wires won't reach?

I got a new attic fan, and the wires won't quite reach to the junction box that the old fan was wired to. What's the easiest way to complete this connection in a code-compliant manner? Everything is ...
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243 views

Can I use a light fixture box as a junction box for a Baseboard

I would like to know if it's allowed to use an octagonal box currently used for a light as a junction box for two baseboard heater ( I need to relocate the current line). The reason we need to ...
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88 views

Run conduit from exterior sconce

We have a sconce on the outside of our brick house on a covered patio currently. I would like to run conduit from it to allow us to place an exterior fan on the same covered porch. My questions: 1) ...
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34k views

How to tell if a ceiling junction box is braced to hold the weight of a ceiling fan?

My new home is almost done being built, and one of the extras I asked for was for two of the rooms to have junction boxes in the ceiling suitable for hanging a ceiling fan in the future. The light ...
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1answer
114 views

Terminating unused wire in breaker box [duplicate]

I have an unused wire that used to be hooked up to the dryer breaker that is "hanging" in the breaker box. What is the correct way to terminate this wire? I don't want to cut it in case we want to use ...
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53 views

OK to attach a metal electric junction box and armored cable (MC) to underside of subfloor in basement?

Is it OK to attach a metal electric junction box and armored cable (MC) to underside of the subfloor in a basement with an exposed ceiling? Or does it have to be attached to the side of the joists in ...
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51 views

How should large, stranded ground conductors be connected to metal junction boxes?

Say I have a #6/3 cable being spliced in a metal junction box. How would the (presumably stranded #8) ground wire be connected to the box?
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1answer
60 views

How do I properly align an outdoor light fixture?

I was trying to install an outdoor light this afternoon. Unfortunately the outlet box is interfering with the mounting bracket. I looked around at a few different lights and it looks like I would have ...
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3answers
171 views

Can I use 14 gauge wire on a 20 AMP electrical circuit? [duplicate]

Running 12-2 Romex cable from the electrical panel to a J-box located in attic. J-box will connect two GFCI outlets and extend a 14-2 cable to the ceiling light fixture box, where other 14-2 cable ...
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74 views

Can I cover an electrical box with tile? [duplicate]

I had 5 outlets moved to under my cabinets. The Electrician put a junction box over the old outlets. I now need to install backsplash. Can the tile guy cover the box with the backsplash?
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78 views

How can I replace the outlets when the boxes are too small?

I need to replace the outlets in my 54 y/o home but the junction boxes are too small to accommodate the new outlets. Is there a way to replace the junction boxes without having to cut a new hole?
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95 views

how is a blank wallplate attached to drywall

Are blank wall plates normally attached directly to a drywall with screws, or it has to be fixed to electrical box?
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86 views

Ceiling light junction box multiple wire detection

I have tried to change a ceiling light and am confused as to why there are so many cables jammed into the box and some of them are burnt. I need some advise as to what to do. I have attached the best ...
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29 views

Hot line creating circuit with ground

Two receptacles and a sconce -- all sharing a wall -- stopped working the other day. I took everything apart looking for loose connections and found the following: The two receptacles only have one ...
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2answers
549 views

Metal electrical box extenders

I have a metal box and conduit outlet in my kitchen where a bar cabinet is going to be installed. I assume it would be way too much effort to rip out plaster and move the box to a new location, so I ...
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1answer
72 views

What is this black cylinder on the side of my electrical junction box?

This junction box houses electrical wiring to a light fixture in a closet. The light no longer works and i'm wondering if this black thing is a possible cause.
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90 views

How should I splice the very short wires for this LED shop light into my 12/2 NM-B?

I'm installing 3 LED shop lights in my basement workshop. I've already run new 12/2 NM-B wire to a few junctions and switches, per light. The attached picture is an example of the final splice I need ...
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322 views

No Junction Box for Ceiling Light

Today I discovered that (at least) one of the ceiling lights in my house isn't mounted on a junction box. As an added bonus, most of the wiring is fabric insulated copper. You can see the single ...
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2answers
446 views

Ceiling fan mounting bracket issue

first time poster. I need to replace a Casablanca ceiling fan in my house that we've owned for a year. The house was custom built in 2002. I bought a Hunter ceiling fan to replace the old one, but ...
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1answer
33 views

Junction box for different unit's circuit

If my basement apartment and main unit have each their own electrical panels, can I have a junction box (located on the ceiling) in one unit that belongs to the other unit? For example, can there be ...
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2answers
24k views

Can I screw a ceiling fan electrical box directly to the joist?

I am putting in a ceiling fan in a bedroom. It is a smaller one approx. 18 lbs. The remodeling-type expander brace failed, so can I just screw one side of the box to the joist? (I cannot access the ...
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3answers
120 views

How to tap into a light switch whose junction box is already full?

I have a light switch I want to tap into to add another power outlet a few feet away. I believe this switch's junction box is already too full to accommodate adding new wires. I think I would have ...
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1answer
325 views

Can I install a device transformer in a junction box to keep it behind the wall surface?

I'm in Oregon, USA, and trying to figure out a code-compliant way of hiding a wall wart (AC/DC transformer) behind a small device (about 3"x3"; if it matters, the specific device is a smart garage ...
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3answers
200 views

I want to install outlet on existing junction box

I tried to install an outlet on existing junction box as below, but failed because it's too small to put in. I have 3 solutions to think. Remove junction caps and put 2 outgoing lines into backstabs ...
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1answer
129 views

How to organize multiple electrical wires going into an ultra thin recessed light?

I am installing ultra thin recessed light in the basement and it comes with a very small metal box (probably 2x4 in in size). Due to the old wiring of the house, there are 5 wires coming in totally: ...
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1answer
107 views

Junction box above ceiling to add second sub panel from existing sub panel feed

I'm posting this question to determine if there is a safe manner to do this that meets code and isn't a redneck solution. The sub panel in my garage is run off a 50 amp breaker that is in my service ...
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2answers
709 views

Bathroom exhaust fan/light combo only fan works

I bought a new bathroom exhaust fan and light combo. It came with two sets of wires, one for the fan and one for the light. It also came with an extra ground for the motor (where should I put that)? ...
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58 views

Individual conduits for each phase to reduce amount of stud being drilled

I'm trying to do some improvements on an existing structure that leaves me little room for maneuvering. I'll break it down as simply as possible. I have two large PVC junction boxes (completely ...
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2answers
981 views

Power wires too short, what to do?

When I see a short wire, what can I do? There are close to ceiling junction boxes on top of the outlets where the wires come from, should I pull the short wire back into them and splice them with new ...
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2answers
63 views

Remove old light box with a stud and nut anchor

I read a post asking this question, but there is no answer for actually removing the box. I do want to remove the box to install a retrofit recessed LED light. My bungalow was built in 1952. All ...
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2answers
55 views

Will ceiling junction box support fan mounting?

Will current ceiling junction box support fan? Not exactly sure if a fan was mounted to it prior as I recently moved into this apartment. Somewhat older of an apartment and box doesn’t directly state ...
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406 views

How to splice into existing underground rigid metal conduit below ground and hide junction box?

I have an existing rigid metal conduit run from the service panel to a junction box location that was previously powering an outdoor appliance. The circuit is 20A and running 12 guage wire. The RMC ...
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4answers
2k views

Do the quick connectors in my new bathroom fan need to be in a junction box?

I recently replaced a bathroom extractor fan. The new model uses "quick connect" electrical connectors, where I stick the house wiring into this little plastic device, and apparently that's all! The ...
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1answer
39 views

Need help identifying function of odd looking switch/connection/??? mounted to 2nd story Fascia

This photo is zoomed in on a gang box that is mounted to the 2nd story exterior Fascia of my buddy's log cabin. We are trying to figure out what this is for as neither of us have seen this before. ...
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1answer
88 views

Mounting box slightly offset in ceiling: is there an offset mounting bracket that I can use to mount ceiling fan?

We're having a new house built, and yesterday we went to check out the progress. They've finished drywalling and sheetrock mudding and we noticed that the electrician installed one box off center. We'...
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6answers
26k views

Ceiling Fan Junction Box Converter/Bracket 1/2 inch width difference

First time poster. I feel like I have researched everywhere and not found the answer I am looking for. I've called a few manufactures of ceiling fans who didn't have any answers either. I began ...
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2answers
199 views

What are the consequences of connecting hot or neutral wires of cables from two different circuits together in a junction box?

Some receptacles in my home required turning off two 15A breakers to kill the power; investigating I found a junction box where hot wires on the two circuits had been connected together. I sorted out ...
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95 views

Does crossbar need to be flush against junction box?

I have a question regarding installing a chandelier light fixture in my apartment. The light fixture I bought came with a standard crossbar and I originally screwed it flush into the junction box. ...
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0answers
31 views

Box mounting point

What are the chances of this setup passing an inspection? 4x4 box is mounted on a stud, relay attached to the bottom 1/2 knockout, transformer will be mounted at the front of the box. This is in ...
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1answer
59 views

Transformer location

I've got a very basic question - I have a 120V to 24V transformer https://www.functionaldevices.com/products/building-automation/details/TR40VA040/ and on the transformer surface it calls out "install ...
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0answers
374 views

Box needed for outdoor porch light?

I am replacing an old outdoor covered porch light fixture with a new LED fixture. The back of the new fixture plate is only about 1 inch max and needs to be flush with the existing wooden support ...
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1answer
818 views

Use 60Amp disconnect as a pass-through to another disconnect

We would like to add a second air-conditioning unit. The original 60 Amp disconnect is grounded via EMT to the panel. The existing EMT will meet code requirements for both conduit fill and derating ...
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2answers
257 views

Electrical wiring/grounding - continuity via metal junction box?

Question about grounding in a metal junction box. I have a 4x4 steel junction box, with 4 cables coming into it. 1 cable comes in from the main panel, 3 separate cables go out to 3 separate ...
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1answer
6k views

Is it against code to create a NM-B to THHN junction inside a conduit body?

I'm installing a 60A subpanel in my detached garage. I'll be running 2GA conductors, to leave the possibility of upgrading to 100A service in the future open. The Breaker I'll be using on the main ...