Questions tagged [junction-box]

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

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5answers
2k views

Ceiling fan electrical box missing female screw holes

I have an existing electrical box that appears to support ceiling fan installation but it is missing the 2 female screw holes I'm used to finding in these boxes. Is there some sort of intermediate ...
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1answer
53 views

Grounding metal electrical boxes

I would like confirmation on the following: Is any metal box automatically grounded if it is supplied by an armored cable (without a ground wire) that is properly connected to the box and back to the ...
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1answer
64 views

Does a cover exist for a 3.5 inch round electrical box?

I have a 3.5 inch round electrical box in the garage that is being used as a junction box. The inspector says that it has to be covered. However, I am unable to find a 3.5 inch pvc cover for this box. ...
3
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1answer
84 views

How can I mount a light to a square junction box?

In my entryway, there is a lighting fixture box that is sticking out of the ceiling drywall. (See attached image below) The box is 4 inch by 4 inch. I assume that it came with some kind of ceiling ...
2
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2answers
91 views

I opened a light switch and found an unterminated wire in the junction box. Is this unsafe?

I switched of the main circuit breaker to the house and opened up a light switch to see if I had a neutral wire, so I could buy a smart switch. But when I took off the plate I found what appears to ...
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2answers
36 views

Adding a ceiling fan to circuit of light fixtures

I have 4 recessed 40 watt lights in the ceiling of the living room. They are all on the same switch (circuit). Can I add a ceiling fan to the room and splice the conductor into one of the 4 J boxes so ...
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1answer
100 views

How to move a junction box?

Hi i want to move a junction box that's behind my back splash into a cabinet but so i should be able to access it as needed according to the code but the wires from the top and bottom are exact so i ...
2
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1answer
119 views

Can I use the same junction box for two appliances?

Complete noob here. I'm finishing building my kitchen and the last part - the wiring of electrical oven and glass cooking plates, is presenting me with some challenges. I am located in Germany. ...
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2answers
43 views

NM cable from wall box to dishwaster

I need to connect my dishwasher to an electrical box in the wall under the sink but it is recessed so the cable must come out through the front plate and not side knockouts. Out of the same box will ...
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2answers
67 views

Romex exiting junction box just below 8 feet

I am installing new outlets by drilling up from the garage between the wall cavity and fishing romex up. As seen in the picture: I had my first inspection and the inspector called out that the ...
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2answers
69 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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1answer
28 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 ...
2
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1answer
116 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 ...
2
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1answer
70 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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1answer
101 views

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 ...
0
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1answer
127 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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1answer
281 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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1answer
102 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 ...
2
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2answers
53 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?
2
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1answer
67 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
352 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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1answer
101 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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2answers
84 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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1answer
258 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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1answer
31 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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1answer
83 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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2answers
125 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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1answer
515 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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1answer
34 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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3answers
221 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 ...
2
votes
1answer
576 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 ...
2
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3answers
509 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 ...
3
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1answer
144 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
156 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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1answer
63 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
96 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 ...
4
votes
2answers
67 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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3answers
653 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 ...
9
votes
4answers
3k 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 ...
0
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1answer
67 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
122 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'...
2
votes
2answers
248 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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0answers
168 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
32 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
317 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 ...
0
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1answer
122 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
481 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 ...
0
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1answer
166 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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1answer
118 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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1answer
135 views

Attic Fan Box Vapor Barrier

This past weekend I installed a ceiling fan to replace an already existing light fixture. I had to replace the plastic electrical box from when the home was built in 1992. I am unable to get into the ...