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Questions tagged [junction-box]

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

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1answer
139 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
491 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
187 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
130 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
142 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 ...
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1answer
182 views

Can I install junction box on a basement rim joint from inside

I am pulling wire from my basement for an outside receptacle. I drilled a hole through the rim joist. To secure pvc pipe from inside, I wanted to install a junction box on inside, and use a metal box ...
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217 views

Wifi Light Switch won't fit in my electrical box

I am fitting wifi light switches. My back boxes are square metal, but the dimmer switches are all round euro style. Is there a way to utilise these without repairing the wall. Perhaps a converter ...
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2answers
589 views

Are splices made with insulated cable connectors required to be inside a junction box?

I have a need to splice a 6/3 romex and 4/3 romex in my attic. It would look something like this: 4/3 |-- (6/3) new destination -----| |-- (4/3) original destination I am looking at ...
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3answers
1k 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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2answers
3k views

What is the purpose of this grounding screw in a plastic electrical box?

Upon inspecting my light bulb socket in the garage of my new construction home (2018), I found a random grounding screw which wasn't wired to anything but attached to some bar. Does anyone know what ...
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1answer
1k views

Remove old ceiling pancake (pan) junction box, or how to work around bolt in that box?

I'm having a difficult time removing an existing ceiling junction box/pan. There was a nut holding the bolt in the center. I thought the nut was holding the box in place, but even with the nut gone ...
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1answer
463 views

Wiremold Ceiling Fan Box not compatible with Harbor Breeze mounting bracket. How to fix?

I am surface mounting a Harbor Breeze ceiling fan directly to a wooden beam using a Wiremold Metal Ceiling Fan junction box. The wiremold box has two #10 screws which go from the back of the mounting ...
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2answers
2k views

Options for mounting a ceiling fan box directly to interior wooden Ridge Beam

I am tasked with mounting a ceiling fan w/ light in an interior master bedroom that has a wooden ridge beam (covered with textured drywall) going down the center of the vaulted ceiling. Since the ...
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1answer
434 views

Can I use a gutted sub panel as a junction box

I am going to be replacing my all in one 100A breaker panel with a 200A panel. The old panel has the ground/neutral bus at the bottom of the box and the wires are cut too short to reach the bus bars ...
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2answers
234 views

Can I cut the protruding conduit to the floor level and cover it with junction box?

I've removed the old island which had the electric range, with the conduit coming from the crawlspace: The junction box was attached to the back of the cabinet holding the range. But the new island ...
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2answers
804 views

Should the wiring to my recessed light have a strain relief and a ground wire connected?

I had this can light installed by a contractor. It was not attached to anything, just resting on top of a hole in the ceiling. The cable is not entering through the plastic grommets. There are no ...
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2answers
594 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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3answers
2k views

Are splices required in a junction box?

If I have a conduit with 6 wires (3 separate circuits), and I want them to split at some point, can I send the conduit (A) to a 4-inch square junction box and then send 2 wires to leave the junction ...
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2answers
1k views

OK to bundle wires together with colored electrical tape?

I have 3 bundles of 3 12AWG THHN wires each, black-white-green (red tape) black-white-green (blue tape) black-white-green (black tape) these 3 bundles come out of the load center and into 1/2 EMT. ...
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3answers
222 views

Can I split off a 20a with a conduit body?

So I am coming out of my subpanel with 1/2 in metal conduit and using metal handy boxes with NEMA 5-20 for all the receptacles on my two indoor branch circuits. One is dedicated for a window unit AC. ...
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2answers
212 views

How to open this electrical junction box?

I have an electric blanket where the insulation has escaped from its clamp. Totally easy fix, as long as you can get into the fitting. But there are no screws or anything. There are three recessed ...
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0answers
43 views

How to screw using the holes in this enclosure?

I have this enclosure: I wonder how I can connect some PCB (consider it as a plate where I drill holes) in to the holes from the enclosure (the 6 smaller holes in the bottom, where you can see 5 in ...
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1answer
68 views

Need help identifying ground screw

I am installing a chandelier and there is no ground wire in the metal junction box, but there is a screw with a copper wire already running to it. The wire runs up through the box. Is this the ground ...
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3answers
1k views

240V/60A circuit in PVC on the ground

This home has a PVC pipe running from outside the garage, to a pool+spa setup. The electrical circuit seems to be carrying 240V/60A - (primarily for the water heater). It runs on the ground beside a ...
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2answers
502 views

Query: 2 cables in 1 junction box

Please see image A below. Previously attached was a 3-bulb fixture. I have replaced it with a 4-spotlight bar successfully by copying the previous wire configuration. Lacking the background, the ...
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2answers
741 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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3answers
4k views

Damaged Wire Insulation

I opened an electrical box today to a bit of a surprise - a little bit of exposed conductor on one of the wires! As far as I can tell, there is no damage to the conductor (12 gauge). Note that this ...
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3answers
3k views

Ground wire from the junction box

Background: I am a regular DIYer just starting out. My question is regarding the ground wire while installing a chandelier. I have just moved to a new location in Ontario, Canada. The house was built ...
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1answer
321 views

Plastic junction boxes and covers in floor?

Our family room is currently being remodeled to include a raised/tray ceiling. Once the drywall was removed from the ceiling and the plywood removed from the attic floor above the family room, it was ...
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2answers
1k 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
651 views

How to Use GFCI Square Cover?

I have a 4" square box which I'm going to put a GFCI outlet in. I got one of the raised covers with a rectangular cutout for GFCIs. However, the outlet itself doesn't sit flush with the cover. When ...
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2answers
916 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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2answers
103 views

Can I run a new independently-switched light from a box in a four-way switch circuit?

I'm doing some renovating and where I want to put a closet I'd like to put a light. There is a junction box there which appears to have been used as a light before and would be ideal. It has only 1 3-...
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1answer
2k views

Installing an electrical outlet in my attic?

So before it snows and gets colder outside I would like to install an electrical outlet in my attic. I'm gonna hook up a light to it. In my attic there is some wire running along the beams, could I ...
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4answers
10k views

Light fixture mounting bracket too small to attach to junction box

Installing a ceiling fixture. With the other fixtures I installed the bracket just screwed into the box. This one the bracket width is too small to screw in, the box is too big. What kind of adapter ...
4
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2answers
5k views

Identifying wires in junction box

I have a fixture to change in my apartment. There is a black, a white and a red wire in the junction box. The old fixture was connected to the white and red wires only. This led me to believe that ...
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1answer
1k 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
2k views

NEC code regarding grounding and conductor pass through

I am adding a mini split system to my house which currently has a smaller air-conditioning condenser in place. In brief, the house is very old so we opted for a ductless mini-split over trying to ...
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2answers
260 views

Need help with installing Ceiling light

I'm trying to install a ceiling light. I found a convent place to put a on/off switch. There is a receptacle at the bottom of where I would like to add the on/off switch for the light. So what I ...
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1answer
1k views

How many splices can a junction box contain?

Im passing 2 circuits and a ground from LB to junction for backyard outside circuits. So two neutral, two hot, and one ground 10 awg. The LB box screw fell into the vertical pvc conduit last minute,...
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2answers
4k views

What is this thing on my junction box?

This thing is on my junction box but i don't know what it is or what it's for.
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1answer
76 views

Added a celing fan in bedroom, need to wire for switch

I recently added a box to install a ceiling fan in our bedroom. We want to convert the single switch in the bedroom to a dual switch. The single switch thats currently in, turns on power to the top ...
3
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1answer
909 views

Removing old electrical box in ceiling

I have hit an obstacle in my quest to replace my light fixture. The current electrical box in the ceiling is a very old type as shown in the picture I attached. How does one go about removing this? ...
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1answer
103 views

How is this junction box intended to be used?

I am in Europe and recently purchase this junction box: I have two questions: What is the intended use of the two brass colored busbars versus the three steel colored busbars? What is the intended ...
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1answer
1k views

Making a switched plug hot all the time

My house was built in the 70s so most of my outlets are on a switch in which the bottom is always hot and the tops are controlled by the switch. I'm installing recessed lighting and I'm going to use ...
3
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2answers
840 views

Confusing Junction Box

I'm dealing with a junction box for an outdoor patio wall sconce that has three separate sets of black/white/ground. House was just painted, and the old sconce was already taken off, so I had nothing ...
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1answer
517 views

Different options to convert brick wall outlet box to junction box with more outlets

I have a dedicated 20A circuit that comes into my kitchen area as a duplex outlet: During the upcoming kitchen remodel this circuit will likely be the best one to provide power to the very nearby ...
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0answers
292 views

Dimmer Switch Installation in Multi Gang Box

I want to install a smart dimmer switch in a 3 switch box (which requires neutral). However the one switch I need to replace is one of the simple toggle switches with 2 black wires connected inside ...
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1answer
129 views

bathroom junction box has more wires than expected

I want to install a new light over the bathroom vanity. I removed the cover plate of the existing fixture. Looking at the instructions for installation I was expecting one black wire, one white wire ...
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2answers
8k views

Junction box with screws 2 3/4“ apart, but fixture needs 3 1/2”

I recently bought a new fixture for my back patio light. (Just replacing an old halogen motion-detector light with a new LED motion-detector light.) Unfortunately, the mounting bracket for the new ...