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Questions tagged [junction-box]

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

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2answers
15k views

Bathroom vanity light with no junction box

I just removed two bathroom vanity lights to replace them and discovered that there was no junction box behind either. One light was mounted over a stud and the other was right next the a stud. At ...
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0answers
58 views

Running New Electrical Line

I found a junction box under my deck that has grey cable, with each individual wire wrapped in the gray sheathing. So for example, the white wire has the white insulation around the copper wire, and ...
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2answers
199 views

How do I knock out only the correct sized knock-out with Carlon A238 ENT boxes?

Carlon A238 plastic boxes have three ring knockouts for 1/2", 3/4", and 1" conduit fittings. When trying to knock out for 1/2", the 3/4" breaks out as well. How do I prevent this, or if it's already ...
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1answer
129 views

Makeshift Junction Box Cover

I'm about to cover up some junction boxes in my ceiling, they need a cover and I got the wrong size at the store. I have some metal flashing laying around from working on my roof would this be safe ...
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2answers
2k views

Check if metal junction box is “charged” from bad wiring

I was painting a joist in my basement and my roller bumped a junction box and sparks flew out. I suspect that a hot wire is touching the box. I was going to take apart the box and replace it with a ...
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2answers
3k views

Octagonal Electrical Box Wire Capacity

The wiring for a bathroom light and a receptacle are in a 3.5 x 1-1/2 in. octagon electrical box. Is this the correct size for this number of wires? There are 3 blacks, 3 whites, 1 red, and 3 grounds. ...
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2answers
325 views

How Do I Adjust the Depth of an Octagonal Junction Box?

The junction box for a wall mounted light will be 1/4 in. shy of the finished drywall. The house is 50 yrs old. How do I adjust the depth of the octagonal junction box? Is there a safe way to shim or ...
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2answers
4k views

How do I convert a service panel to a junction box?

I'd like to convert my existing 100-A panelboard to a junction box (a new 200-A panelboard is being installed about 15' from the existing panel). My naive question: are there any particular rules to ...
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2answers
879 views

Can I splice wires in an old ceiling light box and should I add a ground conductor?

We have a beautiful house built in the 1920s. I was changing over a light fixture when I found that the ceiling of the room is wired with rubber wrapped 12(?)gauge wire that goes into a metal pancake ...
2
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1answer
489 views

Do I need to cover an unused punched out hole in a junction box? If so, how?

I removed a Romex cable that was going into a junction box top middle opening(you can see in the picture). There is still an opening at that punch out. Is it okay to leave it as is? If not, how ...
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1answer
285 views

Securing Cables at Ends of Conduit Run

As a follow-up to this question, if I have wet/damp location-rated cables going from an outdoor breaker box, up a ~5' SCH40 PVC conduit, and into a building attic, do I need to secure both ends of the ...
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2answers
3k views

Inspector says that split bolts shouldn't be used on live connections. Right or wrong?

I installed a spa sub-panel on the exterior of my house. The inside wiring is NM-B 6AWG wire that goes to a junction box where it's spliced to 6AWG direct bury rated wire (the NM-B wire I had wasn't ...
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2answers
466 views

Should I staple new wires to studs in an existing wall?

I have some wires that were originally pulled through a wall from a junction box to an outlet. The drywall is off the wall right now and I'm doing some work on the wiring. Would best practice be to ...
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2answers
1k views

Acceptable locations for junction boxes in a kitchen

I'm trying to do some wiring in a kitchen with a that's somewhat below grade with a slab floor and another floor above it. I'm going to need some junction boxes for the wiring. Usually I see these ...
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1answer
1k views

Broke plaster anchoring electrical box

I put a little too much pressure on my electrical box when tightening down a new switch. It was previously anchored by what I believe was overhanging tabs on both the top and bottom of the plaster, ...
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1answer
690 views

Can I add a second junction box to house a doorbell transformer?

In the attic I have electricity running out to a junction box. The wire in the junction box connects 2 things. The first one is that it brings power down to a light switch. There's a NM cable ...
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1answer
253 views

Light junction box near water

We are wanting to put in sconce lighting in our bedroom. The junction box would be about 16 inches form our water shut off valves and bleed valves. Is there any issues about putting the lights in this ...
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2answers
279 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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0answers
511 views

Installing new outlet in the middle of an existing run

We're in the process of doing some minor reno in our basement, and we'd like to put our entertainment center in one corner. Unfortunately there's no plug near there, so I want to add one. The ...
5
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1answer
798 views

Is an electrical box fill classified by wires, cables or conductors?

Is a 12-2 NM cable counted as "3" (THREE) wires/cables/conductors since it has 3 wires in it or "1" (ONE) wires/cables/conductors? According to 370-16 with this 3 X 3.5 X 2 box, I can put "8" (...
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1answer
415 views

Run additional wire from junction box to existing light switch?

I would like to replace an existing analog light switch with a wireless one. The new switch requires a neutral electrical connection to work. There is no neutral connection at the existing switch, ...
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1answer
87 views

Electrical Work Question

We had an electrician move our breaker box. He put in a junction box and ran a 100 amp cord, along with other wires next to one of our air vents. Is this to code? We worry that even if it is framed ...
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1answer
183 views

Trying to install Cooper surface LED down light to ceiling but don't see a ground wire

I'm trying to install a Cooper LED down light to a pre-existing ceiling metal electric box that has been un-used. I know to turn off electricity at the breaker and that white wire from light ...
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1answer
1k views

How do I disconnect a garbage disposal from a junction box? What to do with loose wires?

I just removed part of our cabinet during demo and our kitchen has a hardwired garbage disposal to a junction box on the wall. I want to disconnect my disposal during demo and save it for reuse in ...
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1answer
1k views

Decorative ceiling junction box cover [closed]

I know the junction box cannot be permanently covered, but I am looking for ideas for decorative covers. we are taking down a stairwell light fixture and just want to cover it up with something other ...
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1answer
3k views

What can I use to fix a gap between the light fixture and the ceiling?

It's a very old house that the ceiling is made out of lath and plaster so it would be too much work to dig a hole to put in a large junction box for the wires. They won't fit in the base of the light ...
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1answer
983 views

What is the purpose of these removable “collars” on ceramic light fixtures

This fixture happens to be plastic, but all my ceiling juntion box mounted 600w rated light fixtures have a removable collar. I don't see the point in this extra part. Is there some sort of shade I ...
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1answer
5k views

How to tell if old ceiling light box can support ceiling fan?

I want to replace a small hanging chandelier with a ceiling fan and am trying to figure out if the existing box can support a fan. I don't see labeling on the box itself but noticed this large rod ...
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2answers
374 views

Attaching Air Compressor To Junction Box

I have a 4 inch metal junction box with a 3/4" mud ring attached and recessed into the drywall in my garage. I want to connect an air compressor to this junction box directly without using a plug. ...
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2answers
50 views

Building a lamp with a docking station to power my phone. [closed]

I want to make a lamp with a docking station that can power and charge my phone, can I use a junction box to combined both cables so only one cable goes to the plug?
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4answers
9k views

Mount Ceiling Fan to Old Junction Box?

Is there anyway to safely mount a ceiling fan to this type of older ceiling junction box (see the photos)? I rent an old 1920's built house where an old hanging light fixture junction box was covered ...
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1answer
1k views

Round hole, rectangular junction box

I am installing a new light fixture into ceiling. There is a round hole there right now (from a recessed light that I removed). The problem is this round hole is just short in diameter of standard ...
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3answers
2k views

Is this Junction Box too full?

I'm installing a flood lamp on my outdoor garage. So, I went to take look at the junction box, and to my surprise, it appears oddly filled: Filled to the point where I almost feel as though it's too ...
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4answers
4k views

How to properly bond metal junction box with 6 AWG conductors

What is the appropriate way to bond a metal junction box containing a receptacle wired with 6 AWG wire? It seems that most metal junction boxes have a 10-32 tapped hole to accept a ground screw but ...
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1answer
8k views

Wiring a Junction Box: 1 source in, 2 sources out

I have an existing junction box and currently 1 source from the basement going in, and one source coming out and that goes to a wall switch. If I want to connect a second wire to come from that ...
4
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2answers
4k views

Can an open junction box be allowed over an enclosed ceiling?

I am renovating my basement and there is currently a suspended ceiling. After removing some of the tiles I noticed there are some junction boxes without covers. I want to replace the suspended ceiling ...
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1answer
1k views

What exactly does 'Maximum of 8 No. 12 AWG Branch Circuit Conductors' mean?

I'm installing some recessed lighting, the lights are IC and wet location rated if that helps. The plates on the junction boxes attached to the cans say' Mamixum of 8 No. 12 AWG branch circuit ...
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1answer
1k views

Are these black marks near an electrical box signs of an electrical problem that I should be concerned about?

My garage has an electrical box with no receptacle in it, just wire-nutted wires. It came this way when I bought the house. A non-contact voltage tester shows that the black wires are hot. I was ...
3
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3answers
6k views

Connecting Three 12 Gauge Wires

When I purchased our house the previous owners recently installed electric baseboard heaters in rooms A, B and C. I did not want to keep these but needed more outlets so I had swapped the breaker at ...
2
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2answers
87 views

3-inch recessed lighting junction access

I am looking to install 3-inch recessed lighting in room under living areas. I have the ceiling down so I am using a new-work kit with rails and a pan. The lights are sold as remodeling and the rest ...
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6answers
29k 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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1answer
240 views

Does this j-box follow NEC electrical code?

I'm considering buying the following product for a security floodlight install: Arlington 8141-1 Vertical Siding Lamp Mounting Kit with Built-in Box for 1/2 Inch Vertical Siding LAP. It seems to get ...
4
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2answers
16k views

Is there a way to extend electrical wire where the splices can be finished over? [duplicate]

I want to extend some wires to relocate some switches. Normally one might do this by splicing new wires in and covering the junction box with a cover plate. Is there a way to permanently splice wires ...
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1answer
75 views

Is there any easy way to mount multiple single gang low voltage panels in a multi-gang box?

So, a combination of AT&T, Comcast, and the previous owner of my house and made an absolute mess out of the area I'm wanting to use as the network hub of my house. There are five outlets, one for ...
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2answers
1k views

Is it possible to convert an octagonal electrical box so that it can house 2 Duplex outlets without changing the shape of the box?

I currently have 1 Duplex outlet installed in an octagonal box mounted on the ceiling. I need to add another outlet to make it a 2 gang. However, I can't find a cover that will hold a 2 gang outlet ...
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2answers
5k views

Ground wire is hot, drop ceiling carrying current?

I am no electrician by any means but I have ran thousands of feet of wire, hooked up receptacles, lights, hot water heaters, breakers, etc... the average things with never an issue. I ran some new ...
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1answer
1k views

What is this electrical junction box? (re: adding 3-way switch)

I'm trying to replace an existing switch (at the top of the basement stairs) with a 3-way switch by adding an additional switch at the bottom of the basement stairs. The existing switch box has 4 ...
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2answers
7k views

What are these “GENTEX” things on my walls?

My condo has these devices installed in each bedroom and in the living room; but I have no idea what they're for.
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3answers
4k views

How can I install an electrical plug without a stud nearby?

I need to place an electrical outlet where there is no stud. Where can I find outlets to do this?
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1answer
6k views

Can I put the junction box for an exterior wall fixture inside my garage?

I have an exterior, wall-mounted light fixture that I want to attach to my new garage. It looks like this: Here's a PVC board the contractor left to mount it. There appears to be OSB sheathing board ...