Questions tagged [junction-box]

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

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2k 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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4answers
364 views

Why does this junction box cover have an "under side"?

This junction box cover is labeled "under side" on the side that is supposed to go inside the box. Why? What is different about this side? Here, for comparison, is the other side. EDIT: ...
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2answers
569 views

What is an acceptable way to ground receptacles branched off of an old 2-wire electrical circuit?

I have a house built in the '50s, and some of the runs are done with what appear to be original 12/2 cloth-sheathed wire without a grounding conductor (just hot and neutral). I'm looking to install ...
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2answers
60 views

Using a Ceiling Junction Box in a Wall (for Vanity light)

I have a bathroom with one light fixture centered above a double sink. I would like to convert this to two light fixtures. There are two areas that make sense for new junction boxes now. I don't ...
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3answers
116 views

Can I float a box between joists to enclose an existing nut splice?

A previous home owner installed a ceiling fan which appears well secured and works well. The wire to the fan was simply spliced into an existing wire using wire nuts but not enclosed in a junction box....
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1answer
85 views

Wire termination under cabinet

When I moved into my home, there was an ancient under-cabinet fluorescent light fixture over the kitchen sink, which I promptly removed. The fixture was just mounted to the cabinet, no electrical box, ...
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1answer
85 views

Can I run a 120 for a receptacle off a 50 amp circuit?

I have a 50 amp wire capped from a previous oven that was removed. I want to put a receptacle in where this is located. When I wire it up my tester shows my hot/neutral reversed no matter how I wire ...
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2answers
112 views

Proper way to connect two 8 gauge wires in junction box?

I need to connect two 8/3 wires together in a junction box. What is the correct type of connector to do this? The two hardware stores I went to had nothing for 8 gauge wires.
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1answer
394 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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1answer
55 views

Running 10-3 wire into a junction box that has 12-2 wire from a different circuit

I’m wondering if code allows 10-3 wire in a junction box containing 12-2 wire from a different circuit? I’ve run out of room to install a separate junction box for a 10-3 splice that was taped ...
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2answers
278 views

Vanity light installation using an old work box

I have a vanity light that weighs 5.6 lbs. The old work box I have is rated for 6 lbs. This seems very close to me. Is there something else I should be using?
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3answers
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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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61 views

Can I put return hot wire from the switch in different color (red for example)

I am trying to install a new light spot in my basement with its own switch. So I understand the whole thing with black-white-copper wire color, so I only need to make another junction box, pull white ...
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1answer
114 views

How to properly transition from NM-B to THWN from an attic to exterior surface mounted panel?

I am running 20 circuits using 12/2 NM-B cable that need to transition to a surface mounted box that is located on an exterior wall. I originally had the NM-B cable entering the knockouts located in ...
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71 views

Junction box nipple hickey

So, I've tried to be resourceful and search everywhere but I can't seem to find a solution. By what I've gathered, my problem might be a "nipple hickey" located in the center of junction box ...
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2answers
545 views

How do I remove electrical box knockouts without spot welds?

I have an electrical box that has knockouts but they aren't spot welded like usual, these look like solid circles. I have attached a picture of what they look like from the outside, what is the best ...
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1answer
192 views

Can I splice UF-B and NM-B in a junction box?

I am trying to determine if it's ok to run UF-B from the meter panel and tie in to the NM-B cable underneath the addition and tying them together with wire nuts inside a junction box. (This is to ...
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1answer
130 views

Ultra thin (flat) cover plate for disabled outlet box?

I'm installing IKEA Pax cabinets around two walls of a large room. I've removed the baseboards so that the cabinet backs can be completely flush against the wall as required. There are two outlets on ...
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2answers
189 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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2answers
287 views

How to remove an old celiing box that doesn't have screws?

I need to replace this old ceiling box. I'm wondering if I have to remove it from the attic (not easily accessible). I don't know what was used to attach it to a joist (or whatever). It's not a screw. ...
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2answers
192 views

What would the box sizing calculation be for 6ga NM and 6ga THHN into a box?

My situation is essentially the same as this question, for reference. I am trying to accomplish the same goal: feeding a sub-panel in an outbuilding from my home's main service panel. I have a 6ga ...
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3answers
5k 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 ...
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1answer
42 views

NM Range/Cook Top Wiring - Under Counter Protection

In order to finish wiring up my range and cook top (Splicing 6/3 wire to multiple 8/3 wires (or even other 6/3 wires) inside a junction box), I will be pulling 10/3 and 8/3 NM wire, respectively, from ...
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1answer
475 views

How do I remove this connector from a solid electrical wire?

I'm trying to replace the light above my kitchen table. The junction box seems to have a solid electrical wire. It was connected to the light's stranded wire with this connector here and also wrapped ...
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2answers
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Ceiling junction box for splice

Can anyone tell me if there are any small junction boxes available out there ? I just want it for the Romex splice in the ceiling , that is it. I don't need that for any fixture. One I found is 4 inch ...
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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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3answers
351 views

Can I splice NM-B cable in the ceiling? [duplicate]

I am moving my bathroom exhaust fan from its current location to 2 feet farther, over the shower cabin. I need to extend existing wire for this. I can't fish new wire because existing wire has been ...
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6answers
663 views

Junction box partially behind drywall and partially exposed

Let's say I have a 200 amp breaker panel that is flush mount. I want to wire in an EVSE across the garage using conduit. Somehow I need to make that transition for the conduit from behind the ...
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2answers
379 views

Junction Box size/type requirement

Can a standard blue junction box be used for indoor wiring purpose? Lets say I have one single gang box of 24 cu. in. which is placed as junction box to connect three 14/2 cables inside it. I know its ...
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74 views

Will stacking 2 junction boxes make inspector Happy?

I had to relocate a 2 switch box to a new wall ( new location). I didn't notice that insulation of two existing cables are damaged. Damn! so I put a electric tape around the cable in damaged area. But ...
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1answer
92 views

Installing fixture with no junction box and off-center stud

I asked a question earlier today here because I took down an old wall-mounted light fixture in my bathroom above the vanity, and was going to replace it with a new fixture. Unfortunately there's no ...
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2answers
69 views

Remove a nail-in box with 3 romex cables and not cut drywall?

Single gang nail-in box for thermostat was about 1" recessed and probably too small for 3 romex cables of 10g wire. Orig. installer 30 years ago left 1.5 inches of sheathing on all cables. ...
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1k views

How can I fix the mounting of these outlets in this box that is taller than the outlet?

I have 4 outlets in my garage mounted in an exposed box where they do not seem to be centered. (This seems to be a 4-11/16" box.) Removing the cover plate reveals that each pair of outlets is ...
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4answers
5k views

"Old Work" electrical box: should it be screwed into the stud?

I'm interested in replacing an existing outlet (in a wall that's finished with drywall) with a two-gang duplex (four outlets total), using an "old work" box. This box is located in the ...
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2answers
52 views

Rigidity (and height) of drywall around outlet hole

We are dealing with a subpar contractor who has tried multiple times now to repair a small section of subway tile that they previously cracked. I suspect that their current strategy is going to lead ...
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1answer
38 views

Mirror with sconce lighting cracked

I am looking for some advice here. I own a cleaning business, and a client is claiming that my staff cracked their mirror. They've been long-time clients, AND are very quick to complain about things ...
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2answers
56 views

Should my light fixture be grounded through the box?

I’m trying to install a new light fixture in Chicagoland. From what I’ve read, junction boxes here do not have a grounding wire and are instead grounded through the junction box. Is there an easy way ...
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4answers
42k 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
1k 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
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Can this ceiling box support a 12 lbs ceiling fan?

I live in a house that was built in 1999, this outlet currently mounts a light fixture. I want to replace the lights with a ceiling fan but I am not sure if the current outlet box will support the fan....
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0answers
27 views

Light switch dimmer

I am replacing a old turn knob dimmer with a new dimmer. The new dimmer has 4 wires, a red, a white, a black and a green. My old one is wired up with two red wires and a black wire, in the junction ...
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2answers
821 views

Complex continuous run vs easier single junction boxes

I am currently in the process of finishing my basement and I am doing the electrical wiring of all my rooms. The work will be checked by my electrician before he connects everything to the electrical ...
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1answer
10k 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 ...
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1answer
51 views

Outlet box between shallow and standard?

Is there an outlet box that's shallower than a standard, but not as shallow as a "shallow"? I need a box that's smaller than a standard, but don't need one that's SO shallow. Hoping there's ...
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4answers
18k 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
880 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
170 views

Do I need to replace the junction box when changing LED downlight

I have 4 LED downlights in my bedroom that I want to swap out for some internet enabled ones. I wasn't the one to install them so I don't know the make/model of them. I took one out to have a look and ...
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2answers
2k 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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Does wire brought into the house have to immediately enter a box?

I need to bring in a new 220v circuit to my basement. Once the conduit enters the basement does it need to immediately enter a box like this diagram or can I just continue the wire to outlet box 20’ ...
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2answers
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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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