Questions tagged [junction-box]

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

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2answers
89 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
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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1answer
82 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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60 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
100 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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66 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
504 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
132 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
126 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
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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2answers
285 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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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
470 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
64 views

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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3answers
345 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
632 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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70 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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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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1answer
84 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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4answers
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
4k 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
50 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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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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1answer
37 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
52 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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1answer
38 views

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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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
804 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
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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1answer
127 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
1k views

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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1answer
427 views

Code requirement that wall box be tight to drywall?

Just wondering if I need to pull out and replace an old plastic electrical wall box that sits a good 3/4" behind the drywall? Seems like you would want a tight fit for heat sealing, but is there ...
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2answers
208 views

Electrical Help: Swap 50A Range for separate Cooktop & insert Oven (30A each)

House has a 50A, 3-line service to the old Range. Want to instead have a separate Cooktop and an insert Oven located below it for a sleeker more integrated look. Each have a 30A requirement. Can they ...
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7answers
4k views

I need 30 amps in a single room to run vegetable grow lighting. How to accomplish?

I have an 1800sf home with a 200amp service. I want to convert family room into an indoor vegetable growing room. The lighting (which will be on as much as 18hours/ day) will need 3.8amps each and for ...
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1answer
221 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
28 views

How do I mount a second ceiling light from the same junction box

Have an existing ceiling fixture (pendant) that is wired to a switch. I'm interested in wiring another light to the same fixture, A simple track light like this one. I understand that as per code, all ...
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2answers
938 views

Do GFCI outlets require more than standard box volume?

I purchased 2 Carlin 2-gang old work box with max cubic in fill limit of 25. These are being installed in a garage so each receptacle is gfci. I have wired them in parallel so there is a pigtail in ...
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1answer
117 views

Box fill calculation example

I have seen a few examples on here of boxfill calculations but not one where the box is directly attached to a light. So if possible please verify if these calculations are correct: 3 14/2 nm romex ...
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2answers
136 views

Why do pigtails not count towards box volume capacity

I would like to know why pigtails are not included in the volume count for outlet receptacle boxes. I recently upgraded to a two way outlet and had a total of four 14/2 wires coming into the box and ...
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3answers
533 views

Electrical Wiring - New Circuits (Added pics)

I have run two 12/2 Romex “Home Runs” to a junction box, each for 120V to Circuits A and B. T-off at the junction box, two 12/2 Romex lines split to one 2-gang box, and two more 12/2 Romex lines split ...
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1answer
183 views

Ceiling Light Installation: Junction Box or SLIM Led Driver Differences

What are the advantages/disadvantages between using a Junction Box Ceiling Light Installation or a Slim LED Driver box installation? My ceiling has space to incorporate either option. I am wondering ...
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1answer
75 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
189 views

How to align electrical boxes/plugs?

A wall of a second-floor full bath (in TX) has the following outlets. The middle box is for a phone wire! I plan to remove this box. This box is nailed to a 2 by 4 above it that is running between ...
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2answers
54 views

Electrical box fill calculation

Take a look at picture of 2 switches , both are for single gang only (except left one is dimmer switch). As per NEC single pole switch device has fill volume of 2. My question is, switch on the left ...
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1answer
62 views

Tips for getting cables through old work box knockouts and into wall

I’m replacing a botched 3 gang switch box (formerly consisted of two incompatible boxes together, cover plate did not fit right). I have clamps on all my cables and am ready to put them through the ...
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1answer
49 views

Calculate box volume needed with light

I think I know the calculation for this gang box, but I want to double check. Specifically, does the light count as a "yoke"? This is a 15A circuit. Per my other question (Calculate ...
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1answer
410 views

Maximum number of wires allowed for junction box

Please take a look at attached pictures of my can light junction box. Outside says max 8 14 AWG conductors. It also says 10 cubic inch is J-Box volume. Inside, there are 3 push in connectors (for hot, ...
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2answers
142 views

Can I use metal knockout for additional NM cable?

My can light junction box has 2 black clamps for NM cables and there are 3 metal knockout holes on 3 sides of junction box. (Picture shows one of these 3 knockouts). Given the location of LINE wire ...
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2answers
81 views

Is a junction box required in my situation?

I’m moving my vanity light fixture (from where it was on the left to the hole on the right), and the cable is just barely too short to reach the new location (in particular the ground wire). I’m ...
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1answer
71 views

Through wall to surface mount box?

I've got a surface mount box mounted to the drywall. I now want to run an outlet to the adjacent room on the other side of this wall, but not directly lined up with the existing box. Is there any ...

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