Questions tagged [junction-box]

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

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20 views

Should I replace ELV 12V transformers with LED drivers?

I have 3 pendant lights, each with its own ELV 12v transformer stuffed into its junction box, controlled by a Lutron MA-PRO dimmer that supports ELV, MLV, LED, and incandescent lighting. I would like ...
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1answer
78 views

How do I run wiring past this octagon box?

I have a 4" x 1-1/2" octagon box with 1/2" and 3/4" knockouts mounted to a 2x4" rafter in my shed located in Indiana. I'm putting a NEMA 5-20 outlet in the box and I'll have a ...
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4answers
66 views

How do I remove an old ceiling junction box to install one rated for a fan?

I want to replace a light fixture in my house (1950s construction) with a ceiling fan. I doubt that the existing box will support a fan. I see the big screw in the middle of the box. Is it holding ...
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2answers
112 views

How to permanently get rid of light fixture?

I'm renovating a bathroom, and there is one light fixture that I'd like to permanently remove. I know that I can't leave the junction box in the wall once the fixture is gone, but I have two related ...
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1answer
48 views

Junction box down-sizing when using oversized conduit

I'm running 4 x 4AWG copper wires through 1-1/4"conduit. I have 6 elbows in the 125' run so I need to insert a junction box before the last two elbows. It will be a straight pull through the junction ...
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25 views

Plastic Ceiling box

I have a 10.5 lb. 42 in. ceiling fan. the existing box installed by builder is a deep rectangle plastic box which is attached through the top to sistered stud attached to a joist.
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3answers
6k views

What is this fastener attaching electrical box to concrete wall and how do I remove it?

I have a ranch house built in 1985 in Pennsylvania. The foundation is poured concrete. I want to replace one of the electrical boxes in the basement with a 2-gang. What is the white plastic fastener ...
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1answer
47 views

Are junction boxes needed for LED strip light wiring splices?

Are junction boxes required for 24v splicing in the United States? Are small plastic enclosures sufficient or would you use standard junction boxes for 110v? The application is a 24v lighting system ...
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1answer
31 views

Marine Exterior Lights on Seaside Home

On a residence located about 20 feet from the ocean in a severe weather climate. I am contemplating putting stainless steel well sealed marine lights on the house for some exterior deck lighting and ...
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1answer
72 views

Mounting Ceiling Fan to Old Junction Box

I would like to install a new ceiling fan, but when I removed the light fixture I found an old junction box. The box is about 3 inches deep but tapers to create a rim which is level with the ceiling. ...
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1answer
64 views

Install doorbell transformer on round junction box

Recently installed a Ring doorbell but realized that I need to hardwire a transformer to it. There's no existing transformer, so I'm thinking of wiring the transformer from the front door light (120v)....
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3answers
67 views

Splice new outlet branch in attic

I’m adding an outlet above our fireplace and the “easiest” way is fishing a 14/2 with ground NM down 24” from the attic. Very close to where I want to go fishing is an outlet run in the attic. What’s ...
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2answers
84 views

Metal Junction Box screwed to wood - same screw used for grounding

My brother has a metal pancake box directly screwed into a 2x4. That same screw used to fasten the box is also being used to ground the box. i.e metal pancake box screwed into the wood also has the ...
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2answers
110 views

What is the best way to move this electrical box a few inches?

I need to move an electrical box up about five inches from where it is to mount a light fixture. The wall is drywall covered in plaster. The original box was nailed to a stud. Originally I was going ...
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1answer
45 views

Replacing old 60's junction box with recessed lighting

I want to replace a light fixture that was put in the 60s with recessed light. The junction box looks to be held in place by a metal 'u' shaped bar, with the 'u' bend going over the junction box. ...
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1answer
106 views

The holes in our ceiling junction box are not parallel to the walls. Do I have options other than removing the junction box?

The base of the new ceiling light is a 30” x 9” rectangle. Mounting it as the bracket currently sits would look really bad—not at all square to the room. I don’t need the hole moved much; maybe an ...
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1answer
47 views

Junction box in dishwasher bay

According to the NEC, is it permitted to put an electrical junction box inside a dishwasher bay behind the actual dishwasher? If it ever had to be reached, which I hope is never, the dishwasher ...
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67 views

Are rubber grommets OK for junction box?

I'm looking at options for lighting my basement workshop. I really like these "canless" ones that would mount in the suspended ceiling. Interestingly, some come with junction boxes, but MANY do not--...
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49 views

Old house. Front porch light wiring is piped so need to know how to install an outlet box. Pic attached

I removed the old front porch light and found that the old wiring is being run through a pipe that sticks out about 1/2”. I can’t install the new light because it needs to flush to an outlet box. ...
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2answers
132 views

Why is this 50's junction box so immobile?

This 50s Junction box does not budge. I want to replace both the box and the wire, but neither is moving. The wire won't move because it runs horizontally before the vertical. I'd like to remove the ...
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0answers
57 views

How do I make my doorbell not connected to a light switch?

The transformer for my wired doorbell is connected to a light junction box. The doorbell works just fine if the light (which the transformer is connected to) is turned on using the wall switch. If the ...
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1answer
111 views

Is this a safe way to extend this wiring?

The picture below is just above our cooker extractor hood underneath the first floor floorboards. I need to bring through the 140mm diameter ducting from the extractor hood. I need to do this in the ...
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6answers
21k views

Using drywall screws for electrical boxes?

I am installing the following items: and I am using regular 1 1/4" drywall screws to secure them. Is there any concern in regards to shear strength or rot that would make me regret using drywall ...
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1answer
100 views

Can this junction box wiring be used for a duplex receptacle?

! Hi - this junction box was covered with a plug cover That had no openings in it, just a blank cover over the wall box. As you can see from the image we have two cables entering the box from the top ...
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1answer
128 views

Are these junction boxes suitable for domestic lighting?

I’m putting together some junction boxes for domestic lighting using RS own brand DIN terminals in a suitable enclosure (home automation later would favour grouping the wiring into a limited number of ...
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1answer
130 views

Fastening ceiling box to side of joist

Is there such a ceiling junction box that will allow me to attach it to the side of a joist from inside the box? NB: I have a finished ceiling. I know I can install a support bar and attach a box to ...
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2answers
71 views

adding light to 3 way switches

My daughter's stairway has a ceiling light halfway down but basement landing area. It's dark... it needs light. I installed one of the new LED lights in the suspended ceiling, and ran its feed over ...
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3answers
2k views

How can I remove a cable from a junction box?

I have a ceiling junction box in my garage that has four armored cables coming into it. I want to remove one of the cables as I'm not using it. I don't have access to the back side of the box, because ...
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1answer
100 views

Two circuits in same junction box?

Can two different circuits go through the same junction box? That is, two cables enter from different breakers and they tie to cables exiting, but the two circuits aren't connected except for the ...
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1answer
116 views

How to attach a doorbell transformer to a plastic junction box?

My son's doorbell isn't working, I'm not getting any voltage, and I traced the wiring to the transformer located in the basement behind a finished ceiling used for a light fixture. I would like to ...
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2answers
57 views

Is my 2-gang switch box over-full with 5 cables?

I am installing a dimmer, and I thought there were a lot of wires in this box. It looks like there are 5 cables into a 2-gang box. I tried to draw a little diagram and attach a photo to make it ...
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1answer
152 views

What is the best way to handle house wiring cables with short sheathing?

I'm replacing a couple switches in a bathroom with smart switches and ran into a problem. The previous owner redid the bathroom and the switch box in question had 5 Romex cables (four 12/2, one 12/3) ...
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1answer
87 views

safely de-energizing a junction box so that I can permanently cover it up

I have a junction box in my ceiling that is controlled by a single light switch. I no longer want to use the junction box or have it exposed and I'd like to cover with drywall-- much preferable to a ...
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1answer
56 views

Will this ceiling fan box replacement work in old work hole?

I have had a hanging light fixture in the middle of the living room which I now want to replace with a ceiling fan+light. Nothing huge and fancy... but a hunter nonetheless. The old pan box was, old (...
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2answers
212 views

Garage wiring puzzle

I'm trying to figure out the wiring in my finished garage. It has two ceiling junction boxes, with attached porcelain lights, and three wall outlets. I'll say up front that all of this was done ...
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7answers
3k views

Outlet screwed directly into stud

I was replacing old outlet in my house and came across an outlet that is screwed directly into the studs. Also the stud and the junction box were cut to fit the outlet. The new outlet is too big to ...
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1answer
430 views

Separating 12-3 wire from panel to feed a bathroom fan and light

I am replacing an existing heater, light, night light, exhaust fan unit with a new unit that only contains a light and exhaust fan. The existing wiring has a 12-3 coming straight from the panel with ...
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1answer
354 views

Can you mount a plastic junction box to metal studs?

Inspired by this answer Forget about plastic boxes, they are a wild misfit. They are generally kitted up to nail to wood joists. Can't nail to a steel joist. For a standard "new work" box, I ...
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1answer
63 views

How can I install an exterior porch light where there is no junction box?

I live in an older house with small, exterior porch light fixtures outside 3 doors. Those fixtures need to be replaced. When I pulled the first one off, I found 2 wires coming thru the wall - no ...
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5answers
461 views

Using non-metallic cable with this metal box having armored cable attached?

I'm planning to using this existing outlet to add an additional outlet for a TV directly above. The kit I purchased has a plastic old work receptacle box. Can I use building wire (Romex) into this ...
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2answers
312 views

Can I install NM cable, junction boxes on attic rafters

I'm replacing knob-and-tube wiring, and plan to add blown-in attic insulation afterward. I figure it would be safer to run NM wire on the underside of the attic rafters than to bury it in insulation, ...
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2answers
697 views

Handybox Extension

Can you stack a handybox with an extension outside of the drywall? This puts the total box size at just shy for 4". I know handyboxes can be used with conduit, but can they be double-stacked in a ...
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2answers
760 views

How to wire up a 240 V oven?

I recently purchased a Whirlpool WOS51ES4ES electric oven from Home Depot with the intention of installing it myself. Our old oven is gas, so I need to run a new 240 circuit. The oven draws 20A. I ...
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2answers
69 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
986 views

Are “terminal block” style junction boxes allowed in the US?

In the UK it seems pretty common to see junction boxes with built-in screw terminals that are used only for splicing wires from 2 or more cables together. Typical example: (source) Sample wiring ...
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4answers
4k views

Are these pigtails inside the panel and outside a junction box allowed?

I am concerned about a newer electrical panel's installation, where one of the older load wires, at the main electrical panel, appear to be shorter in length, appear not reaching the desired circuit ...
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1answer
60 views

Any issue with GFCI outlet touching sides of outlet extender?

I have to extend a single gang outlet box to account for added depth from beadboard wainscoting. The box is PVC and so is the outlet extender. The problem is, the outlet is a GFCI and it is very snug ...
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4answers
1k views

Can I wire this light fixture set with the plate mounted directly to the stud?

I'm not an electrician. Light fixture has terrible installation instructions. I bought two. I pig-tailed one. I used 14-2 Type UF for the pig-tail because I didn't have 2' of Romex at the time. In ...
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1answer
23 views

What size junction box do I need for a wall mount with a 3.5 inch base?

I have some wall sconces that have a 3.5 inch round base; will a 3.5 inch round junction box work or do I need one that is smaller, like 3-inches? Do they even make those?
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3answers
139 views

Low Voltage between Neutral and Ground wires in Dishwasher Junction Box

My Bosch 800 series Dishwasher will not function. I plan on swapping the control module. In the junction box, at the terminals, I'm reading 120V between Hot and Ground, and between Hot and Neutral. ...

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