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Junction Box Problems
An electrical junction box is a container made out of metal or hard plastic that contains the
junctions or intersections for electrical connections. These help the wiring in the home or public building interface with the main power supply provided by a local utility. The general purpose of a junction box is to conceal the electrical junctions from sight and to keep them from being tampered with. Here are some of the frequently asked questions answered by Experts regarding junction boxes.
Is having a junction box fitted into the wall a violation of the electric code?
It is not against the code as long as you take care to see that the junction box is not buried behind the sheet rock. You will need to install a blank cover over it as the code dictates that every splice needs to be accessible.
Is there a electrical code that specifies if a junction box is required in a crawl space of a house or can taped wires be left in its place?
It is imperative that all joints and wire connections be enclosed in a junction box. This is a clear violation of the electrical code. If you find lose wires that are not enclosed in a junction box, you should call the utility or the local electrical inspector about the wiring immediately.
The junction box in my bathroom consists of two blue, two brown, and two grounding wires. I wired a non-switch light fixture by connecting the proper colored wires to the fixture. However the wall switch did not shut off this light, but the other overhead lights went off. By using a tester, I can find that one of the brown wires is 'hot' when touched with the tester to either blue wire. How should I go about correcting the wiring?
It would be ideal for you to use a switched fixture for that installation. You need to connect the wires of the same color to each other. The brown wires need to be connected together with one lead of the fixture and the blues together with the lead of the other fixture. The
needs to be located on the fixture itself.
The junction box where my old electric cooking range was connected has a black wire, another black wire with a red stripe and a bare silver wire. Now the new cooking range I purchased has copper red, black, white and bare wires. Do I need to have the wiring in my home replaced?
You need to update your wiring in order to conform to the electric range wiring code. A 3-wire range was acceptable in the past but the new code today stipulates 4-wire with limited grandfather code acceptability. You will need to consult your local governing authority and your local Building Codes department who can help you to conform with the latest rules.
I would like to know if a junction box would be allowed in the ceiling of a shower as I need to replace a bath fan in the bathroom downstairs and the existing wiring is slightly short to make the connection to the new fan. Can I place a junction box to connect the existing wire to some new wire?
Case details : The shower pipe protrudes 11 inches below the ceiling and the shower head where the water exits is 15 inches below the ceiling.
It would seem alright to place a junction box where you intend as long as it is protected from an overspray from the shower. The area you are talking about could be classified as a “wet location” by the local inspectors. In order to fix this problem, you could use a blank cover which is marked “Suitable for use in wet locations” or “Suitable for use in damp locations” over the junction box which should be sufficient protection.
Is it legal to have a junction box in an attic? Should this be suspended over the insulation or should it be attached to the ceiling just below the insulation?
It is alright to have a junction box in an attic as long as it is accessible. You may suspend it over the
since this will be visible and accessible to people in future.
Since junction boxes and their placement need to adhere to the National Electric Code (NEC) it is important for people to be aware of what is legal and what is not. Sometimes, in trying to fix a problem, the electric code may be violated unintentionally. In such cases it is always wise to ask Experts will answer your questions and clarify your doubts easily. What’s more, asking an Expert can at times be quick and affordable.
Recent Junction Box Questions
hi, Im not an electrian (obviously) but I am a Hvac technician
hi, I'm not an electrian (obviously) but I am a Hvac technician and I do have a familiar background in electrical. I mounted a tv and I was able to fish a wire from upstairs to downstairs (drop ceiling) I found a junction box that has four 14/2 wires going in, now before I spliced the wires I checked to make sure it was continuous line to make sure it wont power off if the lights are shut, and I was successful. Now I got the plug to work however it seems like the plug or the power isn't strong enough to power both TV and my Cable digital box. I was wondering if maybe there's too much power being drawn from that junction box and if I should just make a dedicated plug straight to breaker or the plug can be defective maybe?
I need some help with hooking up a hot tub. I plan on running
I need some help with hooking up a hot tub. I plan on running 6/3 romex inside the house (uninsulated ground). I cannot run it directly into the spa panel because the wire has to exit the house and then run about 60 ft around the house to the spa disconnect (no access to the back of the house due to an addition with no crawl space underneath). I have no interest in burying the conduit. We are fine with it running along the house it self. My question is- the 6/3 is cheaper than purchasing all #6 THHN wire. Can I purchase the 6/3 for the whole run (about 100 ft), strip the jacket off of the exterior portion (60 ft), remove the uninsulated ground on the exterior portion and connect #6 THHN insulated, and then run all 4 wires through liquidtight to the spa disconnect panel? Should i cut all 4 wires and then reconnect them with wire nuts or can I just cut in the insulated ground to replace the non-insulated? I assume I will put the connection(s) in a junction box inside of the house?
Hi, I have underfloor heating mats installed under tiled floor.
Hi, I have underfloor heating mats installed under tiled floor. The two mats total 2250 watts. I have a 13amp fused switch next to the thermostat.
The fused switch feeds the thermostat using standard ring main cable 2.0/2.5mm?
The problem is the fused switch starts to get warm to the touch, as does the back of the thermostat after the heating has been energised for a few minutes.
I took the switch off the wall. The live and neutral feed wire from the fusebox to the switch feels cold / normal to touch. The load wire from the switch to the thermostat feels warm (not hot). The feed and supply cable is of the same rating.
I do not know what is causing them to warm up. They are very tighly connected and I have tried re-inserting and tightning the cables with no luck.
The two 1kw mats join together at the thermostat and both mats push into the thermostat. Could this be the source of the heat? Should I be connecting those two mats into a junction box with one load cable from the thermostat to a junction box.
I might add that this has been like this for a couple of years, and was originally installed by a qualified electrician so its not one of my DIY failures this time ;)
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