Electrical – Can you run a junction inside an outlet or recessed light

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I have been working on finishing my basement and am starting my rough in electrical. I am learning as I go and have gotten most of the basics down.. calc load, box size, stapling, supports etc.

One thing I cant figure out is if you can have a junction within a live outlet or recessed light. Ideally I would like to run a Y from my last recessed light can with one line going right, to a receptecle and one going left, to the end switch. I am guessing this is against NEC code but have been unable to find out for sure, partly because I am unsure of the correct terminology for it.

Can someone point me in the right direction? Is this even called a junction? or is it called something else like a branch?

I am getting a pro to do some of the finish connections but I am doing all of the rough in.

Best Answer

Modern recessed lights have junction boxes built in.

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Similarly on a new work recessed fixture

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You are free to daisy-chain other lights or receptacles, so long as you connect properly and do not exceed the number of wires for the size of the built in box. A chart to calculate this can be found here.