Have a waterproof box under garage eve with typical motion detector and two floods. I want to run the switched hot to a relay to turn on additional spots. So need four wires, the hot, neutral, ground, runner to the relay and a hot from the relay back to the two spots. Right now I have a 1/2" X 1" nipple from the box through the wall. If I run emt and THHN or BX, how do I clamp the wire in the box? "Dumb" question I can't find an answer to: Can I put a rigid pull on the nipple and then emt or BX on the other side? I can't find anything on going from rigid to emt. Or do I need to use a handy box as a pull? Or is there an all altogether different and smarter way to do this?
I've read that accessibility to the pull is an issue. I don't think there is any kind of a 90 or junction I can put on the nipple that doesn't have a cover that will require access. I suppose I could build a cubby with a door. It's the garage so not a huge deal and it would be just below the top plates.
I've about decided the easiest way to do this is to put an insulating bushing on the end of the nipple, run two NM into the box and use the hot in the second NM back to the spots. Staple off both in the stud bay and be done with it.
But . . . now I'm wondering if I'm putting too many connectors in the box . . . 4"X 1-1/2" round with 12 guage and lets see if I'm doing this right??
1. Hot to sensor = 2
2. Neutral to sensor and two lights. = 4
3. Sensor to runner = 2
4. 2nd hot to two lights = 3
Arggg 11 total. Looks like I need a 4" X 1-1/2" square.
Did I get the count correct?
Again, thanks for sharing your time and skills.