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 safely...
I opened up what I think is the "main" ceiling junction box and found four armored cables junctioned here. Okay, I think I guessed right. Three of the cables have just a white wire and a black wire, and one of the cables has a white, a black, and a red traveler.
I separated the four ganged black wires and figured out which is the "power in" with a non-contact voltage tester. We'll call this Hot #1.
I connect each of the other Hots, in turn, to Hot #1 and got these results:
- Hot #1 to Hot #2 powers the other ceiling light fixture. Btw, this Cable #2 is the one with the red traveler.
- Hot #1 to Hot #3 powers Outlet A and Outlet B.
- Hot #1 to Hot #4 powers Outlet C, and surprisingly, also Outlet A.
Huh?! That last one doesn't make sense to me. Can anyone clue me in to what's going on?