I'm trying to upgrade my switches to Enbrighten Smart Dimmers (that require a neutral). I've been successful in one three-way situation, but not in this one.
(I’m going to refer to the three-way switch terminals as A, B and C, where C is the common.)
There’s 14/3 Romex going into box 1 with a three-way switch. White to the common terminal C, black and red to the other two. Near as I can tell, white is hot.
In box 2 there are three red 12 ga wires connected to a three-way switch.
The light fixture has two sets of 3 12 ga red wires. Two pass through into the other, and one from each set connects to the lights.
[![Light fixture sraight on]]
With the wires in box 1 completely disconnected and power turned on, in box 2, the AC voltage detector beeps for the red on A or the red on B, depending on the switch position (if A is connected to C, it doesn't beep; same with B), but never beeps for the common red C.
I can get the smart switch to power on if I connect it in box 1 black-to-neutral, white-to-line (and I set the box 2 switch to position B), but I can't get it to turn on the lights regardless of where I connect the other wire (load or traveler terminal). Maybe tomorrow I'll crawl under the house to try to see where the Romex goes.