I’d like to start by saying I have a pretty good grasp of how 3-way (and 4-way) light switches are wired. My issue is not understanding it, but trying to think of a way to compensate for a poor choice made by an electrician 25 years ago.
Here we go.
I have a circuit where power comes from the panel to a 3-way. The white wire was capped off and the black went to the common wire.
Then there was 14/2 wired to the traveller terminals (black and white). That wire goes to a 4-way switch where another 14/2 is attached. Black wires attached to one side, white to the other.
Then, that 14/2 wire goes to another 3-way. The box with that last 3-way has 2 other 14/2 coming into it. One goes to the light, the other one is always hot. BUT THE ELECTRICIAN CUT THE BLACK WIRE ALL THE WAY BACK IN THE BACK OF THE BOX!!!
So, in that box, I really only have an always on white wire.
Now, I want to use an Aeotec Micro Smart Switch. The instructions for that switch show a diagram for use with a 3-way, but I really just don’t understand it. And I’m not sure if I can use it or not.
I THINK it wants me to put the switch in the last box and run the wire out of the common side of the last switch to the switch input side of that micro switch. (That terminal is too small to take a 14-guage wire, so you cannot run anything with current on it, so it would just be used to signal the switch that the state of the other switches have changed.)
But I cannot think of a way to wire this without that black wire that the electrician so thoughtfully chopped off.
I don’t think I can even put the switch up in the light fixture, because I would assume that only the one 14/2 would be going up there (white would be active all the time, but black would only be hot if the light was supposed to be on, so I cannot wire it there.)
I think I’m pretty much out of luck, but I thought I’d check with the brain trust here. Does anyone have any ideas?