Downstairs Main Switch
Main Switch Downstairs:
White Line: Always hot (this was connected to black line screw of old standard switch)
Black Load: Hot when on
Red Traveler: always hot when plugged into switch, 13v when unplugged from main switch and switch is off (even if unplugged from both), and 27v when switch is on and wire is unplugged from main or both
White Neutral: always cold
I’m able to control light from this switch even without red traveler wire plugged in.
Upstairs Add On Switch:
Add on switch upstairs:
White neutral bundle - always hot
Red Traveler - always hot when plugged into main switch, 13v when not plugged into main switch
Black bundle - hot when on
Black Traveler (part of black bundle)- always hot when plugged into main switch, 13v when not plugged into main switch
Black load (black wire with tape on it part of black bundle)- always cold, always grounded
Switching the traveler to the black traveler wire on both units acts same as when the red traveler wire is connected to both units. Swapping traveler wire on one unit makes the light not work.
Swapping from a dimmer to an on/off switch makes no difference. Swapping out add on switch with new add on switch makes no difference.
Flipping add on switch momentarily changes red Traveler voltage when wire is not plugged into main switch. However when traveler is plugged into main switch it doesn’t read a change, just steady at 120v.
If the Black Load wire in the upstairs box is not connected to the Traveler wire that is plugged into the Load of the Main Switch downstairs, the light will not go on.
Is it normal for there to be some voltage on the traveler wires when they are not connected to either switch? And for the voltage to change from 13v when switch is off to 27v when switch is on, even if traveler wire is unplugged from both switches?
Also seems weird that the white neutral bundle of the main switch is always cold. Yet the switch still works both manually and via Z-Wave that way. I would have thought that if the neutral wasn’t right the Z-Wave wouldn’t work or something. Also the other 2 switches in that gang box downstairs share the white bundle still work. Note, there are 2 different circuit breaker switches for this 3 gang box. 1 Breaker controls the light upstairs that I am trying to get working. The other breaker controls the 2 lights downstairs.