I am planning the conversion of a “3-way switch loop” to a configuration with smart switch(es). I’m also documenting the existing configuration so that I (or my successor) can restore it.
Are the wire color assignments in Figure 1 (before) appropriate?
Are the wire color assignments in Figures 2 and 3 appropriate? Would you find swapping red and black less confusing? My goal is to give flexibility between Figures 2 and 3 without changing the ceiling fixture.
Changing from Figure 2/3 back to Figure 1 involves removing neutral from a switch location. Is this technically a code violation? Or will it be clear that the work is restoring the original configuration? I suppose this question would only come up if I am not around to do the work.
Figure 1 - Current Configuration
Figure 2 - Smart Switch
Figure 3 - Twice as Smart
Figure 3 has the disadvantage relative to Figure 2 that a hub is required for the garage switch to operate the light. I accept that there are enough other lights in the area to cover an emergency situation when the hub is down.
I am using a Zooz ZEN32 switch. It will toggle the load when the traveler changes between open and your choice of neutral or hot.
The location is Virginia.