Hi - I’m doing some rewiring and got to thinking about this. Latest NEC code requires all junction boxes (JBs) to have a neutral in them, but does not require a live. In the case of a two way switch you’ll have both neutral and live in your JB by default. But for a 3 way switch you’re likely to end up without live in one of the JBs. Can smart switches deal with this? To be clear - one of the travelers for the 3 way/4 way would always be hot - but it would toggle between when is hot and which isn’t as the switch gets toggled.
Thank you!
Leviton now only has a real switch at the connection to the device, everything else is a remote. This allows changing all the travelers into hot and neutral, and ideally a ground. Their previous generation Z-wave didn’t do this, and the box controlling the switch was left without a neutral. The electricians stole the neutral from another switch on a different circuit in the same box. I ended up crawling through the attic to connect a neutral from the same circuit at a ceiling light box on a single switch. What a pain. Even worse, there were two different 120V in the same box without tying the breakers together.