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!
Master Electrician. I would highly recommend you either hire or find someone with experience to physically come out and help you. You know enough to be dangerous and far too often I find people giving very dangerous advice. Lutron Cassetta family of smart switches are my go to for any smart lighting. You can find solutions slightly less expensive, but the flexibility and reliable quality I have with Lutron.