I'm considering my future charging setup...Have read few threads and saw few people mentioned their HPWC or UMC units broke and stopped working, so they are not totally dependable. Wondering if I can plug in HPWC into NEMA 14-50 outlet as a form of backup (if HPWC breaks, I can still use UMC with 14-50), also 14-50 will likely be more compatible with things non-Tesla. This also gives me the flexibility to have electrician install 14-50 and buy/self-install HPWC later. I've read that HPWC is supposed to be hardwired. However, my sauna heater said the same. I really didn't want to do this, b/c that would remove my flexibility to easily unplug/move sauna unit when needed. When I discussed this with my electrician (HVAC guy, actually) he said this doesn't make much difference, but gives manufacturer some leverage if, say, unit breaks and is on warranty and you want them to fix it, but they can say it was not wired up to spec, so it's your fault and we won't fix. Since my warranty on heater was only 1 year, I figured chances are pretty small I will need the warranty, so he added 14-50 outlet and the heater works fine since. Is it the same kind of deal for HPWC? Are there electricians here to clarify dangers of such setup, like: fires are more likely to happen; If someone(?) sees this setup, they will void house insurance, charge penalties for non-compliance, etc. ?