[Piotrsko]

Cant see where they install this stuff in hard to access places. No crawling around under, over or hard to get to. Federal and universal muni Code requires power turn off within 6ft, so it's not a shock hazard. Only major requirements could be some sort of lifting device. Everything else is plug and play with sealed modules because you dont want your service people poking around the innards. Worse case the repair person needs a weeks training doesn't need the 36 weeks electronics course I required for servicing nuke missiles. All the techs I see lately have pictures and instructions they watch on their phone.

So I stand on my original comment regarding service. Ain't rocket science, and I am qualified to determine that.