This is a very interesting thread. Lots of thoughts and feedback all across the board.
I just got done installing a HPWC outside my house on a 60a breaker by myself along with a NEMA 14-50 on a 50a breaker inside my garage as a backup / alternative. I also at the same time installed a generator transfer panel with an outdoor inlet plug along with a "sense" energy monitor.
I am a pretty technically adept homeowner, but I still had to think through a lot of things in detail to get all the right conduit parts for the runs (I ran it in EMT piping that I bent myself - learned by watching YouTube videos). It rains a LOT here in Oregon and so making sure my installation was raintight was very important.
I did get it inspected (Washington County Oregon) for several reasons:
- I wanted someone else to look over my work - even though I am very fastidious, this is not my profession
- If there was ever an issue, I don't want my insurance company to ever have an "out" to blame me for not having it inspected
- When selling a house in Oregon I believe you are required to disclose any un-permitted work. Not worth my hassle or liability.
Permit fee was $141.12. Not too bad really spread out across the four projects.
I was kind of annoyed though at how fast the inspector wanted to bail once he got to my house. He took one look at my EMT bending skills and was ready to sign it off. I peppered him with questions which made him stay a bit longer. Had I not, I suspect he would have been out of there in seconds. I wanted him to at least look at the work I did in the panel but he declined. Since he gave me no notice before showing up at my door on the day of the scheduled inspection I did not have any covers off for him to look at things and even though I offered he did not have me open anything up.
So I could have used the wrong gauge wire, hooked things to the wrong places, not tightened down wires, etc... and it still would have gotten signed off. Let's just say it did not inspire confidence in the inspection system.
But hey, it was $141.12 to cover my ass. <shrug>