Thanks! Quickly looking at the rules, it doesn't look to me like the issue is whether you're connected to the grid? If you have high-voltage wiring (50V+) it looks to me like you still need to get that permitted and inspected?
Don’t have HV then, at least as part of the structure. Say, 14.8V DC and a removable 120VAC inverter.
Sure, but you could also run 48V from the main structure, no?