Thank you. I have seen this video and it is a different use case. He appears to have his inverters output set for split phase to a 240VAC double pole breaker. The hot of one inverter is one hot leg and the hot of the other.
I am installing just one inverter to start so it will be be just single-phase to the load panel and 30A breaker. I don't plan on ever moving any of my 240VAC circuits to the off-grid load panel. When I am ready to add more 120VAC circuits, I will need to add 2 more inverters.
I suspect that I will need to add 2 more 30A breakers into the load panel with one breaker per inverter.
My other question was about utility power. I plan to implement in several phases for cost since I have to save money for each stage.
Stage 1: A single inverter with 1 x 48v 100ah battery to act as a battery backup for my freezers. No real savings here.
Stage 2: Add solar panels and reconfigure the inverter to make solar input primary power, battery as second, and utility as third.
Stage 3: Add 2 x 48v 100ah batteries in parallel so I can increase no solar capacity for overnight and move the rest of my garage 110VAC circuits over to the off-grid load panel. Total draw should still be within the 30amps.
Stage 4: Add 2 inverters so I can increase the load panel capacity to 90amps.
Stage 5: Move additional 60amps worth of 110VAC circuits from the house to the off-grid panel. Start adding more solar and batteries as needed.
SO .. according to the diagram, it seems AC INPUT to each inverters requires a dedicated 30A breaker from the utility panel and AC OUTPUT from each inverter has to go to a dedicated 30A breaker in the load panel.
I am just going to pre-run the 10AWG wiring for the future inverters in the conduit just in case. It just sucks to run too small a conduit and realize you need to more wires so you end up running more conduit.
