So it would make more financial sense to purchase a transfer switch like BartHenry shared? If the inverter still draws 100w at pass through state any time my PV system and batteries are ineffective I would be paying to run the inverter. I'm thinking when there is a few days of rain in the winter or something of the sort I would see a significant change in my power bill.
If I go ahead and buy another 48v 100ah battery what can I practically get from that? My house consumes roughly 1100kWh per month. I am not trying to offset all of that but like stated before separate out a few small loaded circuits refrigerator, light circuits, etc. What is a reasonable expectation for this system?
Thanks