I need a hybrid grid-tie/off-grid solar system for backup power because my grid is unreliable. I have 200A service at the main panel and two sub-panels - 125A for the house, 50A for the garage. I could split my 125A house sub-pane into critical and non-critical load panels, and connect the inverter AC output to the critical panel, AC input to the main panel. But I would like to avoid re-wiring my house sub-panel. Is there a way to power the house sub-panel without splitting it into critical and non-critical sub-panels?
From the energy audit spreadsheet, my min continuous inverter size is 2.5KW, min surge inverter size is 7.8KW. Most inverters I see in this size AC output is only 60A, so it can't fill the entire load during normal operation, therefore cannot be the only source of power to the house sub-panel. Is there an inverter that can be connected to the house sub-panel using only AC input, then feed back/sell back/export to the house panel but not the main panel? Would I also need an ATS upstream from the inverter? This thread refers to "Watt Node" but I can't tell which specific product by that company.
I'm in CA and need it to be UL/listed.
Edit: P.S. It would also be nice if there were a single inverter that could output split phase
From the energy audit spreadsheet, my min continuous inverter size is 2.5KW, min surge inverter size is 7.8KW. Most inverters I see in this size AC output is only 60A, so it can't fill the entire load during normal operation, therefore cannot be the only source of power to the house sub-panel. Is there an inverter that can be connected to the house sub-panel using only AC input, then feed back/sell back/export to the house panel but not the main panel? Would I also need an ATS upstream from the inverter? This thread refers to "Watt Node" but I can't tell which specific product by that company.
I'm in CA and need it to be UL/listed.
Edit: P.S. It would also be nice if there were a single inverter that could output split phase