Os, so what I'm asking here is for extreme conditions, where the urban grid is gone, and not expected back for weeks or months. So say the Big One creams LA, and somehow, my overbuilt roof and it's panel array make it through unscathed. I'd much rather be selling back to Edison, then running independent. There are no linemen, no city inspectors, and likely no food or water, but I have sunshine, 4KW of panels, and a GT inverter. Any way, with a beefy 30A 240V CT transformer, and a small pure sine inverter, to fake the GT into operation for sunny hours, or in addition to sensing the voltage/fq, it's measuring the grid impedance and would refuse to switch on?
(even private replies appreciated)