I wouldn’t dare attempt to run an inverter in parallel with the grid. It would be for power outages scenarios similar to what happened to Damien. Completely disconnect from the grid with a breaker and lock out switch, then use an EV as a back-up generator.

Can a Gen 2 or Gen 3 board be used for charging across MG1 and used as a mains inverter, 120VAC in the US or 240VAC everywhere, across MG2?
I ask because an EV with two inverters, one to run the car and the other to charge the car and use the HV battery as a back up generator, sounds like a really ...