In the Victron Schematic AT-1 split phase 240V to 120V-240V with Quattro 240V, How is the neutral of the autotransformer grounded when the Quattro has accepted the shore power or generator AC input, closed its input relays, and opened the grounding relay in the autotransformer via the GND relay control wiring?
It seems to me that it should be grounded or the fault current caused by a short circuit from one of the 120VAC lines to ground would not have a path to neutral to trip a circuit breaker.