With the Inverter powered of, is the Neutral-Earth relay “Open” or “Closed”? The drawing suggests NO…
Reason I ask is I had an Inverter suffer damage due to nearby lightning strike while it was powered off.
Had a thought that if this relay is “Closed” while unit is powered off, “Live” disconnected, “Load” disconnected, a surge via earth into the neutral on the inverter could be responsible for the damage?
Plausible?