Just to finish off this particular subject I received this from Sunsynk to a question I raised about protecting the grid when running the house from an EV during a grid outage “You would need to set up an Earth Neutral Bond and set the inverter to work in island mode” I was under the impression Island mode worked automatically but apparently not.
see my reply to Oscarmax 🙂
I’ll check the specs of the Sunsynk because I’m sure it can be set up as automatic but could be wrong.