Victron phoenix 12/800 inverter installed on a steel Hull boat
When I test across live and negative I get 220v. When I test live to earth I'm getting 140v and when a load is applied I'm getting 80v.
I have replace the inverter and get the same issue. I have run a negative cable to the Hull and the problem persists. The appliance I want to run requires a good earth to run properly.
Any ideas. Help much appreciated.