1) Was the RCD also the main breaker or is there another main breaker before or after the shore power
switch? Not sure whether these RCD's can function as a mains breaker like the NA GFCI's.
2) Is there a separate RCD from the inverter
circuit to the main panel? I realize that this circuit was existing and you just reused it.
3) Can you provide a simple wiring
schematic including shorepower inlet, power supply to inverter/charger, main AC circuit from inverter
and inverter circuit showing locations of switches, RCD's and main breaker if separate. No need to see anything downstream of the panel.
I installed a MV 4000w Inverter charger
in our boat and had some of the same issues so I am curious to see how yours is configured with the RCD(s).
It seemed to me at the time that a 2nd RCD would be required on the inverter supplied circuit.
Also would your installation
provide residual current
protection for the Inverter/charger itself or do you rely on a dockside device? If so, what about power supplied via the generator