I understand that the V2L (Vehicle to Load) feature in most new Electric Vehicles in Australia is treated as a 'protected supply' by inverters e.g. the Victron MultiPlus, which can interfere with an inverter's household safety circuit (RCD).
For the uninitiated, the V2L functionality is a great asset for off-grid solar enthusiasts because it provides an easy way to use some of the EV’s big battery (I have 60kWh battery in my EV) to boost the house’s smaller battery (I have a 22kWh house battery) when a run of bad weather prevents good solar gain. Some have apparently successfully plugged the V2L cable from the car battery directly into the generator socket of the inverter and charged the house battery while providing limited AC load to home appliances.
When I do that, my V2L circuit trips out. Contributors to this forum have said that the MultiPlus has a neutral-earth link, which is the reason that the V2L trips out. A solution could be simply to untick the Ground Relay box in VEconfigure.
Is this a safe way to handle the V2L protected supply?
My solar/battery installer agrees that this could solve the problem but he is reluctant to make the change on my system (untick the Ground Relay box in VEconfigure.) until he understands more about potential consequences.
Does anyone have any helpful suggestions?