Planning to buy Giandel 3000W inverter which is missing N-E bonding and planning to add automatic transfer switch which would either connect shore or inverted live / neutral wires to main van breaker box. Breaker box has RCD and MCB. Would appreciate if these answers could be answered:
1. Is it necessary to have RCD between Inverter and Automatic Transfer Switch, even if there is one in breaker box after the switch?
2. Can both shore and inverter earths be connected together even if inverter earth is bonded to its neutral? Is shore earth affected by inverter's neutral (as N-E bond is made)?
3. Should shore / inverter AC earth be connected to vehicle chassis / negative 12V DC busbar?
4. Is there any safety risk with inverter still working when switched to shore power? Inverter output wires would still be live even when on shore power.
Thanks for answers

1. Is it necessary to have RCD between Inverter and Automatic Transfer Switch, even if there is one in breaker box after the switch?
2. Can both shore and inverter earths be connected together even if inverter earth is bonded to its neutral? Is shore earth affected by inverter's neutral (as N-E bond is made)?
3. Should shore / inverter AC earth be connected to vehicle chassis / negative 12V DC busbar?
4. Is there any safety risk with inverter still working when switched to shore power? Inverter output wires would still be live even when on shore power.
Thanks for answers
