I have a stand alone solar setup 400 watt panels , victron 100/30 mppt charge controller , 2 100 amp lithium batteries ,and a 2000 /4000 watt aims inverter . I want to run this thru my shore power cord to charge my system and run some of the RV electric . When I connect it I just get flashing light on my surge guard ....I am assuming it sees it as an open ground ! Can I put a bonding plug on the inverter or will this cause any unsafe issues....inverter is grounded to the frame .