I have installed this in a travel trailer. It seams to work good inside the trailer. when I check at the inverter I find there is no ground. I have the ground stud grounded to the frame of the trailer. When I plug in the shore power plug to the inverter all of the trailer 110 sockets say they are grounded. The microwave is also working good.I have it connected to three 114ah batteries and 400 watts of solar. Hopefully it will work for a long time. I used 1/0 welding wire 5ft long to the batteries with a 200amp fuse. There are no instructions that came with it.
High quality and arrived very fast.