well first off i have a confession to make... we joined the dark side that being said, we already have an issue and this is the only forum im sort of established on so I am hoping for some help! When I bought the camper the initial problem was that with any extension cord I was getting about 37V through the frame of the camper. Switching breakers off one at a time would slowly reduce the voltage until all of them were off. When all breakers were off, including the main, I still had about 6V running through the frame. The next day I took two grounds off of the frame, sanded everything to bare metal, put di electric grease then re installed. After doing this, when using a grounded cord I only have 1.5V running through the frame. However, using a cord without a ground (ground broken off) I still have about 6V running through the frame. I know that a ground should always be used etc etc . but there is never a guarantee that the ground will be functioning properly at campgrounds so I would like to get it down to below the 2V that I have heard is considered acceptable per code. Next I pulled out the inverter and cleaned the ground wire there. Afterwards I am at roughly 4V. I get 4V going from the frame to the earth and I can duplicate that EXACT voltage by going from the ground buss bar in the inverter to the neutral buss bar. It seems that somehow 4-6V is being introduced into the neutral circuit. Any ideas? For what it is worth I have a pop up that only has .9V with the same un grounded ext cord, so I know its possible and that something must be wrong with the travel trailer.