Having a issue with the GFCI tripping while RV is in for service inside the building. We are using 2 quattro 12v/5000 inverters in a split phase configuration with l2 returning to original. We do not have room to add a isolation transformer to the the system. I did see a product called B-stop that could be used but it shows its operating frequency is 50hz, we need something in the 60hz. Is there any way to program the inverters to limit the leakage to under 5mA?