No. If the rig is plugged in the battery cables will be powered by the converter. A possible backfeed could occur depending upon what the battery shut off really shuts off. Pull both battery cables off carefully with the rig plugged in and the shut off turned to the off position. Then measure for voltage at the cables. If the voltage reads 0 then you are good to go. If not, then you can still cause a short if the positive side touches anything metal that is part of the camper. Jay
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