I have a Coleman Mach 3+ non ducted AC. Recently it started having an amperage spike after about an hour and trips a 20amp breaker on the house (I know I need a 30a) or it faults my generator which is a new Champion 3500w generator. It does not trip any breakers in the camper. It also never trips a breaker or faults the generator at start up. Just after an hour or slightly under is when the issue happens/
