In my daughters remodel job on her home in Colorado I put all new Square D panels with Arc-fault/GFIC breakers, now she is having issues with them tripping. I don't know if they are over sensitive or something is wrong in the wiring. In her utility room where the panel is located there is the washer and dryer. She did about 3 or 4 loads of wash and then the breaker tripped. Now on the other side of the wall that washer is located are plumbing for the shower in another room. Do you think since the wiring and receptacle for washer is located in the same cavity as the plumbing that this could be causing the tripping?