I have a new house and have a problem with a certain group of circuits going out. It includes my screened in porch and exterior outlets (landscape lights). Occasionally, the circuit trips (the ground fault outlet in my laundry room has to be reset). I'm worried because I have refrigerators plugged in on my porch and it it trips and I don't notice... could loose refrigerated items. Should I increase the breaker in the fuse box from 20 to 30 amp? Help please...