Delixi 250A leakage protector

Generally speaking, the tripping problem should not be solved by adjusting the leakage current, but the aging leakage or insulation reduction part of the line should be detected to eliminate the fault, so as to give full play to the role of leakage protector. As you said, if it always jumps when it rains on cloudy days, the fault should be in the building structure where the ceiling and outdoor walls are prone to rain. In rainy days, you can open the chicken claw line in the junction box and send electricity in sections. When you find that you can't send it, it's basically a line failure.