Travel when the weather is wet.

This kind of fault is generally caused by poor insulation of wire joints on lighting lines, because the joints of live wire and zero wire are too close together and the insulation is not done well. In case of wet weather or water leakage, water seeps into the joint, resulting in leakage between the live wire and the neutral wire or direct short circuit between the live wire and the ground, and the joint heats up, which eventually leads to the air switch tripping. The air switch you use is a famous brand, so there should be no problem in general. Tripping is what it should do, which shows that it has done its duty. It used to be 16A. If I have a fever, it's my fault. If there is no fever, there will be fire in the tripping time and space, which is where the soft short circuit of the line occurs, and it will be short-circuited from time to time. This fault point is difficult to find. Inspection method: turn off the air switch, turn off all the lights, and check whether the resistance of the lighting circuit is infinite with a multimeter resistance file. If the resistance is small, there is a short circuit point! You'd better ask the electrician who helped you decorate your home. Where is the joint? Excuse me, when your home was renovated, did the wires pass through the pipes? Is it a metal pipe or a PVC pipe? Metal tubes are more likely to cause failures. Failure without pipeline penetration is more likely! I hope I can help you!