1. When air conditioners are used in users' homes, they are basically equipped with leakage protectors. The leakage current of the leakage protectors is 30 mA, and when leakage occurs, they basically trip first.

2, in the power supply environment without leakage protection, if the leakage is relatively small, it is estimated that it is also difficult to measure. The measuring accuracy of clamp ammeter is between 1-2%. Taking the running current of 10 A as an example, the error is 200 mA.