Leakage protector is a protective element when electrical appliances and lines have leakage faults. Its working principle is to disconnect the circuit when the residual current of the neutral line or the grounding current is greater than a certain value (for example, 30ma), so as to avoid electric shock accidents. The so-called abnormality is actually that it is protecting your life normally. Therefore, I suggest that you carefully check the electrical appliances at home, especially the rice cooker, and check whether there is any leakage in the electrical circuit. The inspection method is to use all kinds of electrical appliances one by one, test which electrical appliance works when the protector works, and check the circuit of the protector when the electrical appliance works to check whether the electrical appliance is aging or leaking. You can ask an electrician to check the insulation of electrical appliances and lines and find out the cause of leakage.
The maximum current of several leakage protectors provided by the landlord exceeds 20A, and they can be used as long as the single power does not exceed 4400W W W. The working principle and structure of leakage protectors are very simple and the technology is very mature. As long as the regular manufacturers meet the relevant national standards and obtain industry certification, they can use it with confidence, and there is no problem of high or low safety factor. The working current of household leakage protector should not be greater than 30ma, and the working time should not be greater than 0? 1 sec.
According to the supplementary information provided by the question, it is important to check the electrical circuits used by the rice cooker, including the power cord and plug socket of the rice cooker.