If the household leakage switch (the leakage protector is assembled with the low-voltage circuit breaker and has the function of overload and short-circuit protection), the power supply should not be closed after the jump, and the inlet and outlet pile heads and the incoming line voltage of the protector should be checked. If there is no problem, then disconnect each group to check whether there is an internal line fault. If there is no question in each group's outlet, or if it still cannot be powered on, it is necessary to change a new leakage switch.
Why does the leakage switch trip frequently? There are several reasons:
(1) Poor installation. The lead wires of each pile head are not firmly connected, and the looseness of the pile head will cause heat and oxidation of the pile hair, burn out the outer insulation of the wire, and emit spark and burnt smell, causing the line to be under pressure and the air switch to operate.
(2) There is a problem with the quality of the leakage switch itself.
Does not match the load. The actual electrical load of the home is greater than the rated current of the low voltage circuit breaker on the line. It usually occurs after new installation or new use of high-power household appliances such as air conditioners and electric water heaters. The matching air switch must be replaced.
(3) Electrical or line leakage or short circuit. When it is found that the electrical appliance used is leaking, just unplug the electrical faulty electrical appliance and reconnect the low voltage circuit breaker to send power. If you find that the line is leaking or short-circuiting, you must ask an electrician to solve the problem. After the low-voltage circuit breaker trips, first disconnect all the shunts, and then turn them on one by one. When a certain road is closed, the low-voltage circuit breaker can not be powered on, that is, the branch is faulty. The road should be disconnected and the other branches should be connected to transmit power. After detecting the problem of the fault shunt, it is repaired and then sent.
(4) The power supply line voltage is too high. This is very dangerous. It usually occurs in the “three-phase four-wire power supply house. At this time, it is necessary to see if the two lines are energized at the first line; secondly, whether the neighbors are also tripping; three measures the incoming line voltage with a multimeter. Never put a low-voltage circuit breaker on hold, otherwise it will burn the appliance and cause a fire.
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