Smart switch sockets are the most common electrical appliances in daily life. After a long period of use, failures such as dead switch sockets and poor contact with switch sockets may occur. Generally speaking, similar small problems can be investigated on their own. What should I do if the socket at home suddenly breaks down and no power is supplied? Assuming that other sockets and lamps are normal, eliminating the possibility of a power outage in the community, then it clarifies that a certain node of the socket circuit has a problem. This requires us to investigate one by one.
First show the following tools: ① test meter, ② multimeter, check circuit problems, test pens and multimeters are naturally indispensable, even if you are not professionally engaged in electrician work, it is recommended to keep a set at home to deal with some simple circuit problems. Handy. The tools are in place, and the preliminary investigation starts from the distribution box. The first possibility is that the main switch of the distribution box is normal and the socket address loop has tripped. Clarify that the socket circuit is overloaded and short-circuited. Assuming that the socket circuit is a circuit breaker with a leakage maintenance switch, there may also be leakage in the circuit. The electrician will use a professional multimeter and an insulating shaker to investigate the above problems, find the problem, and after the problem is solved, turn on and power off, and the socket can be used for rehabilitation.
The second possibility is that the main switch of the distribution box has tripped and the socket address circuit is cut off. Clarified that the setting of the circuit breaker switch maintenance setting is improper, especially the upper and lower maintenance setting is not properly coordinated. When the lower level fails, the maintenance at the same level does not operate or the upper and lower maintenance operates at the same time, and there is a skip-level trip, troubleshoot the fault, and optimize the circuit breaker Switch setting value processing. The third possibility is that the main switch of the distribution box is normal, and the socket address circuit breaker has not tripped, but the socket is out of power. Use a multimeter to measure the incoming and outgoing wires of the circuit breaker switch corresponding to the socket circuit. The socket circuit breaker switch has electricity in the incoming line and no electricity in the outgoing line. If the voltage is 0, it is determined that the circuit breaker is faulty and needs to be replaced. Assuming that the incoming line of the socket circuit breaker switch is out of power and the voltage is 0, it is determined that the incoming line is faulty, and further investigation is required.
Check the socket itself, assuming that it is admitted that the main switch and loop switch in the distribution box do not have faults and leakage tripping problems, then the socket itself and the circuit need to be checked. Regular socket wiring rules, red, the terminal symbol is marked as "L", representing the front; blue, the terminal symbol is marked as "N", representing the zero line; yellow and green are mixed, and the terminal symbol is marked as "〨", representing Ground wire. Connect to the previous link, and measure whether the voltage of the circuit breaker switch circuit of the socket address is normal. If it is normal, proceed to the next step. Use a multimeter and a tester to measure the socket circuit. Case 1: Assuming that the total household voltage is normal, the circuit breaker voltage is normal, and the socket has no voltage, it may be that the front of the socket or the neutral line is disconnected. The above situation is diagnosed as a line problem and the line needs to be replaced. Case 2: The voltage between the neutral wire and the ground wire in front of the socket is normal, but the socket does not supply power. It is determined that the socket itself is physically damaged. After the socket is replaced, the fault can be dealt with.
