In home life, electric utility socket is just a common thing, saving resources and very convenient, but this lifestyle is very dangerous. Industrial plug is suitable for industry, generally divided into 3 core, 4 core, 5 core, etc., current is generally divided into 16A, 32A, 63A, 125A, 250A, 420A, etc., protection grade can be divided into IP44, IP67 these two, for these are more conventional. In general, it is used with industrial sockets and industrial connectors. IP54 is dustproof level 5: can not completely prevent dust invasion, but the amount of dust invasion will not affect the normal operation of the product; Waterproof grade is 4: prevent splashing water intrusion prevent splashing water intrusion in all directions. Power socket has one or more circuit wiring can be inserted into the seat, through it can be inserted into a variety of wiring, easy to connect with other circuits. As a matter of fact, refrigerators and color TVS in household appliances cannot share sockets, because the starting current of refrigerators and color TVS is very high. The starting current of refrigerators is 5 times the rated current, and the starting current of color TVS is 7 to 10 times the rated current. If refrigerator, color TV starts at the same time, socket contact and lead bear hard, can affect each other, cause harm.
Additional, refrigerator undertakes power supply plug must not appear unplug at will, when the temperature influence inside refrigerator falls to have certain value, thermostat can control automatically to cut off working power supply. At this time, the refrigerant pressure is very small, relative to the load compressor to improve the motor, the motor is easier to lead to the normal development of the start. If there is no forced measures to cut off the power supply, in the case of the refrigerant pressure is quite high and immediately connected to the power supply, high pressure changes cause the motor as a load pressure is too large, the start fault current is large, about 20-30 times the normal value, it is easy to burn the motor. Therefore, it is inevitable to unplug the refrigerator power plug at will. When it is necessary to cut off the power supply in time, it should be re-connected to the power supply 3 minutes after the power failure, and not because of the power failure and immediately energized.