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插座上的保险丝安装保险丝的目的是当电路中的电流过大时,保险丝熔断,自动切断电路,以保护电路和用电器的安全;并且当保险丝熔断后电器就不带电,这样就便于检查出现电流过大的问题。如果火线和零线上都装了保险丝,那么,当用电器功率过大时,使零线上的保险丝首先熔断,而火线上的保险丝完好无损,此时用电器电路虽然切断,但因插座仍与火线相通,整个电路包括用电器仍然带电,如果检修时接触它,就会发生触电事故。所以只能在火线上接保险丝,一旦电路过载,确保熔断的是火线上保险丝,这样插座与火线就断开了,就不会产生触电危险了。
The purpose of the fuse on the socket is to install a fuse. When the current in the circuit is too large, the fuse blows, the circuit is automatically cut off to protect the safety of the circuit and the electrical appliance; and when the fuse is blown, the appliance is not charged, which facilitates checking the current Excessive problems. If fuses are installed on the line of fire and the neutral line, then when the power of the appliance is too large, the fuse on the zero line is first blown and the fuse on the line of fire is intact. At this time, although the electrical circuit is cut off, the socket is still in use. Connected with the FireWire, the entire circuit including the use of electrical appliances is still charged, if contact with it during maintenance, there will be electric shock accidents. Therefore, the fuse can only be connected to the fire line. Once the circuit is overloaded, the fuse on the live line is ensured to be blown. In this way, the socket and the fire line are disconnected, and no danger of electric shock will occur.