电器线路防火小常识１．预防电路超负荷的方法有：（１）根据用电情况选择合适的电线，一定材质、粗细的电线能通过的最大电流叫安全载流量。如某个家庭使用电器的总功率为４０００瓦，那么电流就是约（４０００５２２０）１８．１８安。如果选用橡用钢芯线，应选标称截面... Electrical wiring fire common sense 1. Prevention circuit overload methods are: (1) According to the electricity situation to choose the right wire, certain material, the thickness of the maximum current through the wire called the safe carrying capacity. If a household using appliances total power of 4000 watts, then the current is about (40005220) 18.18 amps. If you use rubber steel core wire, nominal cross section should be selected ...