家庭电路的常见故障是短路、断路、过载和接触不良。因此,在排除故障时,应先判定故障的范围,下表所列内容,可供同学们参考。检修电路故障的一般方法如下:先用测电笔检查总开关处,如有电再用校火灯头(一盏好的白炽灯,在灯座上引出两根线就叫校火灯头)并联于闸刀开关下的两接线柱 Common faults in home circuits are short circuit, open circuit, overload, and poor contact. Therefore, in troubleshooting, you should first determine the scope of the fault, the contents of the following table, for students to refer to. The general method of repairing circuit faults is as follows: first use the test pencil to check the main switch, and if there is electricity and then use the fire lamp holder (a good incandescent lamp, two lamps on the lamp holder will be called the school fire lamp) in parallel with the brake Two posts under knife switch