照明灯具在安装接线时,要求相线(亦称火线)和零线(亦称地线)严格区分。应当将零线直接接到灯座上,相线须经过开关再接至灯座上。尤其是螺口灯座,相线必须接至螺口灯座中心的弹片上,而零线接在螺口上。采用螺口吊灯时,应在吊线盒和灯座上 When lighting fixtures are installed, it is required that the phase line (also called the fire line) and the neutral line (also called the ground line) should be strictly distinguished. The neutral wire should be directly connected to the lamp holder. The phase wire must be connected to the lamp holder via the switch. Especially screw base, the phase line must be connected to the shrapnel in the center of the screw base, and the zero line is connected to the screw. When screw chandelier is used, it should be on hanging box and lamp holder