工厂中一般电气设备如电动机等都接有地线。其实电气工具如电钻、电焊机等也应接有良好的地线。 因为这些电气工具和电气设备一样,在正常情况下,它的外壳没有电,可是当它内部的线圈由于年久失修或者腐蚀和机械性损伤等原因,其绝缘一旦遭到破坏时,它的金属外壳就会带电,如果人站 General electrical equipment factory, such as motors are connected to the ground. In fact, electrical tools such as drills, welding machines, etc. should also be connected with a good ground. Because these electrical tools and electrical equipment, under normal circumstances, its shell does not have electricity, but when its internal coil due to disrepair or corrosion and mechanical damage and other reasons, once its insulation is destroyed, its metal The shell will be charged if the person stands