建筑工地用电均属于临时用电,要求做到三级配电、两级保护,即总配电箱、分配电箱和开关箱三级配电,总保护和末级保护两级保护。由于漏电保护器或漏电开关的使用,隔离开关的选型显得尤为重要,下面简单介绍隔离开关类型的选用。隔离开关在电路中的主要作用是 Construction site electricity are temporary electricity, requiring three levels of distribution, two levels of protection, that is, the total distribution box, distribution box and switch box three distribution, total protection and the last level of protection two levels of protection. Due to the use of earth leakage protection or leakage switch, the selection of isolation switch is particularly important, the following brief introduction of isolation switch type selection. Isolation switch in the circuit’s main role is