建筑电气安装工程中,HK型开启式负荷开关,俗称胶木闸刀,由于价格低廉、结构简单而被广泛采用。特别是两极胶木闸刀,在民用电气工程中更是常见。许多电工在这种开关接线时,往往采用一种习惯做法,见图1。这种火线在开关上桩头进出,下桩头做假接头的做法,似与火线进开关的要求不相 In the electrical installation of buildings, HK type open load switches, commonly known as bakelite blades, are widely used because of their low price and simple structure. In particular, bipolar bakelite knives are more common in civil electrical engineering. Many electricians often use a common practice when wiring such switches. See Figure 1. This fire line in the switch on the pile head in and out, the practice of false joints under the pile head, and the fire line into the switch does not seem to meet the requirements