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目前大多數(shù)工程中,開(kāi)關(guān)線和插座線采用單股導(dǎo)線,施工人員也喜歡用單股導(dǎo)線,因?yàn)榇┚€和接線方便。若采用多股線,穿線沒(méi)有單股線方便,更為麻煩的是接線,因?yàn)橐?guī)程規(guī)定多股線必須搪錫或壓接后方能和開(kāi)關(guān)或插座相連接。上海波特曼大酒店等涉外工程的開(kāi)關(guān)線和插座線采用2.5mm2的多股導(dǎo)線,因?yàn)槎喙删€是軟線,在開(kāi)關(guān)和插座裝拆時(shí),接線不會(huì)發(fā)生松動(dòng),而單股線是硬線,開(kāi)關(guān)和插座裝拆時(shí),會(huì)引起接線的松動(dòng)。
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