電線導(dao)管：電線電纜(lan)的保護管。

電線穿管：在(zai)施(shi)工過程中(zhong),先按圖(tu)把(ba)保(bao)護管敷設好,然(ran)后,把(ba)電線電纜穿進(jin)管子到達用電器。

電(dian)(dian)(dian)線一般用于承載電(dian)(dian)(dian)流的導電(dian)(dian)(dian)金屬線材。電(dian)(dian)(dian)線穿管有(you)以(yi)下好處。

1、穿布(bu)管的布(bu)線基礎

穿管布(bu)線(xian)是布(bu)“活線(xian)”的基礎(chu)，為(wei)了以后(hou)線(xian)路(lu)維護、更換(huan)和家(jia)庭智能化打下(xia)基礎(chu)。

2、保護絕緣層

防止電(dian)(dian)線(xian)的絕緣層(ceng)(ceng)受損。如果直接埋進(jin)水泥砂漿中，硅(gui)酸鹽(yan)可能會腐蝕電(dian)(dian)線(xian)的絕緣層(ceng)(ceng)，導(dao)致電(dian)(dian)線(xian)絕緣下(xia)降而造成短路(lu)；