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室外电缆穿线管敷设要注意什么问题？

室外电缆穿线管敷设要注意什么问题？

浏览：81次 | 提问时间： 06-22 08:10

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4个答案

绘几行路人 06-22 08:11

你好，希望帮到你1、室外电缆敷设用穿+C-PV线管。2、电缆直接埋地敷设,从室外配电室到室内的配电箱全长都用穿保护管，直埋电缆,即直接埋在土壤中，电缆的铠装金属层,本身可以保护电缆具有防老鼠咬以及一定的抗机械力作用。3、穿过马路的电缆都是使用6寸PVC管穿的，埋在水泥路面以下1.2~1.5米深度。

沿途风景你是旧梦 06-22 08:20

首先，选用电缆穿线管的直径应满足电力电缆规程的要求，一般为电缆外径的1.3―1.6倍。然后，应对每根电线穿线管管进行检查。对有裂纹等缺陷不符合规格的均不许使用。同时，铺设电缆穿线管时，勿使管子悬空，为此应在每根管接口处留工作小坑。最后，在安装电缆保护套管接头时，要在管箍内涂上肥皂水再往里穿，至使两根管口的距离达到10一15mm为准。

心里鬼 06-22 08:28

钢管的弯曲率半径要根据各种电缆能承受的弯曲率半径计算，有数据表可查，另外还得考虑与水管道的平行距离，于热水管平行或交叉得做隔热防护，注意穿墙要有隔离套，不要与易爆易燃气体间距太近。需做好防小动物咬坏的设施。

涼城薄愛 06-22 08:36

室外电缆穿线管敷设注意问题(1)采用多项供电时，同一建筑物、构筑物的电线绝缘层颜色选择一致，及保护接地(PE)应是黄绿相间色，零线浅蓝-淡蓝色L1(A)黄色了L2(B)绿色L3(C)红色。(2)疏散照明线路采用额定电压等级不低于750V的耐火电线或电缆；(3)一条线路接多个插座时，插座干线(应是单芯铜线)尽量不要断开连接，中间拨皮分支的接法；(4)吊顶内导线必须穿管保护，导线不能裸露在外；(5)接地(PE)或接零及其他焊接完成经检擦确认后，才能穿电线或电缆；电线电缆穿入导管前绝缘测试必须合格。

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