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室内电线穿线管安装需要注意什么事项？

室内电线穿线管安装需要注意什么事项？

浏览：26次 | 提问时间： 08-05 11:34

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稚始稚终 08-05 11:35

1、矿用电缆与热力管道平行安装时应保持2m的距离，交叉时应保持0.5m。2、电缆与其它管道平行或交叉安装时均要保持0.5m的距离。3、电缆直埋安装时，1-35kV电缆直埋深度应不小于0.7m。 4、10kV及以下电缆平行安装时相互净距不小于0.1m，10-35kV不小于0.25m，交叉时距离不小于0.5m。5、电缆的最小弯曲半径,多芯电缆不得低于15D,单芯电缆不得低于20D(D为电缆外径)。6、6kv及以上电缆接头。 A. 安装电缆终端头时，必须剥除半导电屏蔽层，*作时不得损伤绝缘，应避免*痕及凹凸不平的情况，必要时要用砂纸磨平；屏蔽端部应平整，并要把石墨层(碳粒)清除干净。B. 塑料绝缘电缆端头铜屏蔽和钢铠必须良好接地，对短线路也应遵循这项原则，避免三相不平衡运行时钢铠端部产生感应电动势，甚至“打火“及燃烧护套等事故。接地引出线要采用镀锡编织铜线，和电缆铜带连接时应用烙铁锡焊，不宜用喷灯封焊，以免烧损绝缘。C. 三相铜屏蔽应分别与地线相连，注意屏蔽接地线和钢铠接地线应分别引出，相互绝缘，焊接地线的位置应尽量靠下。7、对电缆终头和中间接头的基本要求： a. 导体连接良好； b. 绝缘可靠，推荐采用辐照交联热收缩型硅橡胶绝缘材料； c. 密封良好；d. 足够的机械强度，能适应各种运行条件。8、电缆端头必须防水，以及其它腐蚀性材料的侵蚀，以防因水树引起绝缘层老化而导致击穿。9、电缆的装卸必须使用吊车或叉车，禁止平运、平放，大型电缆安装时须使用放缆车，以免电缆受外力损伤或因人工拖动而擦伤绝缘层。分享来自山东阳谷绿灯行电缆。

ミ汣年不忘 08-05 11:43

1，根据在施工现场开设的沟槽进行布排管,在有水房间进行布排管时电管应布设在墙上、顶上。强弱电线不允许走厨房、卫生间阳台的地面。 2，墙面管道的布置应平顺竖直,尽量不要有弯折的地方。如有弯折,转弯处不应有明显的折痕。强弱电的间距必须大于等于150mm,以防止电缆信号不清晰。煤气管和电管的距离不能小于150mm。 3，成排安装的开关高度应一致,高低差不大于2mm。暗盒之间的间距为10mm,插座离地面的高度一般至少300mm,开关的位置一般离地1300mm。 4，在穿线时,一根电线管内所穿电线的截面积之和必须小于该管道内截面的40% 。一般情况下16mm的电线不宜超过3根,20mm的电线不宜超过4根。 5，强弱电线均应穿管敷设,不同类线不得安装在同一线管内。接线过程中,线管交汇处使用接线盒,接线处采用接线帽。接线时要分色。希望我的回答能帮到您！

SUFFOCATE窒息 08-05 11:52

1、电路改造涉及到空间的*，还要开槽，所以要提前进行。严禁将导线直接埋入抹灰层，导线在线管中严禁有接头，同时对使用的线管（PVC阻燃管）进行严格检查，其管壁表面应光滑，壁厚要求达到手指用劲捏不破的强度，而且应有合格*。也可以用国标的专用镀锌管做穿线管。要符合*标准，标准规定应使用管壁厚度为1.2 mm的电线管，标准要求管中电线的总截面积不能超过塑料管内截面积的40%。对管路铺设遵循“安全、方便、经济、客观”的原则。与此同时，对特殊用电回路，例如：空调、整体浴室、电淋浴器等，建议用户在购买时，先自检是否有保护装置，然后再配置相应的漏电保护开关，以确保用户的财产安全。工程完工后，要进行漏电开关检测，给出完整的电路图，以便日后维修。2、电线的选用　为了防火、维修及安全，最好选用有长城标志的“国标” 塑料或橡胶绝缘保护层的单股铜芯电线，线材槽载面积一般是：照明、插座用线选用2.5平方毫米，空调用线不得小于4平方毫米，接线线选用绿黄双色线，接开关线(火线)用红、白、黑、紫等任一种。但在同一家装工程中用线的颜色用途应一致。

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