小蜗牛_Abe5E 发表于 2024-1-11 18:03:09

关于室外预埋电气管材的讨论

建筑电气与智能化通用规范7.2.8条要求埋在土壤里的接地导体应采用铜质材料或不锈钢材料,不应采用热浸锌钢材,是否因为热热浸锌容易腐蚀;而民标8.3.8条要求绝缘电线穿金属导管在室外埋地敷设时,应采用壁厚不小于2.0mm的热镀锌钢导管,并采取防水、防腐蚀措施。既然要防腐蚀,为什么还要采用热镀锌?欢迎讨论。data:image/png;base64,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990571262 发表于 2024-1-12 10:01:31

7.2.8主要考虑的是电化学腐蚀,8.3.8是正常环境腐蚀

jacker1201 发表于 2024-1-12 10:09:06

7.2.8讲的是当利用建筑物基础作为接地装置时,埋在土壤内的外接导体不能采用热浸锌钢材。是有前置条件的,不能就认为热浸锌刚才不能用。
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