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工程接地型式采用TN-S系统，其专用接地线(即PE线)的截面规定是多少?

2025-04-03 00:20:03

推荐回答（1个）

回答1：

工程接地型式采用TN-S系统，其专用接地线(即PE线)的截面选取：
当相线截面Sl≤16平方，PE线截面应不小于Sl。最小不小于2.5平方。
当相线截面Sl=25平方，PE线截面应不小于16平方。
当相线截面Sl＞25平方，PE线截面应不小于Sl/2平方。

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