正在加载视频...

视频加载失败

There is no single value for every installation. A common target is ≤5Ω, while sensitive systems may require ≤1Ω. The correct value depends on the earthing system, fault protection, soil, and applicable electrical standards. Lower resistance = better fault-current path.

19,359 次观看 • 7 天前 •via X (Twitter)

0 条评论

暂无评论

原始帖子的评论将显示在这里

相关视频