接地的

When installation, unlade the join copper bus bar, through the preformed long-square hole, fixing it on the main grounding bus bar.

安装时将互连铜卸下，穿越柜间预留的长方孔，固定在相邻两柜的主接铜。

Grounding and its notices were probed into construction of trolley isolative wire. How to eliminate safe hidden troubles in construction was discussed also.

讨架空绝缘线时的接问题注意事项及如何消除的安全隐患。