Grounding Metal Walkway

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kenaslan

Senior Member
Location
Billings MT
We have an independent 3rd party inspector. He is requiring that all metal lids and walkways be bonded. Has anyone ever bonded the metal lid for a vault or concrete trench?
 
Are the walkways bolted or welded to building steel? That ought to cover them. If they're free hanging from a wood frame, I would think about bonding.

I'd say that vault or manhole lids wouldn't count as "likely to become energized", there are several threads on MH about that phrase. Probably not for the trench cover, too. I'd like to read what others think about this, I've been wrong many times before.

(What's the environment, anyway?)
 
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