grounding pole building sheet metal?
Should the sheet metal (steel) siding and roofing of a post frame building be grounded?
If so should it be bonded to the ground bar or ground rod of the building's electrical panel?
My pole building sheet metal does not contact the earth. The metal is painted and may have electrical bonding between the panels either at a common fastener or bare spots in the finish.(or maybe not, who knows)
Also the electrical panel is installed on wood framing with no fasteners touching the metal siding. The electrical panel ground bar is bonded to ground rods but the bond is insulated from the metal siding.
I have looked at similar buildings(wood frame) in my area and see no evidence of grounding of the sheet metal except by accidental contact.
This building is used as a machine shop/storage building, no farm animals.
Is there a right way? or a better way? or does it make any difference?
Structural metal. If exposed structural metal that forms a metal building frame is likely to become energized, you must bond it to (Fig. 3) one of these [250.104(C)]:
The text and image borrowed from Mike Holt enterprises
Pictures speak a thousand words
Hope this helps
I did read Mike Holt's interpretation, although my internet search didn't find the one you posted here.
Since grounding the sheet metal is not mandatory, but preferred, it sounds like expense may be the big issue. I will give it some consideration anyway.
|All times are GMT -5. The time now is 03:00 PM.|