Grounding metal walls and roofs.

[nerspellsner]

I am wiring a horse barn with a indoor riding ring. It is about 130 feet by 180 feet. All of the framing is wood. The roof and and exterior walls are metal. I can not find anything in the NEC about grounding the metal exterior roof and wall panels. Do I have to ground or bond the metal? If so, am I grounding or bonding the metal? At how many points do I install a lug to attatch the grounding or bonding conductor? Thanks.

 

[George Stolz]

Re: Grounding metal walls and roofs.

Do I have to ground or bond the metal?

No.

If so, am I grounding or bonding the metal?

If you were to do it (voluntarily), you'd be bonding the metal to the electrical system, IMO.

At how many points do I install a lug to attatch the grounding or bonding conductor?

If you were required (which you're not), then you'd have to bond each panel together, since sheet metal screws are frowned upon by 250.8.

 

[realolman]

Re: Grounding metal walls and roofs.

I am not disputing whether or not it is required to be bonded, but thinking about it, it really doesn't seem like a bad idea at all to me.

[ February 23, 2006, 06:32 AM: Message edited by: realolman ]

 

[George Stolz]

Re: Grounding metal walls and roofs.

realolman, what benefit do you see about the idea?

 

[charlie b]

Re: Grounding metal walls and roofs.

Duplicate. Closed. Please continue the discussion here.