I may be corrected, but, to me the simple solution would be to drive (2) ground rods (if you have no other electrodes) and connect them to the building steel. This allows your building steel to be used as a grounding electrode conductor. Bond it to your service per 250.104 & bond interior water to the steel.
Metallic joist and decking roof qualify as grounding electrodes?
- Thread starter marcosgue
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LarryFine
Master Electrician Electric Contractor Richmond VA
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- Henrico County, VA
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- Electrical Contractor
That's what I was saying. Even if the building steel does not qualify as an electrode, it can still be used as a conductive pathway between electrodes and equipment requiring them.
hillbilly1
Senior Member
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- North Georgia mountains
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Except in Charlotte NC. They have some weird rules in NC.
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