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250.104(C) for the steel in the basement

I have to disagree with that.

The steel in a typical basement does not make up the frame of a wood structure.

I also feel that isolated sections of steel are not going to become energized.

2002
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250.104(C) Structural Steel. Exposed structural steel that is interconnected to form a steel building frame and is not intentionally grounded and may become energized shall be bonded to the service equipment enclosure, the grounded conductor at the service, the grounding electrode conductor where of sufficient size, or the one or more grounding electrodes used. The bonding jumper(s) shall be sized in accordance with Table 250.66 and installed in accordance with 250.64(A), (B), and (E). The points of attachment of the bonding jumper(s) shall be accessible.

[This message has been edited by iwire (edited 11-19-2006).]


Bob Badger
Construction & Maintenance Electrician
Massachusetts