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Code Q&A

Feb 26, 2006 6:05 PM, By Mike Holt

Q. Is it good practice to bond the lightning protection system to the building grounding electrode system?

A. The Code requires the lightning protection system, if provided on a premise, to be bonded to the building or structure grounding electrode system [250.106]. This bonding connection is designed to minimize the difference of potential between the lightning protection system and the electrical system, which should reduce arcing between metal parts within the building.

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