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This article was posted 03/10/2006 and is most likely outdated.

Grounding vs Bonding: 250.80 Service Enclosures

March 10, 2006

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PART IV. GROUNDING (BONDING) OF ENCLOSURE, RACEWAY, AND SERVICE CABLE

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250.80 Service Enclosures.

Metal raceways and enclosures containing service conductors must be grounded (bonded) to an effective ground-fault current path [250.4(A)(5)].

Exception: Metal elbows having 18 in. or more of earth cover aren’t required to be grounded (bonded) to an effective ground-fault current path. Figure 250–122

Figure 250–122
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Comments

Mike is right about the Ray Mullins book. I hate to say it, I studied one or two of them when I was in late High School, ("GULP" ± 40 years ago!) I do not recall a single thing that was leadin gme wrong after all these years.

Lynn Adams

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