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#87910 - 04/29/04 07:10 PM concentric knockouts
jmcelectric Offline

Registered: 01/20/04
Posts: 16
i can`t find any code article on concentric ko`s that says i need a bonding bushing,other than service i need a bonding bushing with a feeder to a panel if the conduit is being used as the equipment grounding conductor?what if i have a seperate ground wire ?any help would be appreciated.

2014 / 2011 NEC & Related Books and Study Guides
#87911 - 04/29/04 07:11 PM Re: concentric knockouts
Ryan_J Offline

Registered: 08/19/03
Posts: 1355
Loc: West Jordan, Utah, USA

I'm sorry JMelectric. I should have at least said welcome to the forum. My bad.

Anyway, welcome to the forum. Take a look at 250.97 which addresses over 250V systems very clearly, then see 250.96 which addresses under 250V systems very not so clearly

[This message has been edited by Ryan_J (edited 04-29-2004).]
Ryan Jackson,
Salt Lake City

#87912 - 04/29/04 07:38 PM Re: concentric knockouts
jmcelectric Offline

Registered: 01/20/04
Posts: 16
a little gray but after reading it a few times it makes sense ..thanks


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