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#87910 - 04/29/04 10:10 PM concentric knockouts  
jmcelectric  Offline
Member
Joined: Jan 2004
Posts: 16
i can`t find any code article on concentric ko`s that says i need a bonding bushing,other than service equipment.do 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.


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#87911 - 04/29/04 10:11 PM Re: concentric knockouts  
Ryan_J  Offline
Moderator
Joined: Aug 2003
Posts: 1,374
West Jordan, Utah, USA
250.97


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 [Linked Image]

[This message has been edited by Ryan_J (edited 04-29-2004).]


Ryan Jackson,
Salt Lake City

#87912 - 04/29/04 10:38 PM Re: concentric knockouts  
jmcelectric  Offline
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Joined: Jan 2004
Posts: 16
a little gray but after reading it a few times it makes sense ..thanks



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