concentric knockouts

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concentric knockouts

#87910 04/29/04 10:10 PM

Joined: Jan 2004

Posts: 16

J

jmcelectric Offline

OP

Member

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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Re: concentric knockouts

#87911 04/29/04 10:11 PM

Joined: Aug 2003

Posts: 1,374

West Jordan, Utah, USA

R

Ryan_J

Moderator

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]