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#63024 - 03/04/06 01:49 PM Bonding
Sparks30 Offline
Member

Registered: 03/23/02
Posts: 125
Loc: Connecticut.usa
I have a ongoing thing with my boss about bonding, we are doing a 450ft run of 4/0 and #2 ground. Going though 4 j-box's. There are no concentic k.o's all are punched, I say we should use bonding bushings not just locknuts for the bond. He says just plastic bushings. Who would be right. Thanks Sam

( This is a panel off the main gear )

[This message has been edited by Sparks30 (edited 03-04-2006).]

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#63025 - 03/04/06 02:55 PM Re: Bonding
bot540 Offline
Member

Registered: 09/14/04
Posts: 177
Loc: Vernon Hills, IL
While bonding bushings would not be a bad idea you don't need them. You only need them if using concentric or ecentric knockouts. Read 250.92 and 250.97
_________________________
Jesus may have been a capenter,but God was an electrician.Genesis1:3

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#63026 - 03/04/06 08:23 PM Re: Bonding
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
2005 NEC 250.92 is for services . As this is a feeder . (250.97) deals with Bonding over 250 volts to ground. If this was a 120/240 or 120/208 volt. Bonding bushings on a feeder would not be required Even if concentric or ecentric was involved. IF they were in good condition.

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#63027 - 03/04/06 08:46 PM Re: Bonding
bot540 Offline
Member

Registered: 09/14/04
Posts: 177
Loc: Vernon Hills, IL
Most inspectors around here(Northern Illinois) make you put them on with concentric or ecentric knockouts. Especially for feeders.
_________________________
Jesus may have been a capenter,but God was an electrician.Genesis1:3

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#63028 - 03/05/06 06:03 AM Re: Bonding
Sparks30 Offline
Member

Registered: 03/23/02
Posts: 125
Loc: Connecticut.usa
When the inspector looked at the underground branch he said he would be looking for the rigid sweeps and EMT to be grounded. Thanks for the input. Sam

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