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#19718 - 01/01/03 08:10 PM grounging bushings
flush Offline
Member

Registered: 12/14/01
Posts: 12
Loc: nj
mt question is when do i need a grounging bushing, the one where a ground wire gets luged in the bushing ..... ive done it on commercial jobs but not really sure where i have to ....any code refrence would be good to ....thanks

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#19719 - 01/01/03 11:37 PM Re: grounging bushings
sparky66wv Offline
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Registered: 11/17/00
Posts: 2339
Loc: West Virginia
One instance where they are required is when installing conduit or conduit fittings to service enclosures that have KOs, eccentric and concentric. If you were to knock out the largest KO, then I guess it would be the same as punching or drilling a hole, and no bonding-bushing or bonding-locknut is required.

250.92(B)

Use PVC for the nipple or conduit between the meterbase and disconnect/panel and avoid the whole ugly mess.
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#19720 - 01/02/03 04:06 AM Re: grounging bushings
Redsy Offline
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Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA
See 250.97 for voltages greater than 250 V.
They are treated similar to services.

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