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#35281 - 03/07/04 09:37 AM grounding 4160v circuit  
jackman435  Offline
Junior Member
Joined: Dec 2003
Posts: 2
phila.,pa.
we are installing a 5kv S&C sw. that is feeding a 4160 - 480v transformer. my question is, does the equip. ground con. from transformer back to s&c sw. have to be rated for 5000v, or would 600v wire be ok?


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#35282 - 03/07/04 12:35 PM Re: grounding 4160v circuit  
Nick  Offline
Member
Joined: Aug 2001
Posts: 599
Riverside, CA
600V insulation or bare is OK.


#35283 - 03/07/04 04:36 PM Re: grounding 4160v circuit  
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
I agree with Nick. It’s routine for equipment-grounding/bonding conductors in medium-voltage systems to be relatively large compared to phase conductors, like in the 2/0-4/0 AWG size.



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