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conductor inductance #165861 07/06/07 04:21 PM
Joined: May 2003
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barbwire Offline OP
Junior Member
O.K. next question, I have a 110/208 volt sw gear with 2 sections, feeding out to 6 closets are 2 sets of 400 amp feeders,paralleled, (fed underground), if I want to keep a good pattern in my riser bank I may have to utilize two conduits in different sections of gear, they come out of the ground about 4 ft apart, as long as I keep the conductors together out of each conduit does this comply with 300-20?

2017 / 2014 NEC & Related Books and Study Guides
Re: conductor inductance [Re: barbwire] #165887 07/07/07 02:11 AM
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gfretwell Online Content
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You didn't say if these were metal raceways but if you keep the conductor sets grouped it really doesn't make any difference. Keep all the conductors from each circuit in one pipe. Where you have parallel sets, keep each set together (A/B/C/N in one pipe A/B/C/N from the parallel set in another pipe)
All of the "Goes Outtas" have to balance all of the "Goes Innas"


Greg Fretwell
Re: conductor inductance [Re: gfretwell] #165897 07/07/07 10:18 AM
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barbwire Offline OP
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Sorrry, raceways are PVC underground with a change over to rigid coming through the slab. Thanks for the reply, makes sense.


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