Parallel Ground with Feeder

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Hameedulla-Ekhlas

Hameedulla-Ekhlas

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Dear all,
I am really confused in distribution system. There is a 65 meter 4xcore a feeder length and I have been asked for a parallel ground conductor for this feeder. Is it required by NEC code to put one ground conductore parallel to feeder in distribution system.

Please advise me,

BR
Hameedullah Ekhlas
 
Hameedulla-Ekhlas said:
Dear all,
I am really confused in distribution system. There is a 65 meter 4xcore a feeder length and I have been asked for a parallel ground conductor for this feeder. Is it required by NEC code to put one ground conductore parallel to feeder in distribution system.

Please advise me,
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Need more info but generally you need one ground. If you have a parallel feeders in different conduits then you would need a ground in each pipe.
 
Hameedulla-Ekhlas said:
thanks for your information and is there any code reference about this parallel ground with feeder NEC , IEEE, or IEC
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Try article 310.4(C) Nec


310.4 Conductors in Parallel.
(C) Separate Cables or Raceways. Where run in separate cables or raceways, the cables or raceways with conductors shall have the same number of conductors and shall have the same electrical characteristics. Conductors of one phase, polarity, neutral, grounded circuit conductor, or equipment grounding conductor shall not be required to have the same physical characteristics as those of another phase, polarity, neutral, grounded circuit conductor, or equipment grounding conductor to achieve balance.
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You would also be well advised to take a look at 250.122(F) for sizing an ECG when there are paralleled conductors.

Chris
 
much of what you ask would be predicated on the location of the wiring system. NEC uses a separate equipment ground and grounded conductor for a premises wiring system. you mentioned distribution system, which we generally take to mean a utility distribution system, and that is often guided by NESC rules, which do not generally use a separate grounding conductor.
 
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