Feeder Grounded Conductor Minimum Size

[beanland]

2011 NEC 215.2(A)(2) appears to refer to itself. "Additional minimum sizes shall be as specified in 215.2(A)(2)..."

Can anyone explain that reference?

 

[walkerj]

The grounded conductor can be no smaller than the EGC so as to allow it to carry fault current.

 

[Dennis Alwon]

215.2(A)(2) is pretty clear. The grounded conductor (neutral) shall not be smaller than the egc from T. 250.122. Thus a 100 amp feeder would need a neutral sized at #8. Remember if the feeder doesn't require a neutral then one is not required. If you decide to pull one for future use then it cannot be smaller than the egc, as Walker stated above.