Single family dwelling with a 200 amp service from the utility located at the dwelling, service disconnecting means and overcurrent protection located at dwelling.
Property has a seperate horse barn out back.
If I install a underground 4-wire single phase feeder in PVC to the horse barn from the dwelling, is the equipment grounding conductor of the 4-wire feeder required to be:
1) The same size as the ungrounded supply conductors?
2) Insulated or covered copper only?
I'm using the 2005 NEC as a guide and the new part (C) of 547.9 seems to allow the standard sizing requirements of table 250.122 to apply to the equipment grounding conductor of a 4-wire feeder to the barn as described above.
shortcircuit
