Originally posted by sparky:
#1-
we can either run a separate N & G wire, and run G-rods off the G-bar ( N would be isolated, or 'floating')
OR......
#2-
we can run one conductor serving the purpose of both N & G, and run G-rods off the common bar.
Correct me if I'm wrong, but I believe the NEC specifies that a sub-panel has to have separate neutral & ground. Do I take it that a sub-panel in a separate building is treated as special case and is exempt from this requirement?
In this case (#2), I can see that a parallel ground rod would certainly be desirable.
In case #1, is the second rod an NEC requirement, or just common practice?
