system ground in feeder conduit?

[Gary D.]

I have a renno which requires (by engineer spec) a new ground grid and new Tx. The new secondaries pass through a pull box before the main disconnect. Is it allowable to run the new system ground conductor through a feeder conduit from the CDP to the pull box, and then on to the grid in it's own conduit? (conduit fill is not an problem)

[electric-ed]

I'm not sure what to tell you on this one, I think it's going to be the inspectors call.

Rule 10-806 covers system grounding conductor installation.
Subrule 5 implies that the grounding conductor can be "in the same raceway with other conductors of the system to which it is connected".

However, Subrule 4 states that if the raceway is metal, it would have to be "continuous".
It appears that you could do what you proposed if the conduit is PVC.

Good luck,
Ed