I posed this question a couple of weeks ago to the chief electrical inspector for the City of Los Angeles in a grounding class he taught at our shop.
He had a drawing of a typical panel (480/277) feeding a transformer feeding a panel. (120/208). I asked if the 480/277V panel in the diagram was the service equipment, would it be acceptable to run the grounding electrode conductor through the primary conduit with the primary feed to the building grounding electrode system.
However, now the primary conduit must meet the same bonding requirements as a GEC in it’s own metal conduit.
You could accomplish that pretty cheap by punching your KO’s and using bonding lock nuts.
PS: I got the colored MC from Alflex. Now I have every color combonation under the sun. What an invintory nightmare!
It will make for a nice instal when we are done though.
[This message has been edited by Nick (edited 01-25-2002).]