Several circuits of 12470, running thru manholes, deadbreak elbows in junctions, metal ladder , metal cable supports,
Ground bar, two ground rods, all grounds and shields tied together.Sound Ok???

Sounds like the kind of installation that should be engineered.
I would follow the specs and drawings.

Ed

Omission of an {often} bare-copper conductor in the same raceway with the phase cables may accelerate damage {in fault situations} to the tape/drain-wire shield under the MV-cable jacket. The additional grounding conductor is routine, well-considered boilerplate for many.



[This message has been edited by Bjarney (edited 10-17-2002).]

Guys
Theres two 500mcm in the concrete of the duct bank to each manhole and tied to the groundinging bar in each manhole. As far as designing eng. We;re it.

Yoop—

Sounds like you've covered it thoroughly. Is someone complaining about a “deficiency”?

Someone may be sniveling about expecting to see “IEEE std 837”-grade connections, but that's not an NEC or NESC requirement. [If it's specified in contract documents, that's a whole 'nother matter.]
http://www.fciconnect.com/products/technical_01_01_02.asp