proximity of power cable to comm. cable

[steve225]

Is there a minimum seperation by code when power cable and comm. cable are in the same duct bank? Both cables are in their own conduit. Power is 3 phase, comm. is coax.

 

[bennie]

Re: proximity of power cable to comm. cable

A duct bank is where ducks keep their money.

NEMA Bulletin No. TCB2 discusses duct arrangements for underground plastic duct.

The interior ducts, in a bank, are called dead ducts,(not a pun) The exterior ducts should be used for heat producing cables.