Some few years ago I ran across a specialized cable for RS485 data communication.
The cable was double shielded, heavy duty jacket, two power conductors and a separate twisted pair for data, not sure if it had one more layer of shield over that.
My Google searching did not get me any promising results so any information any one ca share in this matter will be greatly appreciated.

Please use the description above for the basic requirements for the type of cable I need.

Regards,

Nick