Two or three conductors are twisted together to form a pair or triple body. A separate shielding pair and a triad would have been completed by laying a 51 mm (2 inches). Shielding pairs and triad will have staggered to prevent electromagnetic interference and crosstalk.
Assembled pairs and triads are overall shielded with 100% coverage aluminum/polyester tape and seven strand tinned copper drain wire.
Conductor： 7 strands of concentric, B-class bare copper wire or tinned copper wire.
Main insulation: PVC Composite rated 105°c (221°f) dry Cross-linked polyethylene composite as 105°c (221°f) dry