 A solid-core cable uses one solid wire per conductor and in a four pair cable there would be a total of eight solid wires.Stranded conductor uses multiple wires wrapped around each other in each conductor and in a four pair with seven strands per conductor cable, there would be a total of 56 wires (2 per pair × 4 pairs × 7 strands).Solid core cable is intended for permanently installed runs (permanent link).