Central Office Power Wire and Cable Class B Strand Without Braid. Flexible, stranded, tinned, annealed copper connecting cable for use in telecom equipment where there are requirements for low inductance and good temperature resistance. Available in low smoke, zero halogen, shielded & unshielded, riser & plenum rated. UL Central Office Power Cable 105deg C dry, 60deg C wet, 600 volts, Sizes 10 AWG – 1/0 and larger. UL 1277 & UL 1685