SOUTHWIRE 56986001 TelcoFlex II Central Office Power Cable, 6 AWG, Single Conductor, Class 1 Flexible Strand Without Braid, LSZH, 600 Volts, Green. Southwire’s TelcoFlex II Cable is single conductor with a class I (modified) bunched (8 and 6 AWG) and rope-bunched (4 AWG and larger) stranded tinned copper conforming to ASTM B-33 and Underwriter’s Laboratories requirements. An opaque mylar tape sh all be applied over the conductor to facilitate stripping. Insulation is 90C rated low smoke, non-halogen, TelcoHyde(TM) 5221 conforming to Underwriter’s Laboratories Standard 44 and Telcordia Specification GR-347-CORE, also UL and CSA 105C AWM rated . The insulation has a limiting oxygen index of 35%.