SOUTHWIRE's #8 TelcoFlex gray L4 Class I, cloth braid.brbrSouthwire's TelcoFlex(R) IV 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 Underwriters Laboratories requirements. An opaque mylar tape shall be applied over the conductor to facilitate stripping. Insulation is 90 deg. C rated limited smoke, non-halogen, TelcoHyde (TM) 5221 conforming to Underwriters Laboratories standard 44 and Telcordia Specification GR-347-CORE, also UL and CSA 105 deg. C AWM rated. The insulation has a limiting oxygen index of 35%.