1000FT 25 Pair PVC Comtran Corp. Cable. Solid Bare Copper Conductors. Band Marked PVC Insulation. Ripcord for Easy Jacket Stripping. Gray PVC Jacket. Meets CAT3 Electrical Requirements. Used for telephone system wiring, is the mandatory minimum cable specified by the FCC for new home constructions in order to ensure broadband capabilities. Cat 3 cable can be used for network installations, although for this purpose it has been abandoned in favor of higher speeds produced by the newer Category 5e and Category 6 cable.