ConstructionStranded coated copper conductors. The insulation shall be either fire retardent ethylene propylene rubber (FREP) or fire retardant cross-linked Polyethylene (FRXLPe). Method 1-Table K1 color-coded, conductors twisted with suitable fillers, CSPE jacket overall, surface printed.Standards1) Individual conductors pass UL Standard 44 and the VW-1 vertical flame test.2) Cables Pass IEEE-383 ribbon burner flame test.3) Cables meet requirements of ICEA Pub. No. S-66-524, NEMA Pub. No. WC7, Cross-linked Polyethylene Insulated Wire and Cable.