A flame retardant, irradiation crosslinkable, polyethylene copolymer wire insulation material. It is recommended for use in 600 volt power cable and control cable applications and is suitable for 90°C service in wet locations. This product is formulated for use in XHHW, RHW, RHH, SIS, and USE A, B or C applications and is VW-1 on 14 AWG wire with a 30 mil (0.76 mm) insulation wall thickness. This compound has been approved for constructions for UL Style 20292. Each manufacturer must contact UL regarding approval requirements for the intended application. Optimum performance is obtained at an irradiation dosage level of 20 megarads.