Type-SIS Ultility cable with 18 AWG thru 2 AWG tinned/annealed copper, 18 AWG thru 10 AWG class-K stranding and 8 AWG thru 2 AWG class-H stranding conductors. Flame-retardant, heat, moisture and radiation resistant, cross-linked polyethylene insulation. Predominantly used in utility substations switchboards. For use in class-1E low voltage applications in operation and interconnection of protective devices where optimum performance is required.