Extra hard usage per NEC. Used for garages, portable tools and lights, battery chargers. Weather resistant for outdoor applications, dishwashers and refrigerators. Resists most acids 10 AWG through 14 AWG, 60 degree Celsius to 105 degrees Celsius. Soft annealed stranded copper per ASTM B3-90 conductor. TPE class 36, rubber insulation. TPE weather resistant class 36, rubber jacket. U.L. 62, UL1581, CSA approved.