Extra heavy duty specification grade duplex receptacle. Traditional face shape. 20 A, 125 V, 2-pole, 3-wire grounding. Back and side wiring method. Finder groove face style. Isolated ground enhancement. No.8 to 32 brass or nickel plated for neutral terminal screw material. No.8 to 32 brass, multiple drive (green) ground screw material. Nylon top material. Reinforced PET base material. 0.037 inch (0.9) phosphor bronze power contacts material. 0.050 inch (1.3) brass mounting strap material. 0.05 inch (1.3) brass mounting strap material. Stainless steel auto ground clip material. Steel-zinc plated mounting screw material. Withstands 2000 V minimum dielectric voltage. Maximum 30°C temperature rise at full rated current after 50 cycles of overload at 150% of rated current at a power factor of 75%. Terminals identified in accordance with UL498 (brass, white, green) terminal identification. 14 to 10 AWG copper stranded or solid conductor only terminal accommodation. Ratings are a permanent part of the device product identification. -40 to 75°C (without impact) operating temperatures.