Receptacle Single 5wire 20amp 277/480volt Turnlok.FEATURES AND BENEFITS:• Compact, impact-resistant nylon face and body are ultrasonically welded together for unrivaled strength. • Face color coding by voltage facilitates locating and mating of proper devices. • One piece, high-grade brass contacts offer excellent conductivity and heat-rise resistance. • Clearly marked NEMA configuration, rating, and third-party listing on each unit's face. • Single-piece, solid brass mounting strap is free of easily loosened rivets found on other brands. • Side and external screw-pressure-plate back wire capability. • Accepts #14 - #10 AWG.