Pass Seymour® Turnlok® Heavy-duty single receptacle. NEMA L5-30R configuration number. Isolated Ground symbol and molded-in isolated ground markings for easy identification and circuit delineation. Clearly marked NEMA configuration, rating and third party listing on each unit's face. One-piece, high-grade brass contacts offer excellent conductivity and heat-rise resistance. Single-piece, solid brass mounting strap is free of easily loosened rivets found on other brands.15 A mounting strap is steel. Compact, impact-resistant nylon face and body are ultrasonically welded together for unrivaled strength. Side and external screw-pressure plate back wire capability. Accepts 10 to 14 AWG.