Explosionproof Pin and Sleeve Receptacle Voltage Rating 125 VAC Current Rating 20 Ampere Number of Poles 3 Number of Wires 2 Material Copper Free Aluminum Mating Plug ECP Enclosure Class I Div 1 and 2 Group B C D, Class II Div 1 and 2 Group F G, Class III, NEMA 3/3R/7B/7C/7D/9F/9G Approval UL 894/1010/1203, CSA C22.2 Application Lighting system, Conveyor, Heater, Motor Generator Set, Air Conditioner, Compressor, Pumps