BS IEC 60309-1. Plugs, socket-outlets and couplers for industrial purposes. Part 1. General requirements|Low-temperature testing, Industrial, Dimensions, Ratings, Electric cables, Electrical connections, Copper, Clearance distances, Heat ageing tests, Electrical testing, Screws (bolts), Watertightness tests, Test equipment, Copper alloys, Electric connectors, Fire resistance, Classification systems, Electric contacts, Electric sockets, Mechanical testing, Thermal resistance, Temperature, Temperature rise, Electric plugs, Electromagnetic compatibility, Earthing, Electric terminals, Type testing, Corrosion resistance, Corrosion tests, Breaking capacity, Interlocks, Size, Rated voltage, Circuits, Marking, Testing conditions, Thermal testing, Cable junctions, Protected electrical equipment, Electrical safety, Rated current, Low-voltage equipment, Flexible conductors, Endurance testing, Dielectric-strength tests, Damp-air tests