13 A plugs, socket-outlets, adaptors and connection units. Specification for adaptors|Wear tests, Dielectric-strength tests, Plug adaptors, Test equipment, Electric connectors, Impact testing, Torsion testing, Electrical testing, Calibration, Socket adaptors, Tracking tests, Electrical household appliances, Labels, Thermal testing, High-voltage tests, Fuses, Type testing, Breaking capacity, Thermal resistance, Electric pins, Safety measures, Fuse-links, Endurance testing, Mechanical testing, Rated current, Earthing, Temperature rise, Bend testing, Testing conditions, Pull-out tests, Electric terminals, Clearance distances, Residual stresses, Classification systems, Environment (working), Heat ageing tests, Penetration tests, Leakage paths, Marking, Fire tests, Damp-air tests, Deflection tests, Flexible conductors, Electrical safety