Descriptors | Tensile testing, Torsion testing, Earthing, Deformation, Marking, Holding devices, Screws (bolts), Edison screw threads, Watertightness tests, Fire resistance, Cracking, Impact testing, Tracking tests, Rated current, Rated voltage, Damp-air tests, Lamp caps, Thermal resistance, Test equipment, Classification systems, Thread gauges, Thermal testing, Lighting equipment, Temperature-rise limit, Leakage paths, Corrosion tests, Thread forms, Electric terminals, Testing conditions, Rust, Strength of materials, Mechanical testing, Thermal-cycling tests, Designations, Electrical insulation, Resistance measurement, Screw lamp caps, Electrical testing, Dimensions, Protected electrical equipment, Electric shocks, Switches, Dielectric-strength tests |