Ключевые слова:
Screw lamp caps, Lamp caps, Lamps, Lighting equipment, Edison screw threads, Testing conditions, Marking, Dimensions, Protected electrical equipment, Electrical safety, Switches, Electrical testing, Mechanical testing, Watertightness tests, Electrical insulation, Dielectric-strength tests, Clearance distances, Heating tests, Thermal testing, Corrosion tests, Fire tests