Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; Electrical induction heating apparatus for heating metal workpieces; Infrared lamps; Infrared radiation units for curing adhesives for use in automated manufacturing process, namely, thermal spot curing systems; Lighting tracks; Portable electric heaters; Solar energy receivers; Theatrical stage lighting apparatus; Ultraviolet lamps not for medical purposes; UV halogen metal vapour lamps