BU647 Recessed downlights (luminaires) (2020)

LED technology has undergone significant changes in the past few years, making them an energy-efficient and cost-effective form of lighting as recessed luminaires. Retrofitting LED lamps into existing fittings can be done, but a better option may be to replace the luminaire.

This bulletin describes the classifications of recessed luminaires, their legislative and installation requirements and the range of lamps available. It replaces Bulletin 539 Recessed downlights.

This bulletin covers:

• legislation
• recessed luminaire classifications
• installation requirements generally
• lamps
• replacing lamps
• transformers.