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Last edited 29 Jul 2021
The Illustrated Guide to Electrical Building Services, Third Edition (BG 32/2014), by David Bleicher & Peter Tse, published by BSRIA in 2014, states: ‘This type of luminaire has either a plastic, aluminium or glass reflector and generally uses a high intensity discharge lamp of up to 1000 W. They are also available for use with compact fluorescent lamps and LEDs. They are suited to high-ceiling industrial and commercial buildings.’
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