An increase in light level (illuminance) is easier to achieve than a reduction in loading when existing luminaires are modified.
More significant reductions can be achieved by fitting more efficient high frequency fittings and 'downsizing' with ballasts controlling a number of linked luminaires.
Good maintenance and regular replacement of lamps can help avoid the need for over-specification.
Dimming Technology is available for high frequency control gear. Its applicability may be determined from audit
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