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An auditor measures 1000 lux in a warehouse aisle where 150 is required. The recommendation is

  • A.to reduce the installed lighting substantially
  • B.to relamp the installation with higher efficacy lamps
  • C.to fit occupancy sensors and leave the lighting as it is
  • D.to raise the mounting height of the luminaires

Answer: A

Nearly seven times the requirement is a large and immediate saving available by removing luminaires or switching alternate rows, and it costs almost nothing. Relamping a grossly over-lit space at the same output would waste most of the investment.

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