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Task lighting combined with reduced general lighting saves energy because

  • A.the high illuminance is provided only where the task is
  • B.task luminaires have a higher efficacy than general ones
  • C.the general lighting can then be switched off entirely
  • D.the task luminaires need no maintenance factor

Answer: A

Lighting a whole workshop to the level a fine inspection bench needs is enormously wasteful, and a local luminaire at the bench with a lower ambient level gives better seeing for less energy. Some general lighting is always retained for circulation and comfort.

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