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Occupant sensor controls shall be provided to automatically reduce connected lighting power by not less than 45 percent during periods when occupants are not present in the following locations:
  1. Corridors and enclosed stairwells;
  2. Storage and stack areas not open to the public; and
  3. Parking garages.
Exception: Automatic power reduction is not required for the following:
  1. Where occupant sensor controls are overridden by time switch controls that keep lights on continuously during peak occupancy periods.
  2. Means of egress lighting required by the International Building Code or the International Fire Code.

Related Code Sections

Section 1204 Interior Environment, Lighting
of the interior room or 25 square feet (2.32 m2), whichever is greater. Exception: Openings required for natural light shall be permitted to open ...