ASHRAE 90.1-2004

Section: 9.4.4 - Exterior Building Grounds Lighting

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All exterior building grounds luminaires that operate at greater than 100 watts shall contain lamps having a minimum efficacy of 60 lm/W unless the luminaire is controlled by a motion sensor or qualifies for one of the exceptions under 9.1.1 or 9.4.5.

Exceptions:

See 9.1.1 and 9.4.5.