WAC 51-11C-405061. Section C405.5.1 — Exterior building grounds lighting

C405.5.1 Exterior building grounds lighting. All exterior building grounds luminaires that operate at greater than 25 watts shall have a minimum efficacy of 100 lumens per watt. EXCEPTIONS: 1. Luminaires controlled by a motion sensor. 2. Luminaires that qualify for one of the exceptions under Section C405.5.2.