155. The electrical load of all wired-in and plugged-in lighting fixtures, including ballasts and other control gear, may not exceed an average of:
(1) 22 W/m2 of floor area for office spaces exceeding 100 m2, in major occupancies classified as business and personal services occupancies; and
(2) 85 W/m2 of floor area for major occupancies classified as mercantile occupancies and whose floor area exceeds 100 m2. However, in an occupancy with rooms used for retail sale and linked by inside corridors, the electric load for all the lighting fixtures in those rooms may not exceed an average of 85 W/m2 of floor area for all the rooms, or an average of 50 W/m2 for the occupancy.