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All branch circuits that supply outlets such as receptacles, light fixtures, smoke detectors, small window air conditioners/heat pumps, ceiling paddle fans, etc. installed in dwelling unit bedrooms shall be protected by an arc-fault circuit interrupter (AFCI) listed to provide protection of the entire branch circuit. Section 210.12 of 2004 California Electrical Code (2002 National Electrical Code).

2005 Building Energy Efficiency Standards (Standards) Effective October 1, 2005


Permanently installed lights in kitchen shall be of the high efficacy type, i.e.f fluorescent. Up to 50% of the total rated wattage of permanently installed lights may be not of high efficacy type if they are controlled by switches separate from those controlling the high efficacy type.

Permanently installed lights in bathrooms, garages, laundry rooms, and utility rooms shall be of the high efficacy type. These lights do not have to be the high efficacy type only if they are controlled by an occupant sensor conforming to Sec. 119 of the Standards. Such motion sensors shall not have a control that allows the lights to be turned on automatically or that has an override allowing the light to be always on.

High efficacy lights shall also be used in all other rooms. Non-high efficacy lights may be used in other rooms provided they are a) controlled by a dimmer switch, b) controlled by an occupant sensor conforming to Sec. 119 of the Standards, and c) located in closets less than 70 sq. ft.

All outdoor lighting mounted on a building shall be of high efficacy type. Non-high efficacy outdoor lights may be used if they are controlled by a motion sensor with integral photocontrol. Outdoor lighting in or around swimming pools, water features, or other locations subject to Article 680 of the California Electrical Code need not be of the high efficacy type.

Cool roof is required if compliance credit is taken for reflectance and emittance under Sections 141, 142, and 151(b) of 2005 Building Energy Efficiency Standards.


All low-rise conditioned or unconditioned enclosed spaces that are greater than 25,000 sq. ft. directly under a roof with ceiling heights greather than 15 ft. and have a lighting power density for general lighting equal to or greather than 0.5 watts w/sq. ft. shall be provided with evenly distributed skylights totaling an area equal to 1.8% of the roof area.

Cool roof is required on conditioned (heated or cooled) buildings that have low-sloped roofs (2:12 or less). It is applicable to new construction and most reproofs on existing buildings (exempt when reroof area is under 2,000 sq. ft. or 50% of existing roof area, whichever is less).

Windows in west-facing wall shall be limited to 40% of the wall area for commercial, highrise residential, and hotel/motel.

Note: For a complete list of changes mandated by the new 2005 Building Energy Efficiency Standards effective October 1, 2005, please visit

Last updated: 11/12/2011 1:27:33 PM