Lutron has a variety of commercial controls that meet Title 24 code requirements. See a detailed list of these products below.

Area Controls

Each space enclosed by ceiling height partitions will have at least one device to independently control the general lighting within the space. Each manual device will be readily accessible and located where occupants can see the controlled lighting.

The control device can be a manual control or an occupancy sensor. It must be able to override other devices, such as a timeclock control device.

Display lighting must be separately switched on circuits that are 20 amps or less.

Exceptions:

• Up to 0.5 W/ft² of lighting for security or egress
• Areas where only authorized personnel are allowed to use the switches

All control devices must be CEC certified.

Multi-level Lighting Controls

These devices reduce lighting power by either continuous dimming, stepped dimming, or stepped switching while maintaining a reasonably uniform level of illuminance throughout the controlled space.

Multi-level lighting controls will be used for any enclosed space 100 ft² or larger that has a connected lighting load greater than 0.8 W/ft², and that has more than one luminaire. The multi-level lighting controls must have one control step that is between 50% and 70% of design lighting power and at least one step of minimum output operating at less than 35% of full rated lighting system power (this could be completely off).

Exceptions:

• Corridor lighting

Automatic Shut-off

Interior lighting in buildings will be controlled with an automatic control device to shut off building lighting in all spaces.

This device may be an occupant sensor, timeclock, or other device capable of automatically shutting off lighting.

If a timeclock device is used, it must:

1. Have holiday feature, which turns off the lights for at least 24 hours during a holiday
2. Have a readily accessible manual override device, which is located where the person using the override can see the lights
3. Have an override limit of not more than 2 hours (with some exceptions)
4. Control an area less than 5,000 ft² or less than 20,000 ft² for malls, auditoriums, single-tenant retail spaces, industrial facilities, convention centers, and arenas

Exceptions:

• Areas continuously lit, 24 hours per day/365 days per year
• Lighting in corridors, guest-rooms, and lodging quarters of high-rise residential buildings and hotels/motels
• Up to 0.5 W/ft² of lighting for any area that must be lit for security or emergency egress

Daylighting

Lighting power will be reduced in areas where the daylight can help illuminate the space. Daylit areas in enclosed spaces greater than 250 ft² must have a light control that:

1. Controls at least 50% of the power in the daylit areas separately from other lighting in the space
2. Controls luminaires in vertically daylit areas separately from horizontally daylit areas
3. Maintains a reasonable uniform level of illuminance in the space

Daylit areas in enclosed spaces under skylights that are larger than 2,500 ft² must use a multi-level daylighting control or astronomical timeclock device with override capability.

Exceptions:

• Daylit areas where the effective aperture is less than 0.1 for vertical glazing and less than 0.006 for skylights
• Areas where obstructions make daylighting infeasible

Lutron Systems for CEC Title 24

For Additional Information

Call the CEC:
• Inside California 1-800-772-3300
• Outside California 916-654-5106
Visit the CEC website at www.energy.ca.gov/title24

For clarification of terms used on this page, please review Lutron's glossary of terms.