Page 196 - Solar Power in Building Design The Engineer's Complete Design Resource

166 ENERGY CONSERVATION

Zone LZ1. Government assigned area

Zone LZ2. Rural areas as defined by the U.S. 2000 census
Zone LZ3. Urban areas as defined by the U.S. 2000 census
Zone LZ4. Currently not defined

SIGNS
Sign standards contain both prescriptive and performance approaches. Sign mandatory
measures apply to both indoor and outdoor signs. Prescriptive requirements apply
when the signs are illuminated with efficient lighting sources, such as electronic bal-
lasts, while the performance requirement is applied when calculating the maximum
power defined as a function of the sign surface area in watts per square foot.

INSTALLED POWER
The installed power for outdoor lighting applications is determined in accordance with
specific mandatory measure calculation guidelines. Luminaire power for pin-based
and high-intensity discharge lighting fixtures may be used as an alternative to deter-
mine the wattage of outdoor luminaires. Luminaires with screw-base sockets and
lighting systems, which allow the addition or relocation of luminaires without modi-
fication to the wiring system, must follow the required guidelines. In commercial
lighting systems no power credits are offered for automatic controls; however, the use
of automatic lighting controls is mandatory.

MANDATORY MEASURES

Similar to indoor lighting, mandatory features and devices must be included in all out-
door lighting project documentation, whenever applicable. The mandatory measures
also require the performance of equipment to be certified by the manufacturers and
that fixtures rated 100 W or more must have high efficiency; otherwise they are
required to be controlled by a motion sensor. Fixtures with lamps rated 175 W or more
must incorporate directional baffles to direct the light toward the ground.

Fixture certification Manufacturers of lighting control products are required to cer-
tify the performance of their products with the CEC. Lighting designers and engineers
must assume responsibility to specify products that meet these requirements. As a rule,
inspectors and code enforcement officials are also required to verify that the lighting
controls specified carry CEC certification. The certification requirement applies to all
lighting control equipment and devices such as photocontrols, astronomical time
switches, and automatic controls.
Control devices are also required to have instructions for installation and startup
calibration and must be installed in accordance with the manufacturer’s directives. The
control equipment and devices are required to have a visual or audio status signal that
activates upon malfunction or failure.