22 August 2006
5-3.3.3 In decorative wall sconces, pendants, table lamps, and torchiers, use 3000K
CFL. Use either 3000K or 3500K CFL for wall washers, exterior pedestrian and
landscape lighting. In other cases, match the color temperature of all different kinds of
lamps in an area.
Requirements for compact fluorescent lamps:
Do not use compact fluorescent lamps less than 13 watts.
Use electronic or electronic dimming ballasts for all CFL.
Do not mix compact fluorescent lamp color temperatures within a single
building to minimize maintenance and the chance of visual confusion.
U-Bent fluorescent lamps are not economically feasible and should not be
used. (An economic analysis must be completed if there is another
compelling design reason for using them.)
Considerations for compact fluorescent lamps:
Use 3000K and 80 CRI as the default color temperature and color
rendering index for residential, hospitality, food service, childcare, and
Use 3500K and 80 CRI as the default color temperature and color
rendering index for commercial, office, and educational projects.
Linear Fluorescent Lamps. Linear fluorescent lamps are recommended for
the majority of ambient area lighting, including high spaces. Linear fluorescents come
in a variety of wattages and sizes, yet the most common and energy efficient lamps are
the T8 and T5HO. These lamps are ideal for linear pendants, linear recess wall
washers, recess wall slots, cove lights, stack or aisle lights, industrial and recreational
5-3.4.1 The advantages of linear fluorescents include energy efficiency, high color
rendering, instant on/off switching, dimming capability, long life, and cost effectiveness.
5-3.4.2 Depending on the application, the T5HO (high output) can provide a more
efficient alternative to the T8. Because this lamp produces a high level of light from a
small lamp envelope, care must be given to shield the lamp from direct view unless
used in a high ceiling application. In those cases, the luminaire reflector should be
white and have an indirect component to balance out the lamp brightness.
5-3.4.3 High performance T8 lamps, sometimes referred to as "Super T8s," have the
advantages of better color rendition and additional light output. By using optimized
ballasts with these high performance lamps, the lamps gain a significant life advantage
as well. This system for (1) 1.2 m (4 ft) T8 lamp produces 3100 initial lumens, uses 25
watts, provides 85 CRI, and has an average life of 30,000 hours. It is important to keep