UFC 3 -520-01
June 10, 2002
Emergency lighting.
F-6.2
Full Size and U -Bent Fluorescent Lamps.
F-6.2.1 Full size and U-bent fluorescent lamps include most straight and U-bent
lamps from 152 milli meters (6 inches) in length through 2.4 meters (8 feet).
F-6.2.2 Lighting systems employing full size and U-bent fluorescent lamps should be
considered acceptable choices in the majority of interior applications. Wherever
possible, designs should utilize 32-watt T8 lamps with a minimum CRI of 70 and a
minimum output of 2,800 lumens. Specific lamp color should be determined in
accordance with paragraphs F -4.2 through F-4.3. Secondary preference should be
given to F96T8, F25T8 and F17T8 straight lamps, and to F32T8 U-bent lamps. T12
lamps should not be used in major lighting system applications.
F-6.2.3 Fluorescent lamp ballasts should be electronic, high frequency type. Ballasts
should be selected with consideration for ballast factor , harmonic distortion, and other
parameters. Designs should employ multi -lamp standard ballast factor ballasts with
total current harmonic distortion less than 20 percent. Various ballast factors, dimming
capabilities, and low harmonic distortion ballasts might be required for specific
applications.
F-6.2.4 In cold temperature installations, fluorescent lights can be slow to start and
will produce less light output.
F-6.3
Compact Fluorescent Lamps.
F-6.3.1 Compact fluorescent lamps include most twin tube, quad (double -twin) tube,
hex (triple twin tube), helical, double -D, and similar forms of fluorescent lamps.
Compact fluorescent lamps are further subdivided into those with plug or pin bases, and
those with medium bases.
F-6.3.2 Lighting systems employing plug - and pin-based compact fluorescent lamps
should be considered acceptable choices in a number of interior applications. Newer
twist-type sockets simplify replacement. Wherever possible, designs should utilize 13-
watt twin and 26-, 32-, or 42-watt hex lamps with a minimum CRI of 80. Specific lamp
color should be determined in accordance with paragraphs F -4.2 through F -4.3.
Secondary preference should be given to other wattages and shapes. In no event
should medium based (screw-in) compact fluorescent lamps be used in major lighting
system applications.
F-6.3.3 Compact fluorescent lamp ballasts for 13-watt lamps can be magnetic or
electronic. Ballasts for 26 to 42 watt lamps should be electronic, high frequency type.
and other parameters. Designs should employ standard ballast factor ballasts with total
current harmonic distortion less than 20 percent. Various ballast factors, dimming
F-9
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