UFC 3 -520-01
June 10, 2002
F-6.10
High Pressure Xenon and Carbon Arc Lamps. High-pressure xenon and
carbon-arc lamps are technologies optimized for searchlights and similar applications.
These sources should only be used in these specialized and unique applications.
F-7
SETTING ENVIRONMENTAL AND INSTALLATION REQUIREMENTS.
F-7.1
Wetness. Determine whether "dry", "damp", or "wet" conditions apply. Refer
to NEC Article 100 (I) for the definition of damp, dry, and wet locations.
F-7.2
Environmental Conditions. Determine whether any special environmental
conditions apply, such as a corrosive or explosive atmosphere, extremely cold or hot
locations, marine/salt water atmosphere, clean room, food preparation area, or other
unusual requirements.
F-7.3
Structural Support. Determine the supporting means for the lighting
systems, including specific considerations for seismic reinforcement and other
conditions.
F-7.4
mounted onto ceilings, determine the ceiling system type and capacity for lighting,
including plenum height and other factors. Determine whether the ceiling is fire rated.
F-7.5
power sources for lighting.
F-7.6
installed location. For example, lighting in atriums, tall lobbies, and banister lighting can
be very hard to maintain. Determine if the selected design will require a lift or
scaffolding just to replace lights. In cases of poor or limited access, evaluate lighting
quality and luminaire life as part of the design.
F-7.7
Accessibility. Facility users are usually responsible for lamp replacements
at and below 3 meters (10 feet). Evaluate the lighting system design to confirm that
users will be able to periodically replace the installed lamps.
F-8
SELECTING LUMINAIRES.
F-8.1
Light Distribution.
F-8.1.1 Select luminaires to distribute light in a manner appropriate for the
application. The following luminaire distributions should be considered for each
application.
F-8.1.1.1 Direct luminaires emit light downward, and include most types of recessed
lighting, such as downlights and troffers, as well as most types of industrial low and
high-bay luminaires. Most office and retail lighting systems use direct luminaires, which
tend to be more efficient, distributing light directly onto the task area. But direct lighting
F-12
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