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Photoluminescent signs can now be
listed according to UL 924, The Standard for Emergency Lighting
and Power Equipment. These products are included in the category (FWBX)
Self Luminous and Photoluminescent Exit Signs.
The photo luminescent signs are rated by standards. The standard
grade and the UL 924 standards give information on a glow rating
called lux. Both the standard grade and the UL grade product begin
to degrade within the first hour. The standard glow will last
approximately 8 hours before the human eye can no longer see any
glow from the material. The UL product will show a higher glow or
lux for a longer initial period of time and will no longer be
perceptible at approximately 28 hours. These are ranges and should
not be construed as absolutes do to various conditions of light
and application. The standards rate the material versus a set of
criteria and do not give
hours of glow.
One of the best features of photoluminescent signs is they do not
directly use electricity; but the charging luminaire that is
required will use electricity. Most installations of
photoluminescent exit signs rely on already existing luminaires so
that the electricity is not an additional load for the facility.
But, one must consider the typical sixty minutes charging time
required for these signs.
The United States Department of Energy manages an energy
efficiency program called Energy Star. Many different products,
such as computers, household appliances and emergency exit signs,
can be labeled as energy star compliant if the product meets the
requirements of the program. Emergency exit signs must use less
than five watts per face to meet the existing Energy Star
requirements.
General Product
Characteristics & Features
· Solid Injection Molded
· Polypropylene Material
· Non-toxic, non-radioactive, non-electric, explosion
proof
· No external power source or wiring required
· Improved product liability
· Zero Profile - Graphics permanently fused to
substrate
· Available Sizes: 7"x10" & 10"x14"
· Color: Red & Green
· Heavy Duty .080 Thickness
· Will Not Rust
· Frameless
· Lower end photoluminescent sign glows for 24 hours on
average.
Applicable Standards, Related References, & General Information
1. Standard Glow Exit Signs
· These signs glow for several hours and recharge in
minutes of exposure to natural or artificial light.
· These signs are designed to meet or exceed OSHA
standards, but ARE NOT designed to meet or exceed most fire codes
and Photoluminescent Standards.
2. Photoluminescent Exit Signs
· Photoluminescent products start glowing bright and
decay overtime. The human eye (dark adapted) can see the glow down
to approximately 0.3 milicandelas
per square meter (mcd/m2).
· ANSI/OSHA – Occupational Safety and Health
Administration – Standard 29 CFR 1910.36 – 38, statutory
requirements associated with health and safety.
Regulation for letter height and stroke
width.
· NFPA 101 – Life Safety Code.
· NFPA 5000 – NFPA Building Construction and Safety
Code.
· UL 924 – Standard for Emergency Lighting and Power
Equipment.
To order
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