Technical Information
T e c h n i c a l i n f o r m at i o n
Floodlighting concepts
Regardless of light source there are
industry standards on beam spreads.
Outdoor Floodlight Luminaire Designations
Field Angle (Degrees)
NEMA Type
10 up to 18
1
> 18 up to 29
2
> 29 up to 46
3
> 46 up to 70
4
> 70 up to 100
5
> 100 up to 130
6
> 130
7
Typically, “NEMA” beam spreads are described both horizontally and vertically, i.e. 7H x 6V. If
only one NEMA number is given, the beam is considered to be symmetrical.
The following general principles apply in the choice of beam spread:
1. The greater the distance from the floodlight to the area to be lighted, the narrower the beam
spread desired.
2. By definition, the “Field Angle” is used to determine the NEMA type. It is equal to the number
of degrees between the 10% of maximum candlepower (near the center of the beam) locations.
Since the 10% locations are generally near the edge of a floodlight’s beam, the illumination at
the edge is 1/10 or less of that at the beam center. To obtain reasonable uniformity, the beams
of individual floodlights must overlap each other as well as the edge of the surface to be lighted.
3. The percentage of beam lumens falling outside the area to be lighted is usually lower with narrowbeam units than wide-beam units. Thus narrow-beam floodlights are preferable where they will
provide the necessary degree of uniformity of illumination and the proper footcandle level.
HubbellGard® Fasteners
Hubbell Lighting has addressed a long-standing problem caused by the use of
stainless steel fasteners in cast aluminum fixtures. This common and often
specified practice can create a variety of unfavorable results. Galvanic or
dissimilar material corrosion leads to paint blistering and cracking around the
contact area. Unsightly “white dust” can develop around the edges of the
contact area. After a period of time the screw starts to bond to the casting,
making removal for maintenance difficult or impossible.
The HubbellGard® coating is applied over steel screws, typically 25%
stronger than stainless steel, which prevents the aluminum from
“sensing” the presence of the steel. The results are as follows:
• Prevents fastener corrosion which allows easy servicing and
eliminates fastener “freeze-up”.
• Resists over 70 corrosive agents commonly found in industrial,
coastal, agricultural and commercial environments.
• Provides a hard surface that resists abrasion and scuffing typically
encountered during fixture manufacturing and installation.
• Harder, stronger hardware for better seals and longer life; prevents
screw heads breaking and allows easier service.
• Maintains fixture appearance by preventing “white dust”, blistering,
cracking and peeling paint finish.
• Maintains aiming of fixtures, eliminating corrosion induced drifting.
A superior product – HubbellGard® fasteners - they out perform stainless
steel when used with cast aluminum materials.
Wallpack Lighting Distributions
Wallpack distribution is generally determined by the lamp orientation.
Whether compact, low wattage or full size 150-400 watt units, these
typical distributions apply. Even refractor vs. shielded or cut-off units
will follow the lamp position to output.
The layout below shows typical distributions and their coverage. One
cannot be said to be superior to the other until the lighting task is
known. Then, by selecting the correct product, greater distribution
utilization can be gained and a better lighting job will result.
The key is vertical vs. horizontal lamp position. Vertical lamps provide
access to the entire arc tube of the lamp to the sides and therefore can
produce a wider lateral spread. This can be enhanced with prisms in
refractor units or internal reflectors in shielded or cut-off units.
The surrounding environment
will direct the selection of REFRACTOR
refractor, shielded, cut-off (vertical
lamp)
or full cut-off units. The
choice of polycarbonate fixtures
SHIELDED (horizontal lamp)
or shields vs. glass may also be
MOUNTING HEIGHTS
determined by the application location.
With horizontal positioned lamps, only the tip of the arc tube is seen on
one side and the socket blocks light on the other. The result is shorter
lateral spread but the capability of a greater forward throw of light.
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MOUNTING
HEIGHTS
1
2
2
3
Technical Information
The Lektrocote® Finish Process
®
What makes a Lektrocote painted product superior? Our proprietary TGIC thermosetting, acid-functional polyester powder resin is
electrostatically applied only after a thorough cleaning process. All
contaminants and impurities are removed from the surface by one of
two methods:
1. Luminaires receive a five-step wash with both acid and alkaline
based liquid cleaners followed by the deposit of a thin layer of a
proprietary corrosion resistant compound to promote maximum corrosion
resistance and paint adhesion. Finally the decorative finish coat is applied.
t e c h n i c a l i n f o r m at i o n
Hubbell and Spaulding have long been known for manufacturing
lighting fixtures and poles which exhibit excellent exterior durability.
Central to this success is our Lektrocote® paint and finishing process.
Lektrocote® is our designation for those finishes which incorporate
the paint and surface pre-treatment noted above.
Lektrocote® meets or exceeds the following standards:
• Exterior Durability - up to 5 years Florida exposure with 10% or
less gloss reduction.
• ASTM B-117 - 1000 hour salt spray test
• ASTM D-2247 - 1000 hour humidity test
• ASTM D-2794 - Impact test resistant to 160 inch pounds
• ASTM D-522 - Flexibility test
• ASTM 3359B - Adhesion test
2. Poles are cleaned and prepared by blasting the surface to a “white
metal” state. Once free of all impurities, the surface is ready to
accept an application of zinc-rich powder paint primer and the
decorative finish coat.
Color Selections
Due to printing process, a slight color variation between color swatch and actual finish is possible.
STANDARD COLORS
Dark Bronze
(textured finish)
PREMIUM COLORS
Black
White
Gray
(textured finish) (textured finish) (textured finish)
Platinum Silver
(smooth finish)
Red
(smooth finish)
Forest Green
(textured finish)
CUSTOM COLORS Custom colors are available. Consult factory for quote. RAL number preferable.
Ida Compliant
Hubbell Outdoor and Spaulding brands are aware of the growing concern over glare, light trespass and sky
glow created by improperly applied lighting fixtures. This wasted light is wasted energy. To address this
concern, we have designed many of our new products with Full Cut-off (zero uplight) optics to provide
greater control of light output from area and wall mounted fixtures.
Hubbell Outdoor and Spaulding fixtures that meet Full Cut-off criteria are designated with the IDA logo.
These fixture series or specific lens options will solve your need for excellent site lighting with an
environmentally friendly reduced sky glow.
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