INCENTIVE APPLICATION FOR PROJECTS COMPLETED BY 12/31/2023 GLOSSARY
Acronyms, abbreviations and technical terms used throughout this catalog are defined below.
ACRONYMS AND ABBREVIATIONS
1x4 2x2 2x4
One foot by four feet in dimension (nominal) Two feet by two feet in dimension (nominal) Two feet by four feet in dimension (nominal) Standard incandescent lamp shape American National Standards Institute
IESNA
Illuminating Engineering Society of North America
kW
Kilowatts
kWh LED
Kilowatt-hours
A-Lamp
Light emitting diode
ANSI
lm
Lumen(s)
BF
Ballast factor
lm/W NEC
Lumens per Watt
BR Lamp
Bulged reflector lamp
National Electric Code
CCT CEE CFL CMH CRI DLC DOE
Correlated color temperature Consortium for Energy Efficiency
MH MV
Metal halide
Mercury vapor PAR Lamp Parabolic aluminized reflector lamp PSMH Pulse-start metal halide QPL Qualified products list R Lamp Reflector lamp RWT8
Compact fluorescent lamp Ceramic metal halide Color Rendering Index DesignLights Consortium® U.S. Department of Energy
Reduced wattage 1" diameter fluorescent lamp
ES
ENERGY STAR®
SDS SSL
Supplemental data sheet
G Lamp
Globe-shaped light bulb, generally for exposed use High-intensity discharge. Includes: HPS, MH, CMH, PSMH, and mercury vapor
Solid-state lighting
HID
T5 T8
5 / 8 " diameter tubular lamp 1" diameter tubular lamp 1½" diameter tubular lamp
HO
High output
T12
HPS
High-pressure sodium
VHO
Very high output
HPT8
High performance 1" diameter fluorescent lamp
W
Watt(s) demand for electricity and natural gas
GLOSSARY TERMS
A Lamp Standard incandescent lamp shape, typically with an omnidirectional distribution of light. Average Rated Life An average rating, in hours, indicating end of useful life. For most lamps, this indicates when 50% of a large group of lamps will have failed, when operated at nominal lamp voltage and current. For LED, this would be the point at which the light system has depreciated to an unacceptable level and needs to be replaced, often when it has dropped to 70% of initial light output. Ballast An electrical control device that initiates the light arc in fluorescent and HID lights with high starting voltage and regulates the operation of the lamp.
Ballast Factor (BF) The ratio of the light output of a fluorescent lamp or lamps operated on a ballast to the light output of the lamp(s) operated on a standard (reference) ballast. BF depends on both the ballast and the lamp type; a single ballast can have several ballast factors depending on lamp type. Rated Lamp Lumens x BF = Net Lumen output for the system. Also referred to as relative light output. Typically grouped into Low (≤0.85), Normal (>0.85 to ≤1.0) and High (≥1.01) light output categories. Bi-Level Control Device that controls light source intensity at two discrete levels in addition to off. Bollards Lights mounted on short, heavy piers or posts. They are used mostly for larger residences and campus settings.
Bulged Reflector Lamp (BR Lamp) Flood style lamp with wide, diffuse beam. Often used in downlights for general lighting. Canopy Lighting Recessed or surface-mounted lighting on the underside of a covered drive through, covered walkway, or covered gasoline pumping station. Color Rendering Index (CRI) A rating index commonly used to represent how well a light source renders the colors of objects that it illuminates. The maximum value of 100 indicates that the colors of objects can be expected to be seen as they would appear under an incandescent or natural daylight. Sources with CRI values less than 50 are generally regarded as rendering colors poorly.
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