Product Definition
"Fluorescent lamp ballasts" mean devices that are used to start and operate fluorescent lamps by providing starting voltages and current and by limiting the current during normal operation. Fluorescent lamp ballasts shall not include devices capable of being dimmed to 50 percent or less of their maximum output, and devices designed for operation at ambient temperatures of -20 degrees Fahrenheit or less.
Minimum Standard
For replacement T8 fluorescent lamp ballasts powering 32 watt or 59 watt lamps that are designed to operate at nominal input of 120 or 277 volts and have input current frequencies of 60 Hertz, the minimum energy efficiency standards shall be the minimum ballast efficacy factors set forth in the table below determined in accordance with the test procedures set forth in 10 Code of Federal Regulations (CFR) Part 430, Subpart B, Appendix Q [(last amended April 24, 1991)] (see section 506.6 of the Part). For fluorescent lamp ballasts in new construction, no T12 ballast shall be purchased and the minimum energy efficiency standards for T8 ballasts powering 32 watt or 59 watt lamps that are designed to operate at nominal input of 120 or 277 volts and have input current frequencies of 60 Hertz shall be the ballast efficacy factors set forth in Table 5.1 determined in accordance with the test procedures set forth in 10 Code of Federal Regulations (CFR) Part 430, Subpart B, Appendix Q [(last amended April 24, 1991)] (see section 506.6 of this Part).
Minimum Energy Efficient Standards:
Ballast Efficacy Factorsa for T8 Fluorescent Lamp Ballasts |
Ballast Type |
Type and Number of Lamps |
F32T8 (32 Watt) |
F96T8 (59 Watt) |
1 Lamp |
2 Lamp |
3 Lamp |
4 Lamp |
2 Lamp |
Rapid Start |
2.61 |
1.41 |
0.96 |
0.72 |
NA |
Instant Start |
2.84 |
1.49 |
1.04 |
0.79 |
0.79 |
A Ballast Efficacy Factor (“BEF”) means the ratio of the ballast factor to input watts; it identifies the efficacy of a lamp/ballast system in comparison to other systems using the same type and number of lamps. Ballast factor means the ratio of the light output of a lamp(s) operated by a ballast, to the light output of the same lamp(s) operated by a reference ballast at rated current and voltage.
Beyond State Equipment Standards
Consortium for Energy Efficiency
High-Performance Commercial Lighting
Federal Energy Management Program
How to Buy an Energy-Efficient Fluorescent Ballast
Qualified Product Listings
Consortium for Energy Efficiency (CEE)
High-Performance Commercial Lighting System
National Electrical Manufacturers Association
Ballasts Product Section and Manufacturers
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