from Beau in Keshena, WI:
#391
Do high-efficiency T8 fluorescent lamps (the ones with the green ends) still function as high-efficiency lamps when used with standard universal-voltage electronic ballasts?
Consult your contractor.
The T8 fluorescent lamps with green ends are a trade-specific product and the green does not indicate energy efficiency; rather, it is an indicator of lower mercury content. The ballast determines the percentage of light output that will be produced by the lamp and directly affects energy usage. The ballast manufacturer will have information published showing these values. Consult your contractor to verify if the ballast you are referring to is rated to work with your lamp. Focus on Energy recommends high-performance T8 lamp and ballast systems for higher efficiency and energy savings. Please see the Focus on Energy Web site for a list of qualified products and more information.
Published Tuesday, December 15, 2009