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Fluorescent Magnetic T12 Ballast: RIP by Craig DiLouie, Lighting Controls Association

As of July 2010, Federal efficiency standards regulating fluorescent magnetic T12 ballasts entered their final phase, effectively eliminating these ballasts from the market, with few exceptions. Between 2005 and 2010, efficiency standards created by DOE regulations became phased into effect, covering magnetic ballasts designed to operate full-wattage F40T12, F96T12 and F96T12HO lamps. Ballast manufacturers were prohibited from manufacturing even replacement ballasts that did not meet the new standards. http://www.aboutlightingcontrols.org/education/papers/2010/2010_ballast-law.shtml