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NEMA Publishes ANSI C78.901-2014

American National Standard for Electric Lamps—Single-Based Fluorescent Lamps—Dimensional and Electrical Characteristics This standard sets forth the physical and electrical characteristics required to assure the interchangeability and to assist in the proper application of single-based fluorescent lamps. This revision includes data sheets, for high frequency lamps, that contain information for dimming ballast design, effective January 1, 2015. It also incorporates changes to clauses regarding ballast and luminaire design.   ANSI C78.901-2014 may be purchased for $240 in electronic or hard copy format on the NEMA website.