The National Electrical Manufacturers Association (NEMA) announced that ANSI Accredited Standards Committee C78 reaffirmed ANSI C78.42 High-Pressure Sodium Lamps. This standard sets forth the physical and electrical requirements for HPS lamps, to ensure performance and interchangeability. The data given also provides the basis for the electrical requirements for ballasts and ignitors, as well as the lamp-related requirements for luminaires.