Technical Standard

Adjustable-Speed Electrical Power Drive Systems, Part 4: General Requirements – Rating Specifications for AC Power Drive Systems Above 1000 V AC and Not Exceeding 35 kV
standard by National Electrical Manufacturers Association, 01/01/2004

Motors and Generators
standard by National Electrical Manufacturers Association, 12/17/2014

American National Standard for Electric Lamps – Single-Based Fluorescent Lamps – Dimensional and Electrical Characteristics
standard by National Electrical Manufacturers Association,