The nameplate defines a motor’s basic mechanical design, electrical performance and dimensional parameters. The common language of the motor nameplate enables installers, operators and maintenance personnel to understand and recognize the type of motor and that motor’s requirements quickly and easily. One way to ensure the identification of interchangeable motors is through the consistency of nameplate information between manufacturers. To help ensure its standards are properly met and communicated, NEMA requires that motors from different manufacturers meet or exceed minimum performance parameters and, for the most part, be about the same size. To this day, NEMA updates and publishes standards, application guides and technical papers for electrical products and works in advocacy for the industry. In 1926, the National Electrical Manufacturers Association (NEMA) was established to provide a forum for the standardization of electrical equipment, enabling consumers to select from a range of safe, effective and compatible electrical products. The motor industry in North America has worked on a standardized basis since the early part of the 20th century.
