We're often asked for help in identifying the types of power plugs used on lighting fixtures in commercial and industrial facilities. It may seem like there's no rhyme or reason behind these strange power plugs, but they were created to reduce the risk of accidents and to ensure proper power connections for electrical equipment. In this article, we'll discuss the most common NEMA power plugs that are used to connect lighting fixtures to plug-in receptacles. The power plugs we'll discuss here are all covered by the ANSI/NEMA WD-6 standard set by the National Electrical … Continue reading