An industry association which standardizes specifications for wires, cables and electrical components.

This is a trade organisation in the USA who make a significant contribution to the development of industry standards affecting the imaging community. They also develop and promote new technologies ( http://www.nema.org/).

This group has defined several categories of enclosures, usually referred to as “types.” Further, they designate certain features and capabilities each type must include. For example, among other features, a NEMA 4 enclosure must include a threaded conduit connector, external mounting provision and cover gaskets. When selecting a NEMA 4 enclosure from any manufacturer, a buyer is assured of receiving these features.