This U.S. industry comprises establishments primarily engaged in manufacturing noncurrent-carrying wiring devices. Illustrative Examples: Boxes, electrical wiring (e.g., junction, outlet, switch), manufacturing Conduits and fittings, electrical, manufacturing Face plates (i.e., outlet or switch covers) manufacturing Transmission pole and line hardware manufacturing
Manufacturing porcelain and ceramic insulators--are classified in Industry 327110, Pottery, Ceramics, and Plumbing Fixture Manufacturing; Manufacturing current-carrying wiring devices--are classified in U.S. Industry 335931, Current-Carrying Wiring Device Manufacturing; and Manufacturing glass insulators--are classified in Industry 32721, Glass and Glass Product Manufacturing.