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Outlet and Switch Box

Outlet and switch boxes contain wire, taps, splices, or devices in an electrical wiring system. A box may have openings for the entry of conduit, tubing, or cable assemblies, as well as for a cover, which closes the box or provides support for devices or fixtures.

Metallic, nonmetallic, and composite electrical boxes are used in applications of 1,000 volts AC and 1,200 volts DC or less. Products include boxes that are 100 cubic inches or smaller, box covers, multiple gang device boxes greater than 100 cubic inches, floor boxes, specialty boxes, utility boxes, bar hangers, extension rings, and box accessories.

NEMA Members develop domestic and international Standards that aid in market development of outlet and switch boxes.


  • Develops and maintains NEMA Standards, other technical documents, and training modules for outlet boxes
  • Provides code development and monitoring services for the National Electrical Code® (NEC) as well as other local and national codes
  • Participates in NEMA activities with CANENA (the Council for Harmonization of Electrotechnical Standards of the Nations in the Americas) to harmonize Standards between Canada, Mexico, and the United States


  • Commercial
  • Construction
  • Retail

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