NAICS 335932

Overview

The North American Industry Classification System (NAICS) is the federal standard for classifying business establishments to support comparable economic statistics across the U.S., Canada, and Mexico. It is maintained by the U.S. Office of Management and Budget in coordination with partner countries and is periodically revised; the current version is NAICS 2022. ⁴

NAICS 335932 — Noncurrent-Carrying Wiring Device Manufacturing — covers establishments primarily engaged in making wiring devices that do not carry electric current. Official examples include electrical junction/outlet/switch boxes, electrical conduit and fittings, outlet/switch face plates, and transmission pole and line hardware. Agencies and statistical programs use this code to tabulate manufacturing activity for these specific products. ²

See also on G2X:

• G2X — NAICS 335932 overview
• G2X — NAICS 335931 overview
• G2X — PSC 5975 Electrical Hardware and Supplies

What this NAICS covers

• Manufacturing electrical junction, outlet, and switch boxes. ²
• Manufacturing electrical conduit and associated fittings. ²
• Manufacturing outlet and switch face plates (device covers). ²
• Manufacturing transmission pole and line hardware. ²
• Manufacturing other noncurrent-carrying wiring devices used in building or utility electrical systems. ²

Related NAICS and PSC codes

Cross-references and official exclusions

• Current-carrying wiring devices (e.g., receptacles, switches, GFCIs) are classified in 335931, not 335932. ²
• Porcelain/ceramic insulators are classified in 327113; glass insulators are classified in 32721. ²
• Sector-wide adoption of the 2022 NAICS vintage is ongoing across Census economic programs; publication schedules reflect the transition to 2022 codes. ⁴

Frequently asked questions

• What products are included in 335932? Official examples are electrical boxes (junction, outlet, switch), electrical conduit and fittings, outlet/switch face plates, and transmission pole/line hardware. These are noncurrent-carrying components used to route or protect wiring rather than conduct current. ²

• How does 335932 differ from 335931? 335932 covers noncurrent-carrying devices (e.g., boxes, conduit, covers). 335931 covers current-carrying devices (e.g., receptacles, switches, GFCIs, lamp holders). Classification hinges on whether the device conducts electrical current. ²

• Where are insulators classified if made from porcelain or glass? Porcelain/ceramic electrical insulators fall under 327113; glass insulators fall under 32721. These items are explicitly excluded from 335932. ²

• Which PSCs most often align to noncurrent-carrying wiring devices? PSC 5975 “Electrical Hardware and Supplies” includes conduit, raceways, face plates, condulets, outlet/junction boxes, and pole line hardware, aligning closely with products in 335932. ³

• What is the status of the 2022 NAICS vintage for manufacturing statistics? Census began disseminating detailed industry statistics on the 2022 NAICS basis with 2024 releases (covering 2022 reference year) and plans full program adoption by the end of calendar year 2027. ⁴

Useful resources

• G2X — NAICS 335932 overview
• U.S. Census: NAICS manual definition and background (OMB adoption; system purpose). ¹
• U.S. Census: Official definition, examples, and cross-references for NAICS 335932. ²
• Acquisition.gov: PSC Manual (April 2025) — definitions for PSC product classes, including 5975. ³
• U.S. Census: 2022 NAICS implementation timeline and adoption across programs. ⁴

References

1. U.S. Census Bureau. 2017 North American Industry Classification System (NAICS) Manual — Overview/definition. https://www.census.gov/library/publications/2017/econ/2017-naics-manual.html
2. U.S. Census Bureau. NAICS 335932 — Noncurrent-Carrying Wiring Device Manufacturing (2022). https://www.census.gov/naics/?input=335932&year=2022&details=335932
3. General Services Administration. Product and Service Code (PSC) Manual, April 2025 — Class 5975 description. https://www.acquisition.gov/psc-manual/all
4. U.S. Census Bureau. The Census Bureau’s Implementation of the 2022 NAICS (timeline, adoption status). https://www.census.gov/library/reference/code-lists/naics/2022/implementation-timeline.html