2022 NAICS national industry in sector 31-33 Manufacturing
335931 Current-Carrying Wiring Device Manufacturing
NAICS 335931 is the US industry code for current-carrying wiring device manufacturing. This U.S.
- Code
- 335931 (2022 NAICS)
- Title
- Current-Carrying Wiring Device Manufacturing
- Part of
- Wiring Device Manufacturing
- SBA small business limit
- Up to 600 employees
- Closest UK SIC
- 27330 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
This U.S. industry comprises establishments primarily engaged in manufacturing current-carrying wiring devices.
Examples Census gives
- Bus bars, electrical conductors (except switchgear-type), manufacturing
- GFCI (ground fault circuit interrupters) manufacturing
- Lamp holders manufacturing
- Lightning arrestors and coils manufacturing
- Receptacles (i.e., outlets), electrical, manufacturing
- Switches for electrical wiring (e.g., pressure, pushbutton, snap, tumbler) manufacturing
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing electronic component-type connectors are classified in U.S. Industry 334417, Electronic Connector Manufacturing.
- Manufacturing noncurrent-carrying wiring devices are classified in U.S. Industry 335932, Noncurrent-Carrying Wiring Device Manufacturing.
- Manufacturing electronic component-type sockets and switches are classified in U.S. Industry 334419, Other Electronic Component Manufacturing.
Activities listed under 335931
The Census index assigns these 39 activities to this code. If your business matches one, this is your code.
- Arrestors and coils, lighting, manufacturing
- Automotive electrical switches manufacturing
- Bus bars, electrical conductors (except switchgear-type), manufacturing
- Caps and plugs, attachment, electric, manufacturing
- Conductor connectors, solderless connectors, sleeves, or soldering lugs, manufacturing
- Connectors and terminals for electrical devices manufacturing
- Connectors, electric cord, manufacturing
- Connectors, solderless (wiring devices), manufacturing
- Connectors, twist on wire (i.e., nuts), manufacturing
- Contacts, electrical (except carbon and graphite), manufacturing
- Convenience outlets, electric, manufacturing
- Cord connectors, electric, manufacturing
- Current taps, attachment plug and screw shell types, manufacturing
- Cutouts, switch and fuse, manufacturing
- Dimmer switches, outlet box mounting-type, manufacturing
- Duplex receptacles, electrical, manufacturing
- Fuse cutouts manufacturing
- GFCI (ground fault circuit interrupters) manufacturing
- Ground clamps (i.e., electric wiring devices) manufacturing
- Ground fault circuit interrupters (GFCI) manufacturing
- Lamp holders manufacturing
- Lamp sockets and receptacles (i.e., electric wiring devices) manufacturing
- Lightning arrestors and coils manufacturing
- Lightning protection equipment manufacturing
- Lugs and connectors, electrical, manufacturing
- Outlets (i.e., receptacles), electrical, manufacturing
- Outlets, convenience, electrical, manufacturing
- Plugs, electric cord, manufacturing
- Rail bonds, propulsion and signal circuit electric, manufacturing
- Receptacles (i.e., outlets), electrical, manufacturing
- Rheostats (i.e., dimmer switches), current-carrying wiring device, manufacturing
- Snap switches (i.e., electric wiring devices) manufacturing
- Sockets, electric, manufacturing
- Solderless connectors (electric wiring devices) manufacturing
- Switch cutouts manufacturing
- Switches for electrical wiring (e.g., pressure, pushbutton, snap, tumbler) manufacturing
- Switches, outlet box mounting-type, manufacturing
- Taps, current, attachment plug and screw shell types, manufacturing
- Terminals and connectors for electrical devices manufacturing
SBA size standard for 335931
To count as a small business for SBA loans and federal contracts under NAICS 335931, your business (including affiliates) must not exceed 600 employees. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 2733), so treat them as a starting point and check the definition.
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
Data last changed November 14, 2026. How this page is built.