What's the NAICS code for electrical work?
Electrical work is 238210, Electrical Contractors and Other Wiring Installation Contractors. The Census index lists electricians, wiring, lighting, network cabling, solar panels and security camera installation there. If you sell, install and monitor alarm systems, that's 561621. Repairing generators and other electrical equipment is 811310.
The codes, side by side
| Code | What the Census index lists | Small business size limit | New federal contracts and orders, FY2026 | Of those, under $250,000 |
|---|---|---|---|---|
| 238210 Electrical Contractors and Other Wiring Installation Contractors | Electrical contractors, electrician, lighting system installation, surveillance system installation only | $19.0 million | 1,469 | 1,204 |
| 561621 Security Systems Services (except Locksmiths) | Security alarm systems sales combined with installation, repair, or monitoring services | $25.0 million | 1,226 | 1,038 |
| 811310 Commercial and Industrial Machinery and Equipment Repair and Maintenance | Electrical generating and transmission equipment repair and maintenance services | $12.5 million | 2,722 | 2,481 |
Size limits are average annual revenue over the last five years, from the SBA table. Contract counts are from USAspending.gov, October 2025 to September 2026.
Generator work shows how codes overlap. In FY2026, 217 new 811310 contracts and orders mentioned generators, against 93 under 238210.
Other codes worth listing
- 238220 Plumbing, Heating, and Air-Conditioning Contractors ($19.0 million): if you also do HVAC or plumbing.
- 561210 Facilities Support Services ($47.0 million): electrical upkeep in a whole-facility contract.
- 236220 Commercial and Institutional Building Construction ($45.0 million): electrical work bought as part of a building project.
Agencies don't always code the same work the same way, so listing every code that fits gets more bids in front of you. Our guide to which NAICS codes to list explains how.
Common questions
What is the NAICS code for electricians?
238210, Electrical Contractors and Other Wiring Installation Contractors. Its size limit is $19.0 million in average annual revenue.
What NAICS code is security camera installation?
238210 if you only install the system. If you sell and install it, or monitor it afterward, it's 561621, Security Systems Services.
See the open bids under these codes
Get a free bid-match report: open federal bids that fit your work and area, ranked by fit, with deadlines and what to watch for. It usually arrives within two business days.
Sources
- Census Bureau: 2022 NAICS index
- 13 CFR 121.201: SBA size standards
- USAspending.gov: contract awards, FY2026 (pulled Nov 2, 2026)
How we get our numbers: our sources and methods.