Which National Electrical Code edition each US state enforces: adoption status, effective dates and amendments, from the state boards themselves
The NEC edition currently in force in each US state, with the effective date, the adopting authority, whether state amendments apply, and any announced transition to a newer edition. The spread is real and moving: Minnesota has adopted the 2026 NEC effective Aug. 17, 2026 (permits filed before that date follow the 2023 NEC); Oregon's 2023 Oregon Electrical Specialty Code, based on the 2023 NEC, took effect Oct. 1, 2023 with a published table of amendments; other states remain on the 2020 or 2017 editions, and several have no statewide adoption at all, leaving it to local jurisdictions. Answers 'which NEC edition is in effect in my state?', 'which states have adopted the 2026 NEC?', 'does my state amend the NEC or adopt it unamended?', 'when does the new electrical code take effect for permits?'
The data
| State | Adopting authority | Announced transition | Statute / rule citation | NEC edition in force | Effective date | State amendments |
|---|---|---|---|---|---|---|
| Colorado | State Electrical Board | the Colorado Electrical Board held a Rulemaking Hearing on May 27, 2026, on proposed revisions to Rule 1.5 – INCORPORATION BY REFERENCE, for the purpose of adopting the current 2026 National Electrical Code (NEC) | Rule 1.5 – INCORPORATION BY REFERENCE | |||
| Minnesota | Board of Electricity | the Board of Electricity has adopted the 2026 National Electrical Code (NEC) with an effective date of Aug. 17, 2026; permits filed on or after Aug. 17, 2026, must comply with the 2026 NEC; licensing exams transition beginning Sept. 8, 2026 | Chapter 1315 of the Minnesota State Building Code | 2023 NEC | ||
| Oregon | Building Codes Division | 2023 Oregon Electrical Specialty Code (OESC) | 2023 National Electrical Code (NEC) | Oct. 1, 2023 | adopted with amendments — Table of amendments to the 2023 NEC published; the table of amendments is designed to be used with the 2023 NEC | |
| Washington | Effective December 31, 2026, the 2026 edition of the National Electrical Code (NFPA 70-2026) including Annex A, B, and C is adopted in this chapter by reference and replaces the 2023 edition of the NFPA 70 | WAC 296-46B-010 | The 2023 edition of the National Electrical Code (NFPA 70 - 2023) | adopted with state rules taking precedence — 'This chapter will be followed where there is any conflict between this chapter and the above adopted standards.' |
Where this came from
Every record above links the page it was taken from and quotes the sentence that states it. These are the 5 sources this dataset was assembled from.
- dpo.colorado.govhttps://dpo.colorado.gov/Electrical
- dli.mn.govhttps://www.dli.mn.gov/business/electrical-contractors/electrical-codes-and-standards
- oregon.govhttps://www.oregon.gov/bcd/codes-stand/Pages/oesc-adoption.aspx
- oregon.govhttps://www.oregon.gov/bcd/codes-stand/Pages/electrical.aspx
- app.leg.wa.govhttps://app.leg.wa.gov/wac/default.aspx?cite=296-46B-010
Machine-readable
- data.jsonThe whole dataset — every record with its source URL and source quote.
- Open Knowledge Format bundleOne JSON object per line — every record's frontmatter and quoted span exactly as it is held here, in one fetch.
- How this is made and checkedWhat "verified against source" does and does not mean.