National Electrical Code (NFPA 70)
NEC adoption by state
Which NEC edition each of the 49 jurisdictions enforces: the 48 contiguous states and the District of Columbia. Of the 49 values, 30 come from the state’s own records, verified or partial. The other 19 are tracker leads or have no data yet. Data as of .
Editions in force
| Edition in force | Total | Verified or partial |
|---|---|---|
| 2026 NEC | 9 | 5 |
| 2023 NEC | 19 | 11 |
| 2020 NEC | 11 | 8 |
| 2017 NEC | 2 | 2 |
| 2014 NEC | 1 | 0 |
| 2008 NEC | 1 | 1 |
| Local adoption | 6 | 3 |
Every jurisdiction
| State | Edition in force | In force since | How it was checked |
|---|---|---|---|
| Alabama | 2020 NEC | Verified | |
| Arizona | Local adoption | No date on record | Verified |
| Arkansas | 2026 NEC | Not researched yet | Lead only |
| California | 2023 NEC | Verified | |
| Colorado | 2026 NEC | Verified | |
| Connecticut | 2020 NEC | Verified | |
| Delaware | 2023 NEC | Not researched yet | Lead only |
| District of Columbia | 2014 NEC | Not researched yet | Lead only |
| Florida | 2020 NEC | Verified | |
| Georgia | 2023 NEC | Verified | |
| Idaho | 2023 NEC | Not researched yet | Lead only |
| Illinois | Local adoption | No date on record | Partial |
| Indiana | 2008 NEC | Verified | |
| Iowa | 2023 NEC | Not researched yet | Lead only |
| Kansas | Local adoption | Not researched yet | Lead only |
| Kentucky | 2023 NEC | Verified | |
| Louisiana | 2020 NEC | Verified | |
| Maine | 2026 NEC | Not researched yet | Lead only |
| Maryland | 2017 NEC | No date on record | Partial |
| Massachusetts | 2026 NEC | Verified | |
| Michigan | 2023 NEC | Verified | |
| Minnesota | 2026 NEC | Verified | |
| Mississippi | Local adoption | Not researched yet | Lead only |
| Missouri | Local adoption | No date on record | Partial |
| Montana | 2020 NEC | Not researched yet | Lead only |
| Nebraska | 2023 NEC | Not researched yet | Lead only |
| Nevada | Local adoption | Not researched yet | Lead only |
| New Hampshire | 2023 NEC | Not researched yet | Lead only |
| New Jersey | 2023 NEC | Verified | |
| New Mexico | 2020 NEC | Not researched yet | Lead only |
| New York | 2023 NEC | Partial | |
| North Carolina | 2020 NEC | Verified | |
| North Dakota | 2026 NEC | Not researched yet | Lead only |
| Ohio | 2023 NEC | Partial | |
| Oklahoma | 2023 NEC | Verified | |
| Oregon | 2026 NEC | Verified | |
| Pennsylvania | 2020 NEC | Partial | |
| Rhode Island | 2023 NEC | Not researched yet | Lead only |
| South Carolina | 2020 NEC | Verified | |
| South Dakota | 2023 NEC | Not researched yet | Lead only |
| Tennessee | 2017 NEC | Partial | |
| Texas | 2026 NEC | Verified | |
| Utah | 2023 NEC | Partial | |
| Vermont | 2023 NEC | Not researched yet | Lead only |
| Virginia | 2020 NEC | Verified | |
| Washington | 2023 NEC | Verified | |
| West Virginia | 2020 NEC | Not researched yet | Lead only |
| Wisconsin | 2023 NEC | Verified | |
| Wyoming | 2026 NEC | Not researched yet | Lead only |
A row marked Lead only shows the edition a tracker lists. That is a cross-check, not the state’s own record.
How these values were checked
- Verified22 valuesTwo separate readings of the state’s own record agree, and the passage is on file word for word.
- Partial8 valuesResearched in the state’s own record. The seal stays broken until the passage is on file word for word.
- Lead only19 valuesA tracker lists this edition. Nobody has checked it against the state’s own record yet.