|
State |
Current Edition Of The NEC In Effect (Effective Date) |
2020 Or 2023 NEC UPDATE Status (Effective Date) |
Other Editions Of NEC Update Status (Effective Date) |
|
2014 (July 1, 2016, (Alabama Division of Construction Management) |
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2020 (4/16/2020) |
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Arizona |
Local adoption only |
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2020 with AR amendments (8/1/2022) |
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2020 with CA amendments (1/1/2023) |
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2020 (7/1/2020) |
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2020 with CT amendments (10/1/2022) |
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2020 (9/1/2021) |
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2017 (12/31/2020) |
2020 update process completed (12/31/2023) |
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2020 with GA amendments (1/1/2021) |
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| Hawaii | 2017 (8/21/2018) |
2020 update process completed (Effective 3/14/2023) | |
| Idaho | 2017 (7/1/2017) |
2020 update process underway |
|
| Illinois | 2008 (7/1/11 - commercial occupancies for areas outside of local jurisdictions that have adoption authority) | ||
| Indiana |
2008 Commercial (8/26/2009) 2017 (2018 IRC) One- and two-family dwellings (12/26/2019) |
2020 update process underway (Effective date not established) | |
| Iowa | 2020 with IA amendments (4/1/2021) | ||
| Kansas | 2008 (2/4/11 - State Fire Marshal) | ||
| Kentucky |
2017 (1/1/2019) | ||
| Louisiana | 2020 with LA amendments (1/1/2023) | ||
| Maine | 2020 with Maine amendments (7/2/2022) | ||
| Maryland | 2017 (2/7/2020) | ||
| Massachusetts | 2020 w/MA amendments (12/27/2019) | 2023 Update process underway (2/28/2023) | |
| Michigan | 2017 Commercial (1/4/2019) One- and two-family dwellings (2/8/2016) |
2020 update process underway (effective date not established) | |
| Minnesota |
2020 (11/17/2020) | 2023 update process underway (Projected 7/1/2023)) | |
| Mississippi | Local adoption only | ||
| Missouri | Local adoption only | ||
| Montana | 2020 (6/11/2022) | ||
| Nebraska |
2017 (8/1/17) |
2020 update process underway |
|
| Nevada | 2011 (7/1/13 - Nevada State Pubic Works Division) | ||
| New Hampshire | 2020 with NH amendments (7/1/2022 with 6-month grace period permitting use of prior adopted edition) | ||
| New Jersey | 2020 with NJ amendments (9/6/2022) | ||
| New Mexico | 2017 (2/1/2018) | 2023 update process underway (Projected 7/1/2024) |
|
| New York | 2017 (5/12/2020) | ||
| North Carolina |
2020 with NC amendments for other than one- and two-family dwellings (11/1/21) | 2023 update process underway (Projected 7/1/2024) | |
| North Dakota |
2020 (1/1/2021) | ||
| Ohio |
2017 2017, with Ohio amendments |
2023 update process underway for commercial/2020 update process underway for one-, two-, and three-family dwellings |
|
| Oklahoma |
2020 NEC with OK amendments for Commercial Electrical Construction (9/14/2022) 2018 IRC for one- and two-family dwellings and townhouses with OK amendments (9/14/2022) |
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| Oregon |
2020 with OR amendments (4/1/2021) |
2023 update process underway (Projected 10/1/2023) | |
| Pennsylvania |
2017 (2/14/2022) |
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| Rhode Island |
2020 (2/1/2022) |
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| South Carolina | 2020 with SC amendments (Effective 1/1/23) | ||
| South Dakota |
2020 (7/1/2020) with SD amendments |
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| Tennessee | 2017 (10/1/2018) |
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| Texas | 2020 (11/1/2020) |
2023 update process underway (Projected 9/1/2023) | |
| Utah |
2020 2014 |
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| Vermont | 2020 with Vermont amendments (4/15/2022) | ||
| Virginia | 2017 (7/1/2021) |
2020 update process underway (Projected 1/1/24) | |
| Washington | 2020 (10/29/2020) | ||
| West Virginia | 2020 with WV amendments (8/1/2022) |
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| Wisconsin | 2017 Commercial (8/1/2018) |
One- and two-family dwellings (1/1/2020) | |
| Wyoming | 2020 (7/1/2020) |
2020 is updated to 2023 edition on 1/1/2023 with effective date of 7/1/2023 | |
| Chicago | 2017 with Chicago amendments (3/1/2018) | ||
| New York City | 2008 w/NYC amendments (7/1/2011) | 2020 (effective date not established) |