Throughout the United States and around the world, NFPA 70®, National Electrical Code® (NEC®), published by the National Fire Protection Association (NFPA), sets the foundation for electrical safety in residential, commercial, and industrial occupancies. Learn more about enforcement efforts, status, and the support of the
Electrical Code Coalition, which works to increase focus and emphasis on electrical safety for persons and property through direct and full adoption, application and uniform enforcement of the latest edition of the
NEC.
Where is the National Electrical Code® in effect?
CodeFinder™: Insight you need on NFPA codes and standards.
As of July 1, 2023, the 2020 NEC is in effect in twenty-seven states, the 2017 NEC is in effect in twelve, the 2014 NEC is in effect in one states and the 2008 NEC is in effect in two states. If you have a question on the status of NEC enforcement in any state, please contact Jeff Sargent.
Note: The 2020 edition of the NEC was issued by the NFPA Standards Council on August 5, 2019. The effective date was August 25, 2019, when it officially became available for federal, state, county, and municipal governmental entities to update their electrical installation regulations.
The National Electrical Code® process in progress
As of July 1, 2023, four states have completed their 2023 NEC update process. Eight states currently using the 2020 NEC and five using the 2017 NEC have commenced the process of revising the statute or administrative rule through which the NEC is updated to reference the 2023 edition, Two states currently using the 2017 NEC are in the process of updating to the 2020 NEC and one state currently using the 2008 NEC is in the process of updating to the 2020 edition. Two states are using the 2014 or 2008 of the NEC and are not in the process of updating the edition currently in use. To determine the current edition of the NEC being used in a state, see the NEC in effect map.
Note: The 2023 edition of the NEC was issued by the NFPA Standards Council on August 12, 2022. The effective date of September 1, 2022 is when it officially became available for federal, state, county, and municipal governmental entities to update their electrical installation regulations.
The following table shows the edition of the NEC in effect in those states having a statewide regulation that impacts construction, trade licensing, or both. Follow the link to the board or agency responsible for updating the NEC.
| 2011 (Effective date not established) |
| Texas |
2014 (9/1/2014) |
Adoption process underway (9/1/17) |
|
Alabama
|
2014 (July 1, 2016, (Alabama Division of Construction Management)
|
|
|
|
Alaska
|
2020 (4/16/2020)
|
|
|
|
Arizona
|
Local adoption only
|
|
|
|
Arkansas
|
2020 with AR amendments (8/1/2022)
|
|
|
|
California
|
2020 with CA amendments (1/1/2023)
|
|
|
|
Colorado
|
2023 (7/1/2023)
|
|
|
|
Connecticut
|
2020 with CT amendments (10/1/2022)
|
|
|
|
Delaware
|
2020 (9/1/2021)
|
|
|
|
Florida
|
2017 (12/31/2020)
|
2020 update process completed (12/31/2023)
|
|
|
Georgia
|
2020 with GA amendments (1/1/2021)
|
2023 update process underway (Projected 1/1/2025) |
|
Hawaii
|
2020 (3/14/2023)
|
|
|
Idaho
|
2023 (7/1/2023) with ID amendments (temporary rules permit use of 2017 NEC with ID amendments)
|
|
|
| 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) |
2023 update process underway (projected 1/1/2024) |
|
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 |
2023 with MA amendments (2/17/2023) |
|
|
| Michigan |
2017
Commercial (1/4/2019)
One- and two-family dwellings (2/8/2016) |
2023 update process underway (effective date not established) |
|
Minnesota
|
2023 (7/1/2023)
|
|
|
Mississippi
|
Local adoption only |
|
|
Missouri
|
Local adoption only
|
|
|
Montana
|
2020 (6/11/2022)
|
|
|
Nebraska
|
2017 (8/1/17)
|
|
|
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
|
2020 (3/28/2023) |
|
|
| New York |
2017 (5/12/2020)
|
2023 update process underway (Effective date not established) |
|
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) |
2023 update process underway (effective date not established) |
|
Ohio
|
2017
Commercial (11/1/2017)
2017, with Ohio amendments
One-, two- and three-family dwellings (7/1/2019)
|
2023 update process underway for commercial & one-, two-, and three-family dwellings
(Effective date projected first quarter of 2024)
|
|
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)
|
|
|
Oregon
|
2020 with OR amendments (4/1/2021)
|
2023 update process underway (Projected 10/1/2023) |
|
Pennsylvania
|
2017 (2/14/2022)
|
|
|
Rhode Island
|
2020 (2/1/2022)
|
|
|
South Carolina
|
2020 with SC amendments (Effective 1/1/23)
|
|
|
South Dakota
|
2020 (7/1/2020) with SD amendments
|
|
|
Tennessee
|
2017 (10/1/2018)
|
|
|
Texas
|
2020 (11/1/2020)
|
2023 update process underway (Projected 9/1/2023) |
|
Utah
|
2020
Commercial (7/1/2021)
2014
One- and two-family dwellings (7/1/2016)
|
|
|
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)
|
|
|
Wisconsin
|
2017
Commercial (8/1/2018)
|
|
One- and two-family dwellings (1/1/2020) |
Wyoming
|
2023 (7/1/2023)
|
|
|
| Chicago |
2017 with Chicago amendments (3/1/2018) |
|
|
| 2011 (Effective date not established) |
| Texas |
2014 (9/1/2014) |
Adoption process underway (9/1/17) |