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?
NEW! CodeFinder™: Insight you need on NFPA codes and standards.
As of June 1, 2021, the 2020 NEC is in effect in eleven states, the 2017 NEC is in effect in twenty-five, the 2014 NEC is in effect in eight 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 June 1, 2021, eleven states have completed their 2020 NEC update process. Eleven states currently using the 2017 NEC have commenced the process of revising the statute or administrative rule through which the NEC is updated to reference the 2020 edition. Seven states are in the process of revising the statute or administrative rule through which the NEC is updated to reference the 2017 edition. Six states are using the 2014, 2011 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.
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
|
2017 (5/9/2018)
|
|
|
|
Arizona
|
Local adoption only
|
|
|
|
Arkansas
|
2017 with AR amendments (1/1/2018)
|
|
|
|
California
|
2017 with CA amendments (1/1/2020)
|
|
|
|
Colorado
|
2020 (7/1/2020)
|
|
|
|
Connecticut
|
2017 (10/1/2018)
|
Update process underway
(Effective date not established)
|
|
|
Delaware
|
2014 (3/11/2016)
|
|
Update process (2017) underway
(Effective date not established)
|
|
Florida
|
2017 (12/31/2020)
|
|
|
|
Georgia
|
2020 (1/1/2021)
|
|
|
Hawaii
|
2017 (8/21/2018)
|
|
|
Idaho
|
2017 (7/1/2017)
|
Update process underway
(7/1/2021)
|
|
| Illinois |
2008 (7/1/11 - commercial occupancies for areas outside of local jurisdictions that have adoption authority)
|
|
|
Indiana
|
2008
|
|
Update process (2017) 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 |
2014 (2/1/2018)
|
|
|
Maine
|
2017 with Maine amendments (11/6/2017) |
Update process underway
(Effective date not established) |
|
| Maryland |
2014 (1/1/2015) |
|
|
| Massachusetts |
2020 w/MA amendments (12/27/2019) |
|
|
| Michigan |
2017
Commercial (1/4/2019)
One- and two-family dwellings (2/8/2016) |
|
|
Minnesota
|
2020 (11/17/2020)
|
|
|
Mississippi
|
Local adoption only |
|
|
Missouri
|
Local adoption only
|
|
|
Montana
|
2014 (10/23/2014) |
|
Update process (2017) underway (effective date not established)
|
Nebraska
|
2017 (8/1/17)
|
Update process underway
(Effective date not established)
|
|
Nevada
|
2011 (7/1/13 - Nevada State Pubic Works Division) |
|
|
New Hampshire
|
2017 with NH amendments (1/1/2018)
|
Update process underway
(Effective date not established)
|
|
New Jersey
|
2017 (9/3/19 with 6 month grace period for new permits)
|
|
|
New Mexico
|
2017 (2/1/2018) |
Update process underway
(Effective date not established)
|
|
| New York |
2017 (5/12/2020)
|
|
|
North Carolina
|
2017 (6/12/2018)
|
Update process underway
(Effective date not established)
|
|
North Dakota
|
2020 (1/1/2021) |
|
|
Ohio
|
2017
Commercial (11/1/2017)
2017, with Ohio amendments
One-, two- and three-family dwellings (7/1/2019)
|
Update process underway
(Effective date not established)
|
|
Oklahoma
|
2014
Commercial (11/1/2015)
Residential 2015 IRC Electrical
Chapters (11/1/2016)
|
|
Update process (2017) underway
(effective date not established)
|
Oregon
|
2020 with OR amendments (4/1/2021)
|
|
|
Pennsylvania
|
2014
|
|
Update (2017) process underway
(Effective date not established) |
Rhode Island
|
2017 (8/1/2019)
|
Update process underway
(Effective date not established)
|
|
South Carolina
|
2017 with SC amendments (1/1/2020)
|
|
|
South Dakota
|
2020 (7/1/2020)
|
|
|
Tennessee
|
2017 (10/1/2018)
|
|
|
Texas
|
2020 (11/1/2020)
|
|
|
Utah
|
2017
Commercial (7/1/2018)
2014
One- and two-family dwellings (7/1/2016)
|
Update process underway
(7/1/2021) |
|
Vermont
|
2017 with Vermont amendments (10/1/2017)
|
Update process underway
(Effective date not established) |
|
Virginia
|
2014
|
|
|
| Washington |
2020 (10/29/2020)
|
|
|
West Virginia
|
2017 (3/24/2020)
|
|
|
Wisconsin
|
2017
Commercial (8/1/2018)
|
|
One- and two-family dwellings (1/1/2020) |
Wyoming
|
2020 (7/1/2020)
|
|
|
| Chicago |
2017 with Chicago amendments (3/1/2018) |
|
|
| 2011 (Effective date not established) |
| Texas |
2014 (9/1/2014) |
Adoption process underway (9/1/17) |