NEC® Adoption List

A great site to stay up to date with the latest happenings with the NEC® adoptions and to sign up for code alerts is: https://www.nema.org/standards/technical/code-alerts
Please Note: Due to the nature of the adoption process, we cannot absolutely guarantee the correctness of this page. If you know of an error, please click here to notify us.

State

NEC Edition

Comments

Alabama

2020

2020 effective 7/1/23. The codes and standards adopted by the Alabama Building Commission as the State Building Code apply to all State Buildings and Construction, Schools (Public and Private), Hotels/Motels, and Motion Picture Theaters.

Alaska

2020

Effective April 16, 2022

Arizona

-

The NEC is not adopted at the state level. Each municipality is free to adopt and amend the NEC.

Arkansas

2020

With AR amendments effective 8/1/2022

California

2020

Effective on January 1, 2023 with some CA amendments.

Colorado

2023

Effective 8/1/23

Connecticut

2020

Effective October 1, 2022

Delaware

2020

As of September 1, 2021

District of Columbia

2014

Effective May 29, 2020

Florida

2020

Effective 12/31/2023

Georgia

2020

effective January 1, 2021

Hawaii

2017

Effective 8/21/18

Idaho

2017

2017 NEC effective July 1, 2017

Illinois

-

There is no statewide adoption of the NEC. The state adopted the 2008NEC statewide effective July 1, 2011 for non-building code jurisdictions. The following local jurisdictions have adopted the 2008 NEC: Bloomington, Danville, Decatur, Glenn Ellyn, Mattoon, Normal, Rock Island, State of Illinois Capital Development, Washington.

Indiana

2008

Effective 6/2/2009. Deleted all Arc-Fault circuit protection and Tamper Resistant Receptacle requirements.

Iowa

2020

Effective 4/1/21

Kansas

-

There is no statewide adoption of the NEC in Kansas. 2008 NEC was adopted by the state for state-owned buildings 2/4/11, but local jurisdictions can adopt and enforce different codes.

Kentucky

2017

The 2018 KBC and the 2018 KRC went into effect on Aug. 22, 2018. The mandatory effective date for the 2018 KBC and the 2018 KRC is Jan. 1, 2019.

Louisiana

2020

Effective 1/1/2023

Maine

2020

Effective July 2, 2021

Maryland

2020

Effective 5/29/23

Massachusetts

2023

Effective February 17, 2023, with Massachusetts amendments

Michigan

2017

2017, effective January 4, 2019. The Michigan Department of Licensing and Regulatory Affairs (LARA) has updated the MI Part 8 Rules Electrical Code (2017 NEC) for 3-family and larger and commercial structures in the state.

Minnesota

2023

2023 effective July 1, 2023

Mississippi

2014

Effective 5/1/2017. The updated MFPC is based on the 2015 International Building Code, 2015 International Fire Code, and 2015 International Residential Code. The 2014 National Electrical Code and NFPA 72-2013 are adopted as referenced. The MFPC applies to all state owned buildings, places of assembly, buildings over 75' in height, correctional facilities, and private fraternity and sorority houses. Jurisdictions may adopt local fire codes that are not less stringent than the MFPC, as determined by the State Fire Marshal.

Missouri

-

The NEC is adopted and enforced at the local level. The city of St Louis adopted 2017 NEC effective 8/1/18.

Montana

2020

Effective June 10, 2022

Nebraska

2017

2017 NEC with an effective date of August 1, 2017

Nevada

-

The NEC is adopted and enforced at the local level.State Public Works Division is on the NEC-2011 effective 7/1/13.

New Hampshire

2020

Effective July 1, 2022

New Jersey

2020

2020 NEC effective September 6, 2022

New Mexico

2020

2020 NEC effective 3/28/2023

New York

2017

2017 NEC effective 5/12/2020. The official effective date of the 2020 New York State Uniform Fire Prevention and Building Code and State Energy Code, which references the 2017 National Electrical Code, is May 12, 2020, for all local jurisdictions statewide except for the City of New York.

North Carolina

2020

Effective November 1, 2021, supplemented by State Amendments.

North Dakota

2020

2020 NEC with an effective date of 1/1/2021

Ohio

2017

Effective November 1, 2017 for all occupancies excluding 1-, 2-, & 3-Family dwellings.

Oklahoma

2020

Effective September 14, 2022

Oregon

2020

The new 2021 OESC, based on the 2020 National Electrical Code (NEC), has been adopted and becomes effective April 1, 2021.

Pennsylvania

2017

Effective 2/14/2022

Rhode Island

2020

Effective 2/1/2022

South Carolina

2020

Effective 1/1/2023

South Dakota

2020

Effective July 1, 2020, with exceptions.

Tennessee

2017

Effective date October 1, 2018

Texas

2023

2023 NEC effective September 1, 2023

Utah

2020

2020 for Commercial (7/1/2021); 2014 (2015 IRC) for One- and two-family dwellings (7/1/2016)

Vermont

2017

Effective October 1, 2017, with a few state-specific amendments.

Virginia

2017

Effective July 1, 2021

Washington

2020

2020 NEC was adopted with minimal amendments, effective 10/29/20.

West Virginia

2020

As of August 1, 2022

Wisconsin

2017

Effective 8/1/18 for commercial structures; planned adoption for one- and two-family dwellings is January 2020.

Wyoming

2023

Effective 7/1/2023