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NEC Adoption by State

As of April 1, 2019, the 2017 NEC is in effect in 28 states, the 2014 NEC is in effect in 15 states, the 2011 NEC is in effect in one state, and the 2008 NEC is in effect in three states.

Note: The 2017 edition of the NEC was issued by the NFPA Standards Council on August 4, 2016. The effective date was August 24, 2016, when it officially became available for adoption by federal, state, county, and municipal governmental entities.

NEC in effect - April 1, 2019

As of April 1, 28 states have completed its 2017 NEC update process. Ten other states are in the process of revising the statute or administrative rule through which the NEC is updated to reference the 2017 edition. Nine states are using the 2014, 2011 or 2008 of the NEC and are not in the process of updating the edition currently in use.

 

NEC process in progress - April 1, 2019

 

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)

State

Current Edition Of The NEC In Effect (Effective Date)

2017 NEC UPDATE Status (Effective Date)

Other Editions Of NEC Update Status (Effective Date)

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 

2014 (1/1/2017) 

Update process underway
(1/1/2020)

 

Colorado

2017 (6/1/2017) 

 

 

Connecticut

2017 (10/1/2018)

 

 

Delaware

2014 (3/11/2016)

Update process underway 
(Effective date not established)

 

Florida

2014 (12/31/2017)

Update process underway (12/31/2020) 

 

Georgia 

2017 (1/1/2018)

 

 

Hawaii  2017 (8/21/2018)
 
   
Idaho 2017 (7/1/2017)    
Illinois  2008 (7/1/11 - commercial occupancies for areas outside of local jurisdictions that have adoption authority) Not in process Not in process
Indiana 2008 One- and two-family dwellings -2018 IRC Electrical Chapters, based on 2017 NEC
(Effective date not established)
Not in process
Iowa  2017 (1/1/2018)     
Kansas 2008 (2/4/11 - State Fire Marshal) Not in process Not in process
Kentucky
 
2017 (1/1/2019)     
Louisiana  2014 (2/1/2018)  
 
Maine  2017 with Maine amendments (11/6/2017)    
Maryland  2014 (1/1/2015)  Update process underway (1/1/2020)  
Massachusetts   2017 w/MA Amendments (1/1/2017)     
Michigan   2017
Commercial (1/4/2019)
One- and two-family dwellings (2/8/2016) 
   
Minnesota 
 
2017 (7/1/2017)    
Mississippi Local adoption only    
Missouri  Local adoption only    
Montana  2014 (10/23/2014) Update process underway (effective date not established)  
Nebraska 
 
2017 (8/1/17)    
Nevada 2011 (7/1/13 - Nevada State Pubic Works Division) Not in process Not in process
New Hampshire  2017 with NH amendments (1/1/2018)    
New Jersey 2014 (9/21/15 with 6 month grace period for new permits) Update process underway
(effective date not established)
 
New Mexico  2017 (2/1/2018)     
New York  2014 (4/6/2016 with 6-month grace period ending 10/3/2016)  Update process underway 
(effective date not established)
 
North Carolina 
 
2017 (6/12/2018)    
North Dakota 
 
2017 (7/1/2017)    
Ohio 
 

2017
Commercial (11/1/2017)

2014
One-, two- and three-family dwellings (1/1/2016)
 

One-, two- and three-family dwellings (7/1/2019)  
Oklahoma 
 
2014
Commercial (11/1/2015)
Residential 2015 IRC Electrical
Chapters (11/1/2016) 
Update process underway
(effective date not established)
 
Oregon 
 
2017 with Oregon amendments (10/1/2017)
 
   
Pennsylvania
 
2014
 
   
Rhode Island 
 
2014 (7/1/2014)
 
Update process underway (5/1/2019)  
South Carolina 2014 (7/1/2016) Update process underway (1/1/2020 projected)  
South Dakota 
 
2017 (7/1/2017)
 
   
Tennessee 2017 (10/1/2018)    
Texas 2017 (9/1/2017)    
Utah

2017 
Commercial (7/1/2018)

2014
One- and two-family dwellings (7/1/2016)

   
Vermont 2017 with Vermont amendments (10/1/2017)    
Virginia 2014 
 
   
Washington 2017 (7/1/2017)    
West Virginia 2014 (8/1/2016) Not in process  
Wisconsin 2017
Commercial (8/1/2018)
One- and two-family dwellings (1/1/2020)  
Wyoming 2017 (7/1/2017)    
Chicago 2017 with Chicago amendments (3/1/2018)    
New York City 2008 w/NYC amendments (7/1/2011)   2014 (effective date not established)

 

 

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