National Electrical Code (NFPA 70)
Connecticut enforces the 2020 NEC
The 2020 National Electrical Code (NEC) has been in force in Connecticut since Oct 1, 2022. It applies statewide. Adopted by State Building Inspector and Codes and Standards Committee, Department of Administrative Services (DAS), with Commissioner approval; Legislative Regulation Review Committee review. The legal citation is Conn. Gen. Stat. 29-252 and 29-252b; 2022 Connecticut State Building Code (CSBC).
Record of adoption
Edition in force
2020 NEC
2022 Connecticut State Building Code (electrical, 2020 NFPA 70)
Verified
- In force since
- Legal citation
- Conn. Gen. Stat. 29-252 and 29-252b; 2022 Connecticut State Building Code (CSBC)
- Adopted by
- State Building Inspector and Codes and Standards Committee, Department of Administrative Services (DAS), with Commissioner approval; Legislative Regulation Review Committee review
- Second reading
- Applies
- Statewide
- Also called
- CSBC, 2022 SBC
Applies to projects with permit applications filed on or after Oct 1, 2022.
Coming next
- 2023 NECPartialNo date yetProposedConn. Gen. Stat. 29-252b; DAS code adoption process page
DAS lists 2023 NFPA 70 as anticipated for the 2026 codes. Originally expected Jul 1, 2026; DAS says the date has been delayed pending Legislative Regulation Review Committee approval. No later approval or new date found.
How Connecticut adopts the NEC
The State Building Inspector and Codes and Standards Committee jointly adopt the State Building Code with the DAS Commissioner’s approval, on a nationally recognized model code, under the special procedure in CGS 29-252b rather than UAPA chapter 54. The code-making record goes to the Legislative Regulation Review Committee, which has 45 days to approve, disapprove or reject without prejudice; no action in 45 days is deemed approval. After approval the code is effective on posting on the DAS website unless a later date is set.
Cycle. Roughly triennial, following the ICC cycle; CGS 29-252 calls for revision within 18 months of publication of subsequent model code revisions. 2016, 2018 and 2022 codes took effect October 1; the 2026 edition is delayed.
How it was checked
Verified
Two separate readings of the state’s own record agree, and the passage is on file word for word.
Read twice: a second, blind reading of the state’s record agreed with the first on .
The state’s record was last read on , from three source pages.
Evidence 3 sources
Sources for the record itself come first, the state’s own records ahead of others. A label marks a source about something else, such as an exception. A source marked secondary is not the state’s own record.
“2022 State Building Code - Effective 10/1/2022 (currently in effect)”
History of the Connecticut State Building CodeConnecticut Department of Administrative Servicesportal.ct.gov (opens in a new tab)Agency pageRetrieved “based on the International Code Council’s widely adopted 2021 International Codes”
Connecticut State Building Codes adoption process (knowledge base)Connecticut Department of Administrative Servicesportal.ct.gov (opens in a new tab)Agency pageRetrieved “It applies to projects with permit applications filed from October 1, 2022.”
Safety Codes and InspectionsConnecticut Department of Administrative Servicesportal.ct.gov (opens in a new tab)Agency pageRetrieved
Tracker cross-checks
Code adoption trackers are a cross-check. They are not Connecticut’s own record.
NFPA’s enforcement mapCross-checkAgrees with the record
Connecticut 2020 with CT amendments (10/1/2022); 2023 update process underway (Effective date not established) (NEC enforcement table as of Aug 3, 2026)