National Electrical Code (NFPA 70)
New Hampshire: National Electrical Code, lead only
Mike Holt’s NEC adoption list shows New Hampshire on the 2023 NEC, effective Jul 1, 2025. New Hampshire’s own records for the NEC have not been read yet. The trackers disagree; both readings are below.
Tracker reading
Edition a tracker lists
2023 NEC
Lead only
How it was checked
Lead only
A tracker lists this edition. Nobody has checked it against the state’s own record yet.
What the trackers say
Code adoption trackers are a cross-check. They are not New Hampshire’s own record.
Mike Holt’s NEC adoption listCross-check
2023 NEC, effective Jul 1, 2025
‘Effective 7/1/25’.
NFPA’s enforcement mapCross-check
2023 NEC, effective Jul 1, 2025
New Hampshire 2023 with NH amendments (7/1/2025 with 6-month grace period permitting use of prior edition that was in effect)
nfpa.org (opens in a new tab)Updated Aug 3, 2026Read
IAEI’s code adoption pageCross-check
2020 NEC, effective Jul 1, 2022
2020 (7/1/2022)