National Electrical Code (NFPA 70)
Montana: National Electrical Code, lead only
Mike Holt’s NEC adoption list shows Montana on the 2020 NEC, effective Jun 10, 2022. Montana’s own records for the NEC have not been read yet.
Tracker reading
Edition a tracker lists
2020 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 Montana’s own record.
Mike Holt’s NEC adoption listCross-check
2020 NEC, effective Jun 10, 2022
‘Effective 6/10/22 with MT amendments’.
NFPA’s enforcement mapCross-check
2020 NEC, effective Jun 10, 2022
Montana 2020 with MT amendments (6/10/2022) 2023 update process underway (Projected 9/2026)
nfpa.org (opens in a new tab)Updated Aug 3, 2026Read