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Ohio — electrical code & licensing

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The code

Edition in force2023 NEC (NFPA 70-23)
Edition structureEdition split by scope
Effective date2024-03-01
Date as recorded2024-03-01 (Ohio Building Code track); 2024-04-15 (Residential Code of Ohio, 1-3 family dwellings)
Adopted byOhio Board of Building Standards, Ohio Department of Commerce
Adoption sourcehttps://codes.ohio.gov/assets/laws/administrative-code/rules/4101/1/4101$1-35-01_eff_10_15_25.pdf
State amendmentsState amendments at their own official document — https://dam.assets.ohio.gov/image/upload/com.ohio.gov/documents/DICO/BBS/4101_8-34-01_Electrical_eff_4-15-24.pdf

Licensing

ModelState license for commercial electrical contractors only; no state journeyman/master electrician license; residential buildings are outside ORC Chapter 4740 licensing
AuthorityOhio Construction Industry Licensing Board (OCILB), Ohio Department of Commerce
Licensing sourcehttps://codes.ohio.gov/ohio-revised-code/chapter-4740
License classeshttps://com.ohio.gov/divisions-and-programs/industrial-compliance

Permits & inspections

Not yet recorded.

How this record was verified

AdoptionVerified
AmendmentsVerified
LicensingVerified
Permits & inspectionsVerified

Which edition applies where

Ohio Building Code track 2023 NEC · from 2024-03-01
Same 2023 NEC, OBC effective date.
Residential Code of Ohio track (1–3 family) 2023 NEC · from 2024-04-15
Same 2023 NEC, RCO effective date.
Working notes

NEC adopted by reference in OBC Chapter 35 (OAC 4101:1-35-01 lists '70-23 - National Electrical Code', with s.210.8(F) Exception No. 2 non-expiring); residential amendments at RCO 4101:8-34-01 (amendments_url). License classes URL is the Dept. of Commerce / Industrial Compliance landing page opened this pass; a deeper OCILB classification sub-page was not separately verified. Permitting runs through certified local building departments; no state-issued electrical permit regime was established, so the permit field is blank.

Coded to schema v2 Option B at the 2026-10-27 wiring pass from the v1 row verbatim; migration settles no open facts.

Compiled from the official sources above; retrieved 2026-10-25. Record basis: official text read firsthand.

Reference only. Compiled from the cited official sources as of the date shown; adoptions and rules change. Confirm with the authority having jurisdiction before designing or permitting work.