Ohio master electrician exam: frequently asked questions

Ohio electrical contractor exam preparation should include open-book code navigation and reference-use practice. Candidates should follow the current OCILB and testing-provider exam instructions for the exact references, tabs, notes, calculators, and code edition allowed during testing.

The Ohio Electrical Contractor examination contains 100 scored questions and may include additional pretest items that are not scored.

The Ohio Electrical Contractor examination is listed with 4 hours of testing time.

The Ohio Electrical Contractor examination requires a 70% passing score.

Ohio electrical contractor licensing is administered through the Ohio Construction Industry Licensing Board under the Ohio Department of Commerce.

The Ohio Electrical Contractor examination is listed with a 70 percent passing score.

Ohio uses a statewide Electrical Contractor license through the Ohio Construction Industry Licensing Board for commercial electrical contracting. Ohio does not use the same statewide Master Electrician license structure found in some other states.

Ohio electrical contractor licensing is regulated by the Ohio Construction Industry Licensing Board, which is part of the Ohio Department of Commerce, Division of Industrial Compliance.

Approved references include Ugly’s Electrical References, the National Electrical Code or National Electrical Code Handbook, and an approved electrical field reference such as the Electrical Field Reference Handbook or IBEW-NECA Field Reference Book.

Ohio’s state-level electrical credential is the OCILB Electrical Contractor license rather than one simple statewide Master Electrician license title. Local jurisdictions may also maintain electrical worker or local qualification requirements.

Yes. Ohio Electrical Contractor licensing includes a Business and Law examination in addition to the electrical trade examination.

The common OCILB path requires the applicant to have been a tradesperson in the trade for at least five years immediately before applying. A registered engineer pathway may apply when the applicant meets the required engineering and business experience conditions.

PSI provides examination services for Ohio contractor licensing candidates approved through the Ohio Construction Industry Licensing Board.

The content outline includes General Electrical Knowledge, Transformers and Equipment, Service Feeders and Branch Circuits, Raceways, Boxes, and Panelboards, Conductors and Cables, Control Devices, Motors and Generators, Utilization Equipment, and Special Occupancies and Equipment.

Yes. Ohio electrical contractor licensing is handled at the state level through the Ohio Construction Industry Licensing Board within the Ohio Department of Commerce.

Yes. Candidates should confirm the required credential, eligibility requirements, application process, code edition, reference rules, and post-exam licensing steps before scheduling or taking an exam.

Yes. The 2026 NEC is useful for updated code-cycle study, code-navigation practice, calculations, and long-term electrical knowledge. Candidates should use the official NEC edition required for exam day.

NEC tabs help candidates locate major articles, chapters, tables, and subject areas faster during study. This supports stronger code-navigation practice and helps candidates become more comfortable using the NEC as a reference.

Calculation practice is important because electrical exams can include load calculations, conductor sizing, branch circuit work, service and feeder calculations, box fill, raceway fill, motor calculations, transformer calculations, electrical theory, and other math-based topics. A dedicated calculations study guide helps candidates practice these skills consistently.

Exam-room reference rules are controlled by the current candidate bulletin and testing instructions. Candidates should review the official rules before test day to confirm which books and materials are permitted.

Yes. Ohio commercial contractor applicants must take the Ohio Contractor’s Business and Law examination in addition to the required trade-specific examination.

Yes. All Ohio contractor license classifications must take the Ohio Contractor’s Business and Law exam in addition to the required trade-specific examination.