About the Oklahoma Electrical Contractor license
Oklahoma licenses electricians through the Oklahoma Construction Industries Board (CIB). The board issues three electrical contractor classifications — Unlimited, Limited, and Residential — each with its own experience path; this guide is built around the Unlimited Electrical Contractor exam, the broadest and most common credential. To sit for it, you must already hold an Unlimited Electrical Journeyman license and document 12,000 total hours of electrical construction experience, including two years as a licensed unlimited electrical journeyman and at least 6,000 hours of commercial or industrial work; up to 2,000 hours may be satisfied by verified classroom education. (The Limited Electrical Contractor license instead requires either an electrical-engineering degree plus 8,000 hours, or 16,000 hours of trade/estimating/project-management experience, with no journeyman prerequisite — but it also may not perform apprentice or journeyman work directly.) A holder at the Unlimited level can typically pull permits, supervise journeymen and apprentices, design installations, and serve as the qualifying individual for a licensed contracting business.
The exam is National Electrical Code (NEC) based, because Oklahoma adopts the NEC as its electrical code. It is normally open book: you may bring a clean, bound copy of the adopted NEC edition. Tabs and highlighting are usually permitted; loose or handwritten notes usually are not — confirm the current rule with the vendor. Plan to tab and index your code book before test day, because the exam is as much a test of how fast you can locate a section as it is of what you have memorized.
Know these scope facts cold, because the exam asks them in plain-language form: the license is held by the individual, not the company; most installations require a permit and inspection before concealment (rough-in) and again at final; you must work within the classification you hold; and performing electrical work without the required license, or beyond your scope, is a violation that can cost you the license and carry civil penalties.
How Oklahoma licensing works
- Experience: the Unlimited Electrical Contractor license requires 12,000 verifiable hours of electrical construction work, including two years as a licensed unlimited electrical journeyman before the application, and at least 6,000 hours of commercial or industrial work; up to 2,000 hours may be credited from verified classroom education. The prerequisite Unlimited Electrical Journeyman license requires 8,000 hours as a registered apprentice, at least 4,000 of them commercial/industrial.
- Education: formal electrical-education classroom hours (verified by official transcript) can offset up to 2,000 hours of the on-the-job experience requirement at both the journeyman and contractor level — they do not replace the underlying license prerequisite.
- Application: submit the CIB application and the license fee the application prints, plus proof of experience. The PSI registration fee in bulletin 634 is 92 dollars per examination portion, not refundable (signed off by a supervising contractor or journeyman) to the CIB before you are approved to sit.
- Exam vendor: PSI. PSI bulletin 634, copyright 2026, effective September 11, 2026, gives both the Limited and the Unlimited Electrical Contractor trade exams as 100 scored items, 240 minutes, 70 percent. The bulletin header does not add an unscored experimental block. Business and Law is a separate 50-item, 120-minute, 70 percent paper.
- Renewal: Continuing education, effective January 1, 2026, is 12 hours in the 36 months before a journeyman or contractor license expires. Six of those hours are codes and revisions adopted by the Oklahoma Uniform Building Code Commission. The other six are approved trade subjects. That 12-hour block is not a three-year license term.
As of this guide's writing, Oklahoma's electrical exams are based on the 2023 NEC edition (per the CIB/PSI candidate information bulletin). Before you rely on any value in this guide, confirm the currently adopted NEC edition is unchanged on the board and PSI bulletin — ampacities, GFCI/AFCI scope, working-clearance distances, and receptacle-spacing rules all change between editions, and the exam is written to the edition Oklahoma has adopted, not necessarily the newest one published.
This is the opening of the full study guide. The complete guide continues into code navigation, worked calculations and solved exam questions.
