- OK-ELEC is the Oklahoma Unlimited Electrical Journeyman Examination, licensed by the Oklahoma Construction Industries Board and administered by PSI.
- The exam has 100 scored questions (plus up to 10 unscored items) in 4 hours, and you need 70% to pass.
- Candidates need 8,000 hours of registered electrical-construction experience, including 4,000 commercial or industrial hours, and must be at least 18.
- The exam costs $92 through PSI; the journeyman application and license fee is a separate $75, with $75 annual renewals.
What Is OK-ELEC Certification?
OK-ELEC stands for the Oklahoma Unlimited Electrical Journeyman Examination - the state licensing exam that authorizes electricians in Oklahoma to perform unlimited journeyman-level electrical work under the state's construction licensing framework. It is not a voluntary industry credential; it is the legal gateway to working as a licensed journeyman electrician anywhere in Oklahoma, on residential, commercial, and industrial projects alike. If you're wondering exactly what the letters mean or how the license fits into your career path, our companion pieces on OK-ELEC Meaning and What Does OK-ELEC Stand For? break down the terminology in more detail.
Unlike a certification you can add to a resume for extra credit, this exam is a prerequisite for legally performing unlimited electrical work in the state. Passing it demonstrates that you understand the current National Electrical Code (NEC), state-specific installation rules, and safe work practices well enough to be trusted with unsupervised commercial, industrial, and residential wiring tasks.
Who Licenses and Administers It
Two organizations are involved, and it's worth understanding the difference between them:
- Oklahoma Construction Industries Board (CIB): This state agency licenses the trade. The CIB sets eligibility rules, reviews your documented experience hours, issues the journeyman license once you pass, and manages renewals.
- PSI: PSI is the third-party testing vendor that actually administers the computer-based exam at approved test centers for a $92 fee.
This split matters because your application paperwork and experience documentation go through the CIB, while your test scheduling and exam-day logistics go through PSI. Mixing up the two agencies is a common source of confusion for first-time applicants, so keep them straight as you plan your timeline. For a full walkthrough of qualification rules, see OK-ELEC Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Eligibility and Experience Requirements
Before you can sit for the exam, the CIB requires that you meet a specific age and experience threshold. This isn't a credential you can study your way into without fieldwork - it's built on documented, verifiable hands-on time.
- Minimum age: 18 years old.
- Total experience: 8,000 hours of registered electrical-construction experience.
- Commercial/industrial minimum: At least 4,000 of those hours must be commercial or industrial work specifically.
- Education credit: Up to 2,000 hours may be satisfied through formal electrical education, reducing but not eliminating the fieldwork requirement.
In practical terms, this means most candidates spend several years working under supervision before they're even eligible to schedule the exam. Because the commercial/industrial hour requirement is substantial, apprentices who spend most of their time on small residential service calls may need to seek out additional commercial job assignments to qualify.
Key Takeaway
Start tracking your hours by category (residential vs. commercial/industrial) from day one of your apprenticeship - reconstructing exact hour breakdowns later is far harder than logging them as you go.
Exam Format, Fees, and Delivery
The exam itself is a computer-delivered, open-book test - a format that changes how you should prepare compared to closed-book exams. Here's what the structure looks like:
- Length: 100 scored questions, with up to 10 additional unscored experimental items mixed in (you won't know which are which, but experimental item time doesn't count against your limit).
- Time limit: 4 hours.
- Passing score: 70%.
- Delivery: Computer-based, administered through PSI.
- Cost: $92 per exam attempt.
- Code edition: The current outline is based on the 2023 NEC.
For a deep dive into exactly how the score is calculated and what 70% translates to in raw questions, read OK-ELEC Passing Score 2026: Exactly What You Need to Pass. If you're trying to gauge overall difficulty before committing to a study plan, How Hard Is the OK-ELEC Exam? Complete Difficulty Guide 2026 and OK-ELEC Pass Rate 2026: What the Data Shows are worth reading side by side.
What "Open Book" Actually Allows
Open-book doesn't mean bring whatever you want. The permitted reference materials are tightly controlled:
- Allowed: A standard NEC codebook with permanent tabs.
- Not allowed: NEC Handbooks (the annotated commentary editions) and spiral-bound NEC copies.
- Calculators: A silent, nonprinting, nonprogrammable calculator is permitted.
This restriction exists because Handbooks contain explanatory commentary that goes beyond the code text itself, and spiral binding is typically excluded for consistency and security reasons at the test center. Practicing with the exact code book format you'll bring to the exam - tabbed the way you plan to tab it - is one of the highest-leverage things you can do before test day.
The 13 Domains Tested
The exam content is organized into 13 domains, and six of them tie for the highest weight - meaning there is no single "biggest" section to prioritize above the rest. This flat weighting at the top makes broad, even coverage more important than betting heavily on one or two topics. For the complete weighting breakdown and study priority order, see OK-ELEC Exam Domains 2026: Complete Guide to All 13 Content Areas.
Domain 1: General Knowledge
Broad foundational questions covering code organization, definitions, and how to navigate the NEC quickly under time pressure.
- Knowing where key definitions live in Article 100
Domain 2: General Electrical Knowledge
Core electrical theory - voltage, current, resistance, power calculations - applied in a code-compliance context rather than pure theory.
- Ohm's Law and power formula applications on installation problems
Domain 3: Electrical Installation Requirements
General installation rules that apply across nearly every wiring method and occupancy type.
- Clearance, access, and workspace requirements
Domain 4: Services, Feeders, and Branch Circuits
Sizing and rules for service entrances, feeders, and branch circuits - a heavily calculation-driven domain.
- Load calculations and conductor sizing for services
Domain 5: Overcurrent Protection
Breaker and fuse sizing, coordination, and protection rules tied directly to conductor ampacity.
- Matching overcurrent devices to conductor and equipment ratings
Domain 6: Grounding and Bonding
One of the most heavily tested and most commonly missed areas on any state electrical exam - grounding electrode conductors, bonding jumpers, and equipment grounding paths.
- Sizing grounding electrode conductors from NEC tables
Domain 7: Conductors and Cables
Conductor types, ampacity tables, insulation ratings, and derating for conduit fill and ambient temperature.
- Applying correction and adjustment factors correctly
Domain 8: Raceways and Boxes
Conduit fill calculations, box fill requirements, and support/spacing rules for various raceway types.
- Box fill calculations with multiple conductor sizes
Domain 9: Special Occupancies and Equipment (Including Swimming Pools)
Hazardous locations, health care facilities, and swimming pool/spa bonding and clearance rules - a domain many candidates underestimate.
- Pool bonding grid and equipotential plane requirements
Domain 10: Low Voltage, Alarms, Signaling Systems, and Communications
Class 1/2/3 circuits, fire alarm wiring rules, and communications system separation requirements.
- Separation requirements between power and low-voltage wiring
Domain 11: Lighting and Signs
Fixture installation, sign circuit disconnects, and lighting-specific code sections.
- Disconnect requirements for electric signs
Domain 12: Safety
Workplace safety rules, arc-flash awareness, and lockout/tagout concepts as they intersect with code requirements.
- PPE and safe work practice fundamentals
Domain 13: Motors and Transformers
Motor branch-circuit protection, overload sizing, and transformer primary/secondary protection calculations.
- Motor full-load current tables and overload sizing
Licensing, Fees, and Renewal
Passing the exam is only the middle step. After you pass, you still need to complete the licensing process with the CIB:
- Initial application and license fee: $75.
- Annual renewal fee: $75 per year.
- Continuing education: Starting in 2026, license holders must complete 12 approved CE hours every 36 months to keep their license active.
Budgeting for the full path - the $92 PSI exam fee plus the $75 initial license fee, then ongoing $75 annual renewals and periodic CE hours - gives you a realistic total cost picture rather than just the exam price. For a line-by-line breakdown, see OK-ELEC Certification Cost 2026: Complete Pricing Breakdown.
Who Needs OK-ELEC Certification
This license is required for anyone who wants to perform unlimited electrical journeyman work in Oklahoma without direct, constant supervision. In practice, that includes:
- Electricians moving from apprentice status into independent journeyman work on commercial and industrial job sites
- Electrical contractors hiring journeymen who need to be individually licensed under state law
- Tradespeople relocating to Oklahoma who need to establish state licensure before taking on unsupervised work
- Maintenance electricians in industrial facilities where unlimited scope licensing is required by the employer or the job's classification
Because the license is tied to real job classifications and pay grades, many candidates pursue it specifically to unlock higher-paying positions and supervisory roles. If you're weighing whether the time and fees are worth it relative to your current earning potential, OK-ELEC Salary Guide 2026: Complete Earnings Analysis and Is the OK-ELEC Certification Worth It? Complete ROI Analysis 2026 walk through that decision in detail. You can also browse OK-ELEC Jobs to see how the license shows up in real hiring postings across the state.
How to Prepare Efficiently
Because six domains carry equal top weight, an effective study plan spreads deep review across all of them rather than concentrating on one or two "favorite" topics. A reasonable approach is to pair heavier calculation domains (Services/Feeders/Branch Circuits, Overcurrent Protection, Conductors and Cables, Motors and Transformers) with lighter recall-based sessions on Safety and General Knowledge in the same week, so you're not doing math-heavy work for days on end.
Code Navigation and Foundations
- Build your permanent tab system for General Knowledge, General Electrical Knowledge, and Electrical Installation Requirements
- Practice locating Article 100 definitions and general requirement sections quickly
Calculation-Heavy Domains
- Drill Services, Feeders, and Branch Circuits load calculations
- Work Overcurrent Protection and Conductors/Cables ampacity and derating problems
Grounding, Raceways, and Special Occupancies
- Focus extra time on Grounding and Bonding, historically a high-miss domain
- Review Raceways and Boxes fill calculations and Special Occupancies rules, including swimming pools
Systems, Lighting, Safety, and Full Timed Practice
- Cover Low Voltage/Alarms/Communications, Lighting and Signs, Safety, and Motors/Transformers
- Run full 100-question timed practice sessions using your actual tabbed code book and calculator
Timed, full-length practice under real conditions - same code book, same calculator, same 4-hour limit - is what closes the gap between knowing the material and performing under exam pressure. Our practice test platform is built specifically around these 13 domains so you can identify weak spots before test day rather than during it. For a structured week-by-week plan with more detail, see OK-ELEC Study Guide 2026: How to Pass on Your First Attempt, and keep OK-ELEC Cheat Sheet 2026: One-Page Review of Must-Know Facts handy for last-minute review the day before your exam.
| Requirement | Detail |
|---|---|
| Minimum age | 18 |
| Total experience | 8,000 hours |
| Commercial/industrial hours | 4,000 minimum |
| Education credit toward hours | Up to 2,000 hours |
| Exam fee (PSI) | $92 |
| Initial license/application fee (CIB) | $75 |
| Annual renewal fee | $75 |
| CE requirement | 12 hours every 36 months, starting 2026 |
Before locking in a test date, double-check current scheduling windows and blackout periods with PSI - details on how testing windows work throughout the year are covered in OK-ELEC Exam Dates 2026: Testing Windows, Deadlines & Scheduling. And if you're still building general familiarity with electrical licensing training paths in Oklahoma before you even start logging hours, OK-ELEC Training and What Is OK-ELEC? are good starting points, along with our full practice test site for hands-on domain-by-domain drilling.
Frequently Asked Questions
No. OK-ELEC specifically refers to Oklahoma's Unlimited Electrical Journeyman Examination, licensed through the Oklahoma Construction Industries Board and administered by PSI. It is a state-specific license tied to Oklahoma law, not a national certification.
No. NEC Handbooks and spiral-bound NEC copies are not allowed. You may bring a standard NEC codebook with permanent tabs, along with a silent, nonprinting, nonprogrammable calculator.
You need 8,000 hours of registered electrical-construction experience, including at least 4,000 commercial or industrial hours. Up to 2,000 of the total hours can come from formal electrical education instead of fieldwork.
You need 70% on 100 scored questions within a 4-hour, computer-delivered, open-book exam. Up to 10 additional unscored experimental questions may appear, but time spent on them doesn't count against your 4-hour limit.
Yes. Starting in 2026, licensees must complete 12 approved continuing education hours every 36 months in addition to paying the $75 annual renewal fee.