Important Oklahoma licensing fact: "Master Electrician" is common study language, but the official broad statewide contractor credential is the Unlimited Electrical Contractor license. Oklahoma's CIB identifies Electrical Contractor as the highest-ranking electrical license category.
What Is Oklahoma Master Electrician Contractor Exam Prep?
Oklahoma Master Electrician Contractor Exam Prep is advanced electrical preparation for experienced electricians moving from journey-level work into electrical contracting, supervision, estimating, project responsibility, and business ownership.
The official Oklahoma master-level path is the Unlimited Electrical Contractor license. Unlimited contractors may perform broad electrical contracting work without the residential limitations attached to the Residential Electrical Contractor classification.
The examination measures contractor-level knowledge of electrical design, planning, layout, installation, repair, and alteration involving conductors, fixtures, appliances, apparatus, raceways, conduit, and equipment that use electrical energy for light, heat, power, data, and communications.
Official credential: Oklahoma Unlimited Electrical Contractor.
Technical exam: 100 scored questions.
Time: 240 minutes.
Passing score: 70%.
Format: open book.
Additional exam: Electrical Business and Law.
The 2023 Oklahoma Master Electrician + Electrician Calculations + NEC Combo combines advanced trade review, calculation practice, and the 2023 National Electrical Code used for the current Oklahoma electrical contractor examination.
Oklahoma Master Electrician and Contractor Paths
Identify the electrical classification that matches your experience and the scope of work you want to perform.
| Path | License Structure | What to Verify |
|---|---|---|
| Electrical Apprentice | Registered apprentice working under licensed supervision | Annual registration, supervising contractor, apprentice ratio, education, and verifiable work hours |
| Unlimited Electrical Journeyman | Statewide journey-level electrical license | 8,000 qualifying hours, including required commercial or industrial experience |
| Unlimited Electrical Contractor | Broadest and highest-ranking electrical contractor classification | 12,000 total hours, licensed Unlimited Journeyman experience, commercial or industrial experience, technical exam, and Business and Law |
| Residential Electrical Contractor | Contracting classification limited to one- and two-family dwelling work | Residential experience path, journeyman hours, ownership or officer requirements, and scope limitations |
| Limited Electrical Contractor | Alternative contractor classification with specific qualification rules | Engineering or commercial and industrial experience route and work restrictions |
| Electrical Business & Law | Separate contractor examination | 50 scored questions, 120 minutes, 70% passing, open-book references |
Research Authority and Verification
Current Oklahoma CIB contractor guidance, the PSI Candidate Information Bulletin effective September 11, 2026, Oklahoma electrical rules, and current 1 Exam Prep master-level products were reviewed for this page.
| Verified Point | Authority | Research Result |
|---|---|---|
| Highest-ranking category | Oklahoma Construction Industries Board | Electrical Contractor is identified as Oklahoma's highest-ranking electrical license category |
| Unlimited Contractor scope | Oklahoma CIB Electrical Contractor guidance | Unlimited Electrical Contractors are unlimited in the type of electrical contracting they may perform |
| Unlimited Contractor experience | Oklahoma CIB | 12,000 qualifying electrical construction hours, including 4,000 hours as a licensed Unlimited Electrical Journeyman and 6,000 commercial or industrial hours |
| Technical examination | PSI Candidate Information Bulletin | 100 scored questions, 240 minutes, 70% passing, open book |
| Current NEC edition | PSI Candidate Information Bulletin | NFPA 70, National Electrical Code, 2023 Edition, as revised and adopted by Oklahoma |
| Active contractor bond and insurance | Oklahoma Electrical Industry Regulations | $5,000 license bond and at least $50,000 commercial general liability coverage, subject to applicable waiver provisions |
Oklahoma Master Electrician Contractor Exam Prep Breakdown
The Unlimited Electrical Contractor exam contains 13 technical categories. General Electrical Knowledge, Electrical Installation Requirements, Services Feeders and Branch Circuits, Grounding and Bonding, Special Occupancies and Equipment, and Lighting and Signs each contain 10 scored questions.
Overcurrent Protection contains 9 questions. Conductors and Cables contains 8. Raceways and Boxes contains 7. Motors and Transformers contains 6. General Knowledge and Safety each contain 4, while Low Voltage, Alarms, Signaling Systems, and Communications contains 2.
This means the exam rewards balanced preparation. Services and grounding matter, but so do wiring methods, special occupancies, lighting, motor rules, OSHA safety, and electrical theory. Studying one favorite NEC article and hoping for a miracle is not a strategy. It is a suspense movie.
Primary SEO Target Oklahoma Master Electrician Contractor Exam Prep
Official Master-Level Credential Unlimited Electrical Contractor
Licensing Authority Oklahoma Construction Industries Board
Exam Administrator PSI
Technical Exam 100 scored questions
Exam Time 240 minutes
Passing Score 70%
Exam Format Open book
Current NEC Edition 2023 National Electrical Code as revised and adopted by Oklahoma
Other Technical References 29 CFR Part 1926 OSHA and Ugly's Electrical References
Electrical Business & Law 50 scored questions, 120 minutes, 70% passing, open book
How to Study for the Oklahoma Unlimited Electrical Contractor Exam
Study with the references the exam actually uses. The current PSI list identifies the 2023 NEC, OSHA construction regulations, and Ugly's Electrical References for the Unlimited Electrical Contractor technical exam.
NEC preparation: practice services, feeders, branch circuits, overcurrent protection, grounding, bonding, conductors, raceways, boxes, motors, transformers, lighting, special occupancies, and low-voltage systems.
Master-level calculations: work load calculations, conductor ampacity, voltage drop, motor circuits, transformers, box fill, raceway fill, grounding sizes, and overcurrent protection under time limits.
Open-book skill: decide what the question is testing before opening the book. The fastest page turn is the one you do not need.
Master Electrician Calculations and NEC Strategy
Contractor-level electrical calculations require a repeatable process. Identify the known information, determine the electrical system involved, locate the governing NEC rule or table, complete the math, and verify that the final answer meets the code requirement.
Oklahoma Master Electrician contractor exam-prep illustration for code navigation, calculations, grounding, conductors, motors, and transformers.
- Services and Feeders: calculated loads, demand factors, service conductors, feeder conductors, neutral loads, and overcurrent protection
- Conductors: ampacity, temperature limitations, correction factors, adjustment factors, parallel conductors, and voltage drop
- Grounding and Bonding: grounding electrode conductors, equipment grounding conductors, bonding jumpers, and separately derived systems
- Raceway and Box Fill: conduit fill, conductor counts, box volume, pull boxes, wireways, and cable-tray requirements
- Motors: full-load current, branch-circuit conductors, overloads, short-circuit protection, disconnects, and motor feeders
- Transformers: primary and secondary calculations, conductor sizing, protection, grounding, and transformer feeder applications
- Electrical Theory: Ohm's Law, power, AC theory, three-phase systems, troubleshooting, and cost-of-power concepts
Your Oklahoma Master Electrician Contractor Roadmap
Move from electrical apprentice to Unlimited Journeyman and then into Oklahoma's broad Unlimited Electrical Contractor classification.
1
Build registered apprentice experience
Work for an active licensed Electrical Contractor under proper supervision so your experience can be verified for licensing.
2
Qualify for the Unlimited Journeyman license
Accumulate 8,000 qualifying electrical construction hours, including at least 4,000 hours in commercial or industrial work. Oklahoma permits a limited amount of qualifying formal classroom education to count toward experience.
3
Pass the Unlimited Electrical Journeyman exam
Earn the statewide journey-level license and continue working for a licensed Electrical Contractor while building contractor-level experience.
4
Build Unlimited Contractor experience
Reach 12,000 qualifying electrical construction hours and document the required experience as a licensed Unlimited Electrical Journeyman.
5
Document commercial and industrial work
At least 6,000 hours must be commercial or industrial experience obtained while employed by a licensed Electrical Contractor.
6
Apply for contractor examination approval
Submit the Oklahoma CIB contractor application, experience verification, and required supporting documentation before scheduling with PSI.
7
Pass technical and Business & Law exams
Complete the Unlimited Electrical Contractor technical examination and the separate Electrical Business and Law examination.
8
Activate and maintain the license
Meet Oklahoma's firm-position requirement, bond, insurance, workers' compensation, renewal, continuing education, and other active-contractor requirements.
Oklahoma Unlimited Electrical Contractor Exam Weighting
The current PSI outline contains 100 scored questions across 13 technical subject areas.
General Electrical Knowledge10 questions
Electrical Installation Requirements10 questions
Services, Feeders and Branch Circuits10 questions
Grounding and Bonding10 questions
Special Occupancies and Equipment10 questions
Lighting and Signs10 questions
Overcurrent Protection9 questions
Conductors and Cables8 questions
Raceways and Boxes7 questions
Motors and Transformers6 questions
General Knowledge + Safety8 questions combined
Low Voltage, Alarms, Signaling and Communications2 questions
Study priority: six categories contain 10 scored questions each. Add Overcurrent Protection, Conductors and Cables, Raceways and Boxes, and Motors and Transformers, and you have most of the exam. Balanced preparation beats betting everything on one chapter.
Oklahoma Master Electrician Contractor Exam References
The current Unlimited Electrical Contractor examination is open book. Use the exact PSI-listed reference cycle during final exam preparation.
| Reference | Primary Study Use | Important Note |
|---|---|---|
| NFPA 70 National Electrical Code | Electrical installations, services, feeders, branch circuits, grounding, bonding, conductors, raceways, special occupancies, motors, transformers, lighting, and calculations | Current Oklahoma exam edition: 2023, as revised and adopted by Oklahoma |
| 29 CFR Part 1926 OSHA | Construction safety, PPE, ladders, scaffolds, excavation, tools, material handling, fall protection, and jobsite requirements | Latest available amendments or approved PSI selections |
| Ugly's Electrical References | Electrical formulas, conversions, calculations, conductor information, and quick-reference trade data | Current PSI bulletin permits any edition |
| Electrical Business & Law References | Oklahoma electrical regulations, CIB rules, fine schedule, Electrical License Act, lien law, NASCLA business guidance, and workers' compensation | Used for the separate Electrical Business and Law exam |
How to Prepare for the Oklahoma Open-Book Master-Level Exam
Build these exam-prep habits
- Use the 2023 NEC during exam-specific preparation
- Learn NEC article structure, definitions, tables, exceptions, and index navigation
- Practice services, feeders, grounding, conductors, motors, transformers, and special occupancies
- Use permitted highlighting, underlining, and permanent tabs before test day
- Practice OSHA reference lookups
- Use Ugly's for fast formulas and electrical reference data
- Complete full four-hour contractor practice exams
Avoid these exam-prep mistakes
- Bringing a newer NEC instead of the current PSI-listed 2023 NEC
- Using an NEC Handbook
- Using a spiral-bound NEC when PSI prohibits it
- Using temporary Post-it style tabs
- Writing notes into approved exam references
- Bringing unauthorized loose papers
- Trying to look up every basic electrical concept instead of learning the material
Oklahoma Master Electrician vs Unlimited Electrical Contractor
Oklahoma does not use "Master Electrician" as the official title for its broad top-level electrical contractor credential. The state uses Electrical Contractor classifications, with Unlimited Electrical Contractor serving as the broad contractor license.
This distinction matters when filling out applications and scheduling PSI exams. You may search for Oklahoma Master Electrician exam prep, but the official examination you are preparing for is the Unlimited Electrical Contractor examination.
Unlimited Electrical Contractor applicants build on their journeyman experience. The current CIB path calls for 12,000 verifiable hours of electrical construction work, 4,000 hours as a licensed Unlimited Electrical Journeyman, and 6,000 commercial or industrial hours obtained while employed by a licensed Electrical Contractor.
The contractor also takes on business responsibility. That includes estimating, contracts, job supervision, insurance, bonds, workers' compensation, apprentices, licensing displays, and compliance. The electrical work is still there. It simply brings paperwork as a new coworker.
Oklahoma Electrical License Comparison
The scope and business responsibility expand as you move from journeyman to contractor.
| License | Main Purpose | Important Difference |
|---|---|---|
| Unlimited Electrical Journeyman | Perform broad journey-level electrical work while employed by a licensed contractor | Individual journey-level credential and experience stage before Unlimited Contractor qualification |
| Unlimited Electrical Contractor | Operate and supervise broad electrical contracting activity | Highest broad electrical contractor classification with technical testing, Business and Law, bond, insurance, and company responsibility |
| Residential Electrical Contractor | Residential electrical contracting | Limited to one- and two-family dwelling scope under Oklahoma rules |
| Limited Electrical Contractor | Alternative contractor classification based on qualifying engineering or commercial and industrial experience | Has specific qualification rules and restrictions on apprentice or journeyman work |
| Electrical Business & Law | Business, legal, financial, and administrative contractor knowledge | Separate 50-question exam from the technical electrical contractor test |
Oklahoma Master Electrician Contractor Requirements
Unlimited Journeyman Foundation
Build the Required Experience
- Be at least 18 years old
- Complete the qualifying Unlimited Journeyman experience path
- Pass the Unlimited Electrical Journeyman exam
- Work for an active licensed Electrical Contractor
- Maintain verifiable experience records
- Build commercial and industrial experience
Unlimited Contractor Candidate
Oklahoma Master-Level Contractor Path
- Complete 12,000 verifiable electrical construction hours
- Document 4,000 hours as a licensed Unlimited Electrical Journeyman
- Meet the required licensed journeyman experience period
- Complete at least 6,000 commercial or industrial hours
- Pass the Unlimited Contractor technical exam
- Complete Electrical Business and Law
Active Electrical Contractor
Maintain the License
- Be an owner, partner, or officer in the electrical firm
- Maintain a $5,000 license bond unless an approved waiver applies
- Maintain at least $50,000 commercial general liability insurance unless properly waived
- Maintain workers' compensation compliance
- Complete required continuing education
- Follow apprentice and license-display requirements
Six-Week Oklahoma Master Electrician Contractor Exam Prep Plan
Build advanced code knowledge, calculation accuracy, and open-book exam speed using the current 2023 NEC reference cycle.
Week 1
Exam Setup + NEC Navigation
- Review the current PSI bulletin
- Organize 2023 NEC references
- Review NEC definitions
- Practice index navigation
- Take a diagnostic exam
Week 2
Services + Feeders
- Service calculations
- Demand factors
- Feeders
- Branch circuits
- Overcurrent protection
Week 3
Grounding + Conductors
- Grounding electrodes
- Bonding
- Conductor ampacity
- Correction factors
- Adjustment factors
Week 4
Raceways + Motors
- Conduit fill
- Box fill
- Motor calculations
- Transformers
- Equipment protection
Week 5
Special Systems + Business Law
- Hazardous and special occupancies
- Lighting and signs
- Low-voltage systems
- OSHA safety
- Bidding, contracts, finance, and licensing
Week 6
Full Exam Simulation
- 100-question technical practice exam
- Four-hour time limit
- Electrical Business and Law practice
- Review every missed question
- Repeat slow reference lookups
How Hard Is the Oklahoma Unlimited Electrical Contractor Exam?
The Oklahoma Unlimited Electrical Contractor exam is challenging because it combines advanced code navigation, electrical theory, calculations, practical installation knowledge, safety, and contractor-level judgment.
The exam contains 100 scored questions and gives you four hours. That is about 2.4 minutes per scored question. PSI can also include experimental questions, so efficient pacing matters even more than the scored count might suggest.
Open book does not mean relaxed book club. It means you can use the references, but you still have to know what you are looking for and where to find it. The best approach is to understand the electrical concept first, identify the likely NEC article or table, confirm the rule, and move on.
Timed practice is especially useful for service calculations, conductor sizing, grounding, motors, transformers, voltage drop, raceway fill, box fill, special occupancies, and overcurrent protection.
Oklahoma Master Electrician Contractor Exam Day Checklist
Do this
- Confirm your PSI appointment and exact examination title
- Bring required identification
- Bring the approved 2023 NEC
- Bring the approved OSHA reference if you plan to use it
- Bring Ugly's Electrical References if desired
- Use permitted permanent tabs and highlighting
- Keep a steady four-hour pacing plan
Do not do this
- Bring the wrong NEC edition
- Bring an NEC Handbook
- Bring a spiral-bound NEC
- Use temporary tabs
- Bring unauthorized loose papers
- Write notes into approved references
- Spend too long on one calculation or code lookup
Oklahoma Master Electrician Contractor Exam Prep Options
Oklahoma 2023 Master Electrician Study Guide
Current PSI NEC Alignment
- Oklahoma master-level contractor focus
- 12 practice exams
- 2 full final exams
- Open-book NEC navigation practice
- Advanced electrical topic review
- Built around the 2023 NEC cycle
Master + Calculations + NEC Combo
Code and Calculation Preparation
- 2023 Oklahoma Master Electrician Study Guide
- 2023 Electrician Calculations Study Guide
- 2023 National Electrical Code paperback
- Advanced calculation practice
- Code-navigation training
- Current PSI code alignment
Electrical Business & Law Course
Required Contractor Business Prep
- Bidding and estimating
- Project management and supervision
- Contracts and liens
- Financial management
- Labor, insurance, bonds, and payroll
- Oklahoma licensing requirements
Code-edition reminder: 1 Exam Prep also offers newer NEC materials for broader current-code study. The current Oklahoma Unlimited Electrical Contractor PSI bulletin still lists the 2023 NEC. Use 2023 NEC-aligned materials for final exam-specific preparation until the official reference list changes.
Oklahoma Master Electrician Study with Current PSI Exam Alignment
This Oklahoma-specific 1 Exam Prep study guide is designed for electricians preparing for the Unlimited Electrical Contractor exam, the state's broad master-level contractor credential.
• Oklahoma identifies Electrical Contractor as the highest-ranking electrical license category
• Unlimited Electrical Contractor is the broad contractor classification
• The current technical exam contains 100 scored questions
• Candidates receive 240 minutes and need 70%
• The examination is open book
• The current code reference is the 2023 NEC
• OSHA 29 CFR Part 1926 and Ugly's Electrical References are also listed
• Contractor candidates also complete Electrical Business and Law
Use the same code cycle you will use on test day, then build speed through calculations, code-navigation drills, mixed-topic practice, and full timed simulations.
Frequently Asked Questions
Oklahoma Master Electrician Licensing
Oklahoma does not use a separate broad statewide license titled Master Electrician. The Oklahoma Construction Industries Board identifies Electrical Contractor as the highest-ranking electrical license category.
The broad official credential is Unlimited Electrical Contractor. This is the Oklahoma license most closely connected to what many states or study programs call master-level electrical contracting.
Oklahoma states that Unlimited Electrical Contractors are unlimited in the type of electrical contracting they can perform within the state's licensing framework.
Experience Requirements
Current Oklahoma requirements call for 12,000 verifiable hours of electrical construction experience.
Yes. Current Oklahoma guidance requires proof of 4,000 hours of experience as a licensed Unlimited Electrical Journeyman. Oklahoma rules also describe a two-year licensed journeyman experience requirement before applying for the Unlimited Electrical Contractor license.
At least 6,000 hours must be commercial or industrial work obtained while employed by a licensed Electrical Contractor.
Yes. Oklahoma currently allows a maximum of 2,000 verified classroom hours of qualifying formal electrical education to count toward the experience requirement.
Unlimited Electrical Contractor Exam
The current PSI bulletin lists 100 scored questions.
The current technical examination allows 240 minutes, or four hours.
The current passing requirement is 70 percent.
Yes. PSI identifies the current Unlimited Electrical Contractor examination as open book.
The current PSI bulletin lists NFPA 70, National Electrical Code, 2023 Edition, as revised and adopted by the Oklahoma Uniform Building Code Commission.
The current technical reference list also includes OSHA 29 CFR Part 1926 or the approved PSI selections and Ugly's Electrical References. PSI currently permits any edition of Ugly's.
No. The current PSI bulletin states that NEC Handbooks are not allowed in the Oklahoma electrical examination center.
No. The current PSI bulletin states that spiral-bound copies of the National Electrical Code are not allowed in the test center.
Yes. Current PSI rules allow permanent tabs or indexing. Temporary tabs such as Post-it notes are not allowed.
Technical Exam Content
Subjects include general knowledge, electrical theory, installation requirements, services, feeders, branch circuits, overcurrent protection, grounding and bonding, conductors, cables, raceways, boxes, special occupancies, low-voltage systems, communications, lighting, signs, safety, motors, and transformers.
Very important. Grounding and Bonding currently accounts for 10 scored questions and also connects to services, feeders, equipment, transformers, and many other NEC topics.
Yes. Safety contains 4 scored questions, and OSHA 29 CFR Part 1926 is one of the approved references.
Yes. Motors and Transformers currently account for 6 scored questions.
Electrical Business and Law
Yes. Oklahoma contractor licensing requires the contractor examination process to include the technical trade portion and Electrical Business and Law.
The current PSI bulletin lists 50 scored questions, 120 minutes, a 70 percent passing score, and an open-book format.
Current topics include bidding and estimating, project management and supervision, contracts, financial management, labor and personnel, risk management, payroll and payroll taxes, and licensing requirements.
The current PSI list includes Oklahoma CIB administrative study aids, Oklahoma Electrical Industry Regulations, the CIB Fine Schedule, Oklahoma Electrical License Act, Oklahoma Lien Law, the NASCLA Contractors Guide to Business, Law and Project Management Basic 14th Edition, and Oklahoma Workers' Compensation material.
Active Contractor Requirements
Active electrical contractors generally must furnish a $5,000 license bond to the Oklahoma CIB unless a qualifying waiver applies.
Current rules generally require at least $50,000 combined single-limit commercial general liability coverage for active electrical contractor status, subject to the current waiver provisions.
Yes. Oklahoma Electrical Journeymen and Electrical Contractors currently complete 12 hours of continuing education during the 36 months before license expiration, including six hours of adopted-code updates.
Current CIB and PSI guidance states that electrical candidates must wait 30 days before retesting.
1 Exam Prep
The current Oklahoma-specific guide includes 12 practice exams and 2 full final exams designed to improve open-book navigation, code application, pacing, and contractor-level electrical exam performance.
Yes. The 2023 Oklahoma Master Electrician + Electrician Calculations + National Electrical Code Combo combines the Oklahoma master study guide, calculation training, and the 2023 NEC used for current exam-specific preparation.
Yes. 1 Exam Prep offers an Oklahoma Electrical Business and Law Online Exam Prep Course as well as business-and-law practice questions and complete reference packages.
Watch: Oklahoma Electrician 2026 Licensing Guide
Watch this related 1 Exam Prep Oklahoma electrician video for guidance on Oklahoma electrical licensing, apprenticeship, journeyman requirements, contractor qualification, experience documentation, NEC preparation, and the path toward the Unlimited Electrical Contractor license.
Oklahoma master-level exam-prep tip: use the video to understand the licensing path, then prepare for the Unlimited Electrical Contractor technical exam with the official PSI-listed 2023 NEC, OSHA, and Ugly's references.
Oklahoma Master Electrician Contractor Exam Prep Resources
Combine current Oklahoma CIB and PSI information with structured 1 Exam Prep master-level electrical study materials. Recheck the official bulletin before testing because exam references and licensing rules can change.
Oklahoma 2023 Master Electrician Study Guide 2023 Master Calculations + NEC Combo Oklahoma Unlimited Electrical Contractor Course Oklahoma Electrical Business & Law Course Electrical Business & Law Complete Pass Package Electrical Business & Law Practice Questions Oklahoma Unlimited Contractor All-Inclusive Package Oklahoma CIB Electrical Contractor Requirements Oklahoma CIB Journeyman Requirements Oklahoma Electrical Industry Information Oklahoma CIB Testing Information Contact 1 Exam Prep
Ready for Oklahoma Master Electrician Contractor Exam Prep?
Build stronger 2023 NEC knowledge, faster open-book reference navigation, better calculation accuracy, and more confidence with services, feeders, grounding, conductors, raceways, special occupancies, lighting, motors, transformers, safety, and Oklahoma contractor business requirements.
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