Oklahoma Construction Industries Board • PSI Unlimited Electrical Contractor • 100 Questions • 240 Minutes • 70% Passing • 2023 NEC • Electrical Business and Law
Preparing for Oklahoma's advanced electrical contractor exams? This guide explains the official Unlimited Electrical Contractor credential, licensing experience, PSI trade examination, Electrical Business and Law test, NEC reference books, calculations, six-week study plan, and Oklahoma-related products from Contractor Exam Preps.
Electricians know that a successful electrical system requires more than wires, switches, and an optimistic flip of the breaker.
Every installation must handle electrical loads safely.
Conductors must be properly sized.
Grounding and bonding systems must be installed correctly.
Overcurrent protection must meet code requirements.
Services, feeders, branch circuits, motors, transformers, lighting, and control systems all need careful attention.
For contractors, technical work is only part of the responsibility.
Contractors also estimate projects, organize employees, follow licensing laws, maintain insurance, supervise electrical work, and manage business risks.
Oklahoma recognizes this higher level of responsibility through its Electrical Contractor licensing categories.
Oklahoma does not use one separate statewide license category officially called Master Electrician.
Instead, the Oklahoma Construction Industries Board licenses electrical professionals as apprentices, journeymen, and electrical contractors.
The highest electrical contractor categories include Unlimited Electrical Contractor, Residential Electrical Contractor, and Limited Electrical Contractor.
The expression Master Electrician is commonly used for advanced technical study and contractor-level exam preparation.
Contractor Exam Preps uses this terminology in its Oklahoma Master Electrician study books.
This guide focuses primarily on the Unlimited Electrical Contractor pathway, which most closely fits the advanced contractor-level search topic.
The Oklahoma Construction Industries Board, commonly called CIB, regulates electrical licensing.
The Board reviews experience records and determines who is eligible to take contractor examinations.
PSI administers the required examinations.
Applicants cannot simply register for a licensing examination without first receiving the required authorization.
After the Board approves an applicant, the applicant schedules testing directly through PSI.
The official PSI Candidate Information Bulletin effective September 11, 2026 lists the Unlimited Electrical Contractor examination as follows:
The examination tests knowledge of electrical conductors, equipment, raceways, installation methods, electrical theory, services, feeders, grounding, safety, motors, controls, and related systems.
Commercial and industrial electrical knowledge is important because the Unlimited Electrical Contractor classification covers a wider scope than a residential license.
Electrical contractor candidates also need to prepare for Oklahoma's separate Electrical Business and Law examination.
The current official PSI bulletin lists:
The exam covers bidding, estimating, supervision, contracts, financial management, labor responsibilities, insurance, bonds, payroll, taxes, and licensing rules.
Contractors who understand electrical work but ignore the business side can encounter expensive problems.
Contracts, insurance, payments, and proper licensing deserve serious study.
Oklahoma currently uses the 2023 National Electrical Code, as adopted and amended by the Oklahoma Uniform Building Code Commission.
The 2023 NEC took effect in Oklahoma on September 14, 2024.
Oklahoma electrical licensing examinations began using 2023 NEC questions after the state's code transition.
The September 2026 PSI bulletin continues to list the 2023 NEC as the approved code edition.
This is important because newer 2026 NEC-based study products are available from Contractor Exam Preps.
The newer products can support updated-code learning and calculation practice.
However, the 2026 NEC is not the current PSI-approved code edition for Oklahoma electrical trade examination questions.
For direct Oklahoma exam preparation, study the 2023 NEC and the Oklahoma amendments.
There are thirteen official subjects totaling 100 scored questions.
These figures come from the actual official PSI table, rather than older third-party outlines that may group subjects differently.
The General Electrical Knowledge category contains ten questions.
Study voltage, current, resistance, power, and electrical circuit behavior.
Practice Ohm's law and electrical power calculations.
Learn the difference between series and parallel circuits.
Review alternating current and three-phase electrical theory.
Study electrical troubleshooting, test procedures, temporary wiring, and NEC definitions.
Knowing the formulas is useful.
Knowing how to apply them to a real electrical problem is even better.
This subject contains ten questions.
Review service conductors, service equipment, feeder installations, branch circuits, and outside distribution systems.
Study electrical load calculations and conductor selection.
Practice voltage drop calculations and understand when voltage drop should be considered.
Review specialized heating, air-conditioning, and refrigeration circuits.
Grounding and Bonding contains ten questions.
Study NEC Article 250.
Understand grounding electrode systems, equipment grounding conductors, and bonding connections.
Practice sizing grounding electrode conductors and equipment grounding conductors.
Understand the purpose of an effective ground-fault current path.
Review service bonding and separately derived systems.
Grounding and bonding mistakes can make electrical equipment unsafe.
This is a subject worth getting right on the test and in the field.
This subject contains nine questions.
Study fuses, circuit breakers, short-circuit protection, overload protection, and device ratings.
Review NEC Article 240.
Understand conductor protection and the relationship between load, conductor ampacity, and protective devices.
Conductors and Cables contains eight questions.
Review conductor materials, insulation, ampacity, wiring types, cable installation, underground conductors, and temperature conditions.
Study armored cable, metal-clad cable, nonmetallic cable, service entrance cable, and underground feeder cable.
Practice NEC table lookups.
Raceways and Boxes contains seven questions.
Study rigid metal conduit, electrical metallic tubing, intermediate metal conduit, PVC conduit, flexible raceways, pull boxes, junction boxes, and fittings.
Practice conduit fill and box fill calculations.
Review wiring methods and NEC Chapter 9.
This subject contains ten questions.
Review hazardous locations, commercial garages, health care facilities, assembly occupancies, mobile homes, RV parks, swimming pools, hot tubs, and other specialized electrical installations.
Study how special locations create additional NEC requirements.
Lighting and Signs contains ten questions.
Review luminaire installation, fixture grounding, recessed lighting, low-voltage lighting systems, electrical signs, and lighting equipment requirements.
Understand when equipment ratings and location rules change an installation.
This subject contains two questions.
Review limited-power systems, communications wiring, fiber optics, remote controls, alarms, emergency system wiring, and related electrical requirements.
The count is small, but candidates should recognize the relevant NEC chapters and installation concepts.
Motors and Transformers contains six questions.
Review NEC Articles 430 and 450.
Study motor branch circuits, protection, feeders, disconnecting means, transformers, and related calculations.
Practice motor full-load current questions and transformer sizing concepts.
Electrical Installation Requirements contains ten questions.
Study approved wiring methods, equipment installation requirements, electrical protection, and installation practices involving higher voltage systems.
Read code wording carefully when a question involves equipment ratings, installation conditions, and exceptions.
Safety contains four questions.
Study OSHA construction safety, protective equipment, excavation precautions, ladders, scaffolds, tools, electrical hazards, emergency plans, and workplace safety.
Review applicable OSHA 29 CFR Part 1926 requirements.
Oklahoma requires 12,000 verifiable hours of qualifying electrical construction experience for Unlimited Electrical Contractors.
The experience must include 4,000 hours working as a licensed Unlimited Electrical Journeyman.
The Board also requires 6,000 commercial or industrial electrical work hours obtained while employed by a licensed Electrical Contractor.
The state's application instructions specify at least two years as a licensed Unlimited Electrical Journeyman.
Up to 2,000 qualifying hours may be satisfied through approved formal electrical education.
Applicants should carefully document employers, dates, work types, and actual hours.
Applicants must be at least eighteen years old.
The current posted Oklahoma electrical license application lists a total contractor application amount of $330, which includes a $300 license fee and a $30 processing fee.
Applicants should confirm the current fee with CIB before payment.
Once approved, candidates schedule the required examinations through PSI.
Passing the tests does not automatically authorize electrical contracting before the contractor license is properly activated.
To activate an Oklahoma Electrical Contractor license, CIB generally requires a $5,000 corporate surety bond.
It also requires proof of at least $50,000 commercial general liability insurance.
Workers' compensation compliance or an applicable approved exemption may also be required.
The Board provides instructions for filing the necessary bond and insurance documents.
Without current coverage and an active license, a contractor must not perform contracting work that requires an active license.
Beginning with the current requirements, Electrical Contractors and Journeymen must complete 12 hours of approved continuing education every three years.
Six hours must cover code updates and adopted code revisions.
The remaining six hours may include approved electrical theory, calculations, wiring methods, grounding, bonding, transformers, controls, alternative energy, safety, and licensing topics.
License holders should confirm approved courses and renewal deadlines with the Board.
Contractor Exam Preps offers the 2026 Oklahoma Master Electrician Super Combo, which includes an Oklahoma study guide, electrical calculations guide, 2026 NEC paperback with tabs, and flash cards.
The 2026 Oklahoma Master Electrician Study Guide and NEC Combo includes exam-style practice and code navigation resources.
The Oklahoma Master Electrician Flash Card Combo provides a practice-focused study format.
Contractor Exam Preps also sells a 2023 NEC-based Master Electrician Online Test Success Kit for general electrical review.
Check individual product descriptions carefully because the general 2023 packages may contain material aimed at other states.
Start by checking your license category and confirming your experience.
Review the latest PSI examination bulletin.
Study all thirteen Unlimited Electrical Contractor trade subjects.
Use the 2023 NEC and Oklahoma amendments for examination-specific questions.
Practice electrical calculations and NEC reference lookups.
Study Business and Law as a separate subject.
Complete timed practice exams using 100 questions over 240 minutes for the trade examination and 50 questions over 120 minutes for Business and Law.
Review missed answers until you understand the reasoning.
The goal is not to memorize every page of the NEC.
The goal is to understand the code and know where to find the right rule when you need it.
Important Oklahoma 2026 Electrical Contractor Update: The September 11, 2026 PSI bulletin lists 100 scored items, 240 minutes, and 70% passing for Unlimited Electrical Contractor. The separate Electrical Business and Law exam contains 50 scored items, 120 minutes, and 70% passing. Each exam portion currently costs $92 through PSI. Oklahoma's adopted electrical code remains the 2023 NEC with state amendments. The state's contractor-level credential is Electrical Contractor, not a separate license officially named Master Electrician. The current Unlimited Contractor blueprint has thirteen official categories. Contractor Exam Preps sells newer 2026 NEC-based Oklahoma Master Electrician study packages, but these should not replace the 2023 NEC currently specified by PSI. Oklahoma also requires 12 continuing education hours every three years for electrical journeymen and contractors under its current rules.
An Oklahoma Master Electrician Contractor is a common way to describe an experienced electrical professional preparing for a higher-level contractor license.
The official state credential is Electrical Contractor.
Oklahoma offers Unlimited, Residential, and Limited Electrical Contractor categories.
Unlimited Electrical Contractors can contract for a broad range of electrical work within the requirements of state law.
Electrical Contractors must be an owner, partner, or officer in the electrical firm.
They must satisfy experience and examination requirements, activate their license, and maintain required business compliance.
Common study title: Master Electrician.
Official Oklahoma license: Unlimited Electrical Contractor.
Licensing authority: Construction Industries Board.
Exam vendor: PSI.
Current trade code: 2023 NEC.
Separate examination: Electrical Business and Law.
| Requirement | Oklahoma Details | Preparation |
|---|---|---|
| State | Oklahoma | Follow CIB rules. |
| Official Credential | Unlimited Electrical Contractor | Use official license category. |
| Common Study Term | Master Electrician | Understand terminology. |
| Licensing Board | Construction Industries Board | Apply through CIB. |
| Exam Provider | PSI | Schedule after approval. |
| Exam Bulletin | September 11, 2026 | Read current bulletin. |
| Applicant Age | 18 or Older | Confirm eligibility. |
| Unlimited Contractor Experience | 12,000 Hours | Document qualifying work. |
| Licensed Journeyman Experience | 4,000 Hours | Unlimited Journeyman required. |
| Licensed Journeyman Duration | At Least Two Years | Verify license dates. |
| Commercial or Industrial Work | 6,000 Hours | Document job types. |
| Educational Credit | Up to 2,000 Hours | Provide approved transcripts. |
| Firm Role | Owner, Partner, or Officer | Verify business structure. |
| Trade Examination | Unlimited Electrical Contractor | PSI. |
| Trade Questions | 100 | Thirteen official subjects. |
| Trade Time | 240 Minutes | Four hours. |
| Trade Passing | 70% | 70 correct answers. |
| Trade PSI Fee | $92 | Per exam portion. |
| Electrical Business and Law | Separate Examination | Study Oklahoma rules. |
| Business Questions | 50 | Review contracts and finance. |
| Business Time | 120 Minutes | Two hours. |
| Business Passing | 70% | 35 correct answers. |
| Business PSI Fee | $92 | Per exam portion. |
| Combined PSI Fees | $184 | Excludes state application. |
| Exam Format | Open Book | Approved references only. |
| NEC Edition | 2023 | Oklahoma amendments. |
| NEC Handbook | Not Allowed | Use permitted NEC format. |
| Spiral-Bound NEC | Not Allowed | Use allowed binding. |
| OSHA Reference | 29 CFR Part 1926 | Approved trade reference. |
| Ugly's Electrical References | Allowed | Formula and table review. |
| Oklahoma State Rules | Title 158, Chapter 40 | Business and Law study. |
| Oklahoma Electrical License Act | Title 59, Chapter 40A | State licensing law. |
| NASCLA Business Book | Basic 14th Edition | Approved Business and Law reference. |
| Reference Tabs | Permanent Only | No temporary tabs. |
| Trade Retake Waiting Period | 30 Days | PSI electrical exam rules. |
| State Contractor Application | $330 on Posted Form | Confirm latest fee. |
| Surety Bond | $5,000 | Required for normal activation. |
| General Liability | $50,000 Minimum | Submit insurance certificate. |
| Workers' Compensation | Compliance Required | Coverage or accepted exemption. |
| Continuing Education | 12 Hours Every 3 Years | Six code and six other approved. |
| Detail | Examination | Information |
|---|---|---|
| Official Trade Exam | Unlimited Contractor | Unlimited Electrical Contractor |
| Testing Company | PSI | State-authorized examination |
| Trade Questions | Trade | 100 |
| Trade Duration | Trade | 240 Minutes |
| Trade Passing Score | Trade | 70% |
| Trade Passing Answers | Trade | 70 |
| Trade Reference Format | Trade | Open Book |
| Electrical Code | Trade | 2023 NEC |
| Trade Cost | PSI | $92 |
| Business Exam | Business and Law | Electrical Business and Law |
| Business Questions | Business and Law | 50 |
| Business Duration | Business and Law | 120 Minutes |
| Business Passing | Business and Law | 70% |
| Business Correct Answers | Business and Law | 35 |
| Business Exam Cost | PSI | $92 |
| Trade Subject Count | Trade | 13 |
| General Knowledge | Trade | 4 Questions |
| General Electrical Knowledge | Trade | 10 Questions |
| Electrical Installation Requirements | Trade | 10 Questions |
| Services and Feeders | Trade | 10 Questions |
| Overcurrent Protection | Trade | 9 Questions |
| Grounding and Bonding | Trade | 10 Questions |
| Conductors and Cables | Trade | 8 Questions |
| Raceways and Boxes | Trade | 7 Questions |
| Special Occupancies and Equipment | Trade | 10 Questions |
| Low-Voltage and Communications | Trade | 2 Questions |
| Lighting and Signs | Trade | 10 Questions |
| Safety | Trade | 4 Questions |
| Motors and Transformers | Trade | 6 Questions |
| State Experience Requirement | Licensing | 12,000 Hours |
| Unlimited Journeyman Experience | Licensing | 4,000 Hours |
| Commercial or Industrial Experience | Licensing | 6,000 Hours |
| Active Contractor Bond | Licensing | $5,000 |
| Liability Insurance | Licensing | $50,000 Minimum |
| Continuing Education | Licensing | 12 Hours Every 3 Years |
Unlimited trade: 100 questions, 240 minutes, 70%.
Electrical Business and Law: 50 questions, 120 minutes, 70%.
Code: 2023 NEC with Oklahoma amendments.
Fee: $92 for each examination portion.
Permits, inspections, structural integrity, estimating, and general trade responsibilities. Understand how electrical contracting fits within construction projects and inspection requirements.
Voltage, current, resistance, power, AC circuits, three-phase theory, testing, troubleshooting, temporary wiring, NEC terminology, cranes, hoists, and elevators.
Approved installation methods, equipment requirements, higher-voltage equipment, listed products, and code-compliant construction practices.
Service equipment, outside feeders, branch circuits, voltage drop, heating circuits, air-conditioning equipment, and distribution systems.
Fuses, circuit breakers, overcurrent devices, NEC Article 240, conductor protection, and permitted device ratings.
NEC Article 250, grounding electrode conductors, equipment grounding conductor sizing, grounding electrodes, bonding, and effective fault-current paths.
Conductor sizing, cables, underground wiring, insulation ratings, conductor selection, service entrance cable, metal-clad cable, and other wiring types.
Conduit systems, rigid metal conduit, EMT, PVC, flexible conduit, raceway fill, box fill, fittings, pull boxes, and junction boxes.
Hazardous locations, garages, fuel-dispensing areas, health care installations, assembly locations, pools, spas, RV parks, and specialized wiring rules.
Low-voltage circuits, fire alarms, fiber optics, communications systems, emergency wiring, and signaling equipment.
Luminaires, fixture wiring, fixture grounding, low-voltage lighting, signs, recessed lights, and commercial lighting installations.
OSHA construction regulations, ladders, scaffolds, protective equipment, workplace hazards, emergency plans, and safe work practices.
Motor branch circuits, industrial motors, feeder transformers, transformer installations, and associated NEC requirements.
Total: 100 scored questions.
Most heavily represented: Six subjects each contain 10 questions.
Passing requirement: 70 correct answers.
Begin with the September 2026 PSI bulletin.
Confirm that your examination is the Unlimited Electrical Contractor test.
Review the official thirteen trade categories.
Gather the 2023 NEC, OSHA construction reference, and Ugly's Electrical References.
Study the NEC article structure.
Learn where to find service requirements, grounding rules, conductor tables, wiring methods, and motor provisions.
Practice electrical calculations every week.
Include general electrical theory and three-phase calculations.
Review special occupancies, lighting, and commercial electrical topics.
Study Oklahoma Electrical Business and Law separately.
Complete timed practice examinations.
Use Oklahoma Master Electrician practice exams and flash cards for repeated review.
Use the Oklahoma Master Electrician Super Combo for broader calculations and advanced electrical study.
Trade study: 100 questions, 240 minutes.
Business study: 50 questions, 120 minutes.
Current code: 2023 NEC with Oklahoma amendments.
Practice: Learn formulas and fast reference navigation.
The Unlimited Electrical Contractor exam requires understanding how services, feeders, panels, branch circuits, protective devices, grounding, and equipment work together.
Simplified educational diagram. Real systems must comply with the adopted NEC, approved electrical design, equipment instructions, and required inspections.
Review Unlimited, Residential, and Limited Electrical Contractor categories and confirm which scope fits your goals.
Document 12,000 qualifying hours, including the necessary Unlimited Journeyman and commercial or industrial experience.
Prepare employer verifications, license history, any approved education transcripts, and the correct state application.
Submit the electrical contractor application and required fee. Wait for examination approval.
Study the current code, OSHA 29 CFR Part 1926, Ugly's Electrical References, and Oklahoma electrical laws and rules.
Take the PSI 100-question trade examination and earn at least 70% within 240 minutes.
Complete the separate 50-question, 120-minute PSI Business and Law examination with at least 70%.
Complete required bonding, liability insurance, applicable workers' compensation documentation, firm details, renewal, and continuing education.
These are the thirteen official PSI categories, based on 100 scored trade questions.
Official total: 100 questions and 100%.
Time: 240 minutes.
Passing: 70 correct answers.
Code: 2023 NEC with Oklahoma amendments.
| Reference Book | Edition | Exam Use |
|---|---|---|
| National Electrical Code, NFPA 70 | 2023 with Oklahoma Amendments | Allowed for Unlimited Electrical Contractor trade exam. |
| Code of Federal Regulations, OSHA 29 CFR Part 1926 | Latest Applicable Amendments | Allowed electrical trade reference. |
| PSI OSHA Part 1926 Selections | Latest Available | Alternative OSHA trade reference. |
| Ugly's Electrical References, George V. Hart | Any Edition Under Bulletin | Allowed formulas and electrical reference information. |
| Oklahoma CIB Unofficial Administrative Rules and Courtesy Exam Study Aids | Current | Electrical Business and Law. |
| Oklahoma Electrical Industry Regulations | OAC Title 158, Chapter 40 | Electrical Business and Law. |
| Oklahoma CIB Fine Schedule | OAC Title 158, Chapter 10 | Electrical Business and Law. |
| Oklahoma Electrical License Act | Title 59, Chapter 40A | Electrical Business and Law. |
| Oklahoma Lien Law | Title 42, Chapter 3 | Electrical Business and Law. |
| NASCLA Contractors Guide to Business, Law and Project Management | Basic 14th Edition | Electrical Business and Law. |
| Oklahoma Workers' Compensation Act | Title 85A, Chapter 1 | Electrical Business and Law. |
| 2026 Oklahoma Master Electrician Study Guide | 2026 NEC Based | Preparation only, not listed as trade exam-room reference. |
| 2026 NEC Paperback With Tabs | 2026 | Home study and updated-code review, not approved current code edition. |
| 2023 Master Electrician Online Test Success Kit | 2023 NEC Based | General electrical preparation, not an exam-room reference. |
Trade examination: 2023 NEC, OSHA Part 1926, and Ugly's Electrical References.
Business examination: Oklahoma laws and rules, NASCLA Basic 14th Edition, and other listed legal references.
Reference restriction: No NEC Handbooks or spiral-bound NEC copies.
Tabs: Permanent tabs only.
The Unlimited Electrical Contractor test is open book.
That gives candidates access to approved references.
However, there are strict rules.
Practice with the correct codebook before testing.
Learn how to locate articles, tables, definitions, and exceptions.
Study the 2023 NEC rather than relying only on a newer 2026 edition.
Prepare for the Business and Law test with its own state-approved references.
Oklahoma Unlimited Electrical Contractors are authorized to perform a broad range of electrical contracting work within the requirements of state law.
The scope includes planning, installation, repair, and alteration of electrical conductors, fixtures, appliances, electrical apparatus, raceways, conduit, and related electrical equipment.
It covers systems using electrical energy for light, heat, power, data, and communications.
The Unlimited classification is broader than the Residential Electrical Contractor classification, which is limited to qualifying one- and two-family dwellings.
An active Unlimited Electrical Contractor must maintain the required firm relationship, bond, insurance, and other licensing obligations.
Official credential: Unlimited Electrical Contractor.
Work: Electrical contracting within the unrestricted classification scope.
Business role: Owner, partner, or officer of the electrical firm.
Activation: Requires applicable CIB bond, insurance, and documentation.
Safety and code: Oklahoma-adopted NEC and applicable laws.
| Credential | Purpose | Difference |
|---|---|---|
| Master Electrician | Advanced electrical study terminology. | Not Oklahoma's separate official statewide license title. |
| Unlimited Electrical Contractor | Broad electrical contracting. | 12,000 experience hours and contractor qualifications. |
| Residential Electrical Contractor | One- and two-family dwelling electrical contracting. | Restricted scope and different experience pathway. |
| Limited Electrical Contractor | Restricted contractor category. | Special engineering or experience qualification; restrictions apply. |
| Unlimited Electrical Journeyman | Individual journeyman electrical work. | Separate journeyman requirements and supervised work role. |
| Residential Electrical Journeyman | Journeyman work in qualifying dwellings. | Residential scope. |
| Electrical Business and Law | Business and contractor regulation examination. | Separate PSI exam, 50 questions, 120 minutes. |
| Alarm Endorsement | Specified alarm-system work. | Additional endorsement rules and background checks may apply. |
100 Questions • 240 Minutes • 70%
50 Questions • 120 Minutes • 70%
12,000 Hours • $5,000 Bond • $50,000 Liability
The Oklahoma Unlimited Electrical Contractor examination is challenging because it tests electrical theory, practical electrical knowledge, code requirements, installation methods, and calculations.
There are 100 questions and a four-hour time limit.
Candidates have an average of two minutes and twenty-four seconds per question.
That is enough time for a prepared electrician to make targeted reference lookups.
It is not enough time to learn the NEC from scratch during the examination.
The exam covers residential, commercial, industrial, and special electrical installations.
General electrical theory, special occupancies, lighting, and grounding each deserve attention.
Business and Law creates a separate challenge.
Contracting requires knowledge of agreements, estimates, jobsite management, insurance, payroll, and legal responsibilities.
Strong field experience helps, but structured examination preparation is also important.
A solid strategy is to learn the official blueprint, practice calculations, use the approved references regularly, and complete timed practice tests.
These products are listed on ContractorExamPreps.com and relate to Oklahoma contractor-level electrical preparation.
Check the exact product contents and code edition before purchasing.
Oklahoma Study Guide • Calculations • NEC • Flash Cards
Best for: Candidates wanting an Oklahoma-focused package with calculations, exam-style study, code navigation, and flash cards.
Important: This package is based on the 2026 NEC. Oklahoma PSI currently specifies the 2023 NEC for trade examination questions.
Study Guide • NEC Paperback • Tabs • Practice Exams
Best for: Candidates wanting a physical Oklahoma electrical study guide and NEC reference for home study.
Important: The included 2026 NEC is a newer study edition, not the current 2023 examination code.
12 Practice Exams • 2 Final Exams • Flash Cards
Best for: Repeated question practice and quick-review study sessions.
Important: This is also based on the 2026 NEC. Use the 2023 NEC for current Oklahoma PSI-specific code preparation.
Additional 2023 NEC study: 2023 Master Electrician Online Test Success Kit.
Code edition reminder: Oklahoma exam questions currently follow the 2023 NEC with Oklahoma amendments.
Business and Law: Review Oklahoma-specific state rules and the NASCLA Basic 14th Edition reference.
Exam-room books: Follow PSI's specific approved reference list, not a study package's entire contents.
Oklahoma Master Electrician exam preparation product from ContractorExamPreps.com.
The image loads directly from the featured product image on Contractor Exam Preps. It is a study-product illustration, not a state-issued electrical contractor license.
The pictured 2026 NEC is for current-code study and does not replace the 2023 NEC required for Oklahoma's current PSI electrical trade exams.
Unlimited Electrical Contractor • PSI • Construction Industries Board • 2023 NEC • Trade Exam • Business and Law
Oklahoma Master Electrician Licensing
No. Oklahoma officially licenses electrical contractors in Unlimited, Residential, and Limited categories. Master Electrician is commonly used for advanced contractor-level electrical study.
The Oklahoma Construction Industries Board regulates and issues electrical licensing credentials.
Unlimited Electrical Contractor is the broad contractor classification. Oklahoma also offers Residential and Limited Electrical Contractor categories.
The Board requires 12,000 verifiable hours of qualifying electrical construction experience.
Applicants must document 4,000 hours of experience as a licensed Unlimited Electrical Journeyman and meet the applicable two-year journeyman duration requirement.
Oklahoma requires 6,000 commercial or industrial electrical work hours obtained while employed by a licensed Electrical Contractor.
Yes. Up to 2,000 hours may be satisfied through approved formal electrical education when properly documented.
PSI Unlimited Electrical Contractor Exam
The September 2026 PSI bulletin lists 100 scored questions.
The Unlimited Electrical Contractor examination allows 240 minutes, or four hours.
The required passing score is 70%, which means 70 correct answers out of 100.
Yes. The exam is open book, but only approved references may be used under PSI rules.
The official 2026 PSI bulletin specifies the 2023 NEC, as adopted and amended by the Oklahoma Uniform Building Code Commission.
No. The 2026 NEC is useful for updated-code study, but Oklahoma's current PSI trade exam identifies the 2023 NEC as the approved code edition.
No. The current PSI bulletin specifically prohibits NEC Handbooks and spiral-bound copies of the NEC.
Trade Topics and Reference Books
There are thirteen official subjects totaling 100 questions.
Grounding and Bonding contains ten questions.
Yes. Unlimited Electrical Contractor testing includes general electrical theory, services, feeders, installations, special occupancies, motors, transformers, lighting, and related advanced electrical subjects.
The official current PSI outline lists ten Lighting and Signs questions.
Yes. Electrical calculations are relevant to general electrical theory, services, feeders, conductor sizing, raceway fill, box fill, motors, and transformers.
Yes. The Oklahoma PSI bulletin permits Ugly's Electrical References by George V. Hart as an approved trade examination reference.
Yes. PSI permits permanent reference tabs. Temporary Post-it tabs, handwritten notes, and loose reference papers are not permitted.
Electrical Business and Law
Yes. Contractor candidates prepare for a separate PSI Electrical Business and Law examination covering business operations, contracts, licensing, finance, and other legal responsibilities.
There are 50 scored questions, with 120 minutes allowed and a 70% passing requirement.
The official reference list includes NASCLA Contractors Guide to Business, Law and Project Management, Basic 14th Edition, together with Oklahoma-specific statutes and regulations.
Study Oklahoma Electrical Industry Regulations, the Electrical License Act, CIB administrative rules, lien law, and the workers' compensation materials listed by PSI.
Applications, Costs, and Retesting
No. The Oklahoma Construction Industries Board determines eligibility before candidates can schedule their licensing examinations.
The September 2026 PSI bulletin lists $92 per examination portion.
The two PSI portions total $184 at the current published rate. This excludes state application fees and study materials.
The current PSI bulletin requires a 30-day waiting period between electrical examination attempts.
The posted CIB electrical application lists $330 for an Electrical Contractor application. Confirm the current fee with the Board before applying.
Bonding, Insurance, and Renewal
Yes. Oklahoma generally requires a $5,000 corporate surety bond to activate an Electrical Contractor license, subject to any Board-approved waiver or exemption that applies.
CIB requires a certificate showing at least $50,000 in commercial general liability insurance for a normally activated contractor license.
Under current Oklahoma requirements, electrical contractors and journeymen complete twelve approved continuing education hours during each three-year period.
Six hours must cover code updates and revisions adopted by the Oklahoma Uniform Building Code Commission.
Contractor Exam Preps Study Products
Yes. The store lists Oklahoma-specific Master Electrician study guides, NEC combos, electrician calculations materials, and flash-card packages.
It includes a 2026 Oklahoma Master Electrician Study Guide, 2026 Electrician Calculations Study Guide, 2026 NEC paperback with tabs, and 2026 Master Electrician Flash Cards.
Yes. The current Oklahoma study guide products describe twelve practice exams and two final examinations.
Yes. Contractor Exam Preps lists general 2023 NEC-based Master Electrician products, including an Online Test Success Kit. Confirm the state coverage because some older packages focus on other jurisdictions.
No. Study products support preparation but do not guarantee passing results, Board authorization, license activation, or contractor business approval.
Watch this related 1ExamPrep video about Master Electrician examination preparation, electrical theory, NEC study, calculations, reference navigation, and exam strategies.
The video provides general advanced electrical study guidance relevant to Oklahoma Electrical Contractor candidates.
It is not an official Oklahoma PSI examination briefing.
Oklahoma reminder: The 2026 materials discussed in general Master Electrician preparation are newer than the 2023 NEC currently listed for Oklahoma PSI electrical code questions.
Video creator: 1ExamPrep.
Topic: Master Electrician exam preparation.
Relevant subjects: NEC navigation, electrical calculations, theory, and advanced electrical study.
Oklahoma official license: Unlimited Electrical Contractor.
Oklahoma PSI trade exam: 100 questions, 240 minutes, 70% passing.
Current Oklahoma PSI code: 2023 NEC.
Use the Construction Industries Board and PSI to verify licensing requirements, code editions, exam rules, fees, and reference books.
Use Contractor Exam Preps for Oklahoma Master Electrician study guides, electrical calculations, NEC practice books, flash cards, and related advanced electrical preparation.
License: Unlimited Electrical Contractor.
Trade exam: 100 questions, 240 minutes, 70%.
Business exam: 50 questions, 120 minutes, 70%.
Code: 2023 NEC with Oklahoma amendments.
Store books: Oklahoma study guides, calculations, NEC materials, flash cards, and 2023 general electrical study products.
Preparing for Oklahoma's advanced Electrical Contractor examinations is an important goal for experienced electricians who want to take greater responsibility for electrical projects and operate a contracting business.
Electrical contracting requires technical knowledge, safe installation practices, and responsible business management.
Electricians must understand services, feeders, branch circuits, grounding, bonding, conductor sizing, raceways, motors, lighting, special occupancies, and electrical safety.
Contractors must also understand estimates, contracts, employees, insurance, bonds, and licensing rules.
Oklahoma regulates electrical contractors through the Construction Industries Board.
The state does not have one separate statewide license officially called Master Electrician.
Instead, it licenses Unlimited, Residential, and Limited Electrical Contractors.
The Unlimited Electrical Contractor classification is the broad contractor-level credential relevant to this guide.
Contractor Exam Preps uses the term Master Electrician in its Oklahoma study materials because it is familiar to electricians seeking advanced electrical knowledge.
Applicants for Unlimited Electrical Contractor must meet substantial work experience requirements.
Oklahoma requires 12,000 verifiable hours of qualifying electrical construction work.
That experience must include 4,000 hours as a licensed Unlimited Electrical Journeyman.
The state's application also requires at least two years in that licensed journeyman status.
Additionally, 6,000 hours must involve commercial or industrial electrical work obtained while employed by a licensed Electrical Contractor.
Up to 2,000 hours may be credited for approved formal electrical education.
Applicants must document their work history and submit the required application to the Board.
PSI administers the trade and Business and Law examinations after state authorization.
The official September 2026 PSI bulletin lists 100 scored questions for Unlimited Electrical Contractor.
Candidates have 240 minutes to complete the exam.
The passing score is 70%, equal to 70 correct answers.
The examination is open book and tests thirteen official subjects.
General Knowledge contains four questions.
General Electrical Knowledge contains ten questions.
Electrical Installation Requirements contains ten questions.
Services, Feeders, and Branch Circuits contains ten questions.
Overcurrent Protection contains nine questions.
Grounding and Bonding contains ten questions.
Conductors and Cables contains eight questions.
Raceways and Boxes contains seven questions.
Special Occupancies and Equipment contains ten questions.
Low Voltage, Alarms, Signaling Systems, and Communications contains two questions.
Lighting and Signs contains ten questions.
Safety contains four questions.
Motors and Transformers contains six questions.
Together, these thirteen subjects total 100 questions.
Because several categories contain ten questions, candidates should prepare across the entire blueprint rather than studying only one subject.
General electrical theory is important because it supports calculations and practical code application.
Students should understand voltage, current, resistance, power, single-phase electricity, three-phase electricity, and basic troubleshooting.
Electrical calculations are relevant to services, feeders, conductor sizing, motors, transformers, raceway fill, and box fill.
Grounding and Bonding is another major subject.
Contractors should review NEC Article 250, grounding electrode systems, bonding jumpers, equipment grounding, and conductor sizing requirements.
Overcurrent Protection requires understanding fuses, circuit breakers, electrical loads, and conductor protection.
Services and Feeders requires familiarity with electrical distribution and load calculations.
Raceways and Boxes involves wiring methods, conduit systems, fittings, and available wiring space.
Special Occupancies and Equipment includes hazardous locations, commercial garages, health care facilities, swimming pools, and other specialized installations.
Lighting and Signs also contains ten questions.
Candidates should review lighting fixtures, grounding, recessed luminaires, low-voltage lighting, and electrical signs.
Motors and Transformers involves equipment requirements and electrical protection.
Safety questions involve OSHA construction regulations and safe working practices.
The official trade examination uses the 2023 National Electrical Code.
Oklahoma adopted the 2023 NEC with state amendments.
PSI's current bulletin lists that edition as the approved electrical code reference.
The examination also allows OSHA 29 CFR Part 1926 and Ugly's Electrical References.
Candidates bring their own approved books.
Permanent tabs, prior highlighting, and prior underlining are allowed within PSI restrictions.
Temporary tabs, handwritten notes, and loose reference papers are prohibited.
NEC Handbooks and spiral-bound NEC copies are also prohibited.
These reference rules should be reviewed before test day.
Contractor Exam Preps sells Oklahoma Master Electrician preparation packages based on the 2026 NEC.
These products provide useful study guides, electrical calculations, code navigation, flash cards, and exam-style practice.
However, 2026 NEC-based materials are not the current Oklahoma examination code edition.
Students should use the 2023 NEC for exam-specific preparation.
The Oklahoma Master Electrician Super Combo includes an Oklahoma study guide, Electrician Calculations Study Guide, 2026 NEC paperback with tabs, and Master Electrician flash cards.
The Oklahoma Master Electrician Study Guide and NEC Combo includes practice exams and final examinations.
The Flash Card Combo supports repeated quick review.
Contractor Exam Preps also sells 2023 NEC-based general Master Electrician online study products.
These can support electrical review, although candidates should confirm that state-specific material matches Oklahoma rather than another jurisdiction.
Electrical Business and Law is a separate examination.
The current PSI bulletin lists 50 questions and 120 minutes.
The passing requirement is 70%.
Business and Law covers bidding, estimating, supervision, contracts, financial management, labor responsibilities, payroll, insurance, bonds, taxes, and licensing rules.
Oklahoma-specific laws and regulations are important.
The approved reference list includes the Oklahoma Electrical License Act, CIB rules, Oklahoma Electrical Industry Regulations, lien law, workers' compensation materials, and NASCLA Basic 14th Edition.
Contractors must also satisfy licensing activation requirements.
Oklahoma generally requires a $5,000 surety bond and at least $50,000 commercial general liability insurance for active Electrical Contractors.
Applicable workers' compensation documentation or an approved exemption may also be required.
The contractor must remain properly associated with the electrical business.
Licenses must be kept active and compliant.
Continuing education is another important responsibility.
Current Oklahoma requirements call for twelve approved hours every three years for electrical contractors and journeymen.
Six of those hours must cover adopted code changes.
The remaining approved hours may cover electrical theory, calculations, wiring methods, grounding, controls, motors, transformers, safety, and related subjects.
A six-week study plan can make preparation more manageable.
Start with licensing requirements and electrical theory.
Then study grounding, conductors, protection, services, feeders, motors, and transformers.
Continue with raceways, lighting, signs, and special electrical systems.
Prepare separately for Business and Law and OSHA safety.
Finish with timed practice tests using the current PSI examination format.
With steady study, appropriate references, strong electrical experience, and a clear understanding of Oklahoma's licensing rules, candidates can prepare more confidently for advanced Electrical Contractor examinations.
Oklahoma Master Electrician Contractor Exam Prep helps experienced electricians understand the state's electrical contractor licensing process and prepare for the required PSI examinations.
Oklahoma does not have one separate statewide license officially named Master Electrician.
Instead, it licenses Unlimited, Residential, and Limited Electrical Contractors.
The higher-level credential discussed in this guide is Unlimited Electrical Contractor.
The Construction Industries Board regulates electrical licensing.
PSI administers licensing examinations for approved applicants.
Unlimited Electrical Contractor candidates need qualifying work experience before they can receive state examination authorization.
The current experience requirement is 12,000 verifiable electrical construction hours.
The work history must include 4,000 hours as a licensed Unlimited Electrical Journeyman.
Applicants also need 6,000 hours of commercial or industrial electrical work obtained while employed by a licensed Electrical Contractor.
At least two years of licensed Unlimited Journeyman status are required under the Board's application instructions.
Approved formal electrical education may count for up to 2,000 qualifying hours.
Applicants must document the required experience and complete the Board's application process.
The official September 2026 PSI bulletin lists 100 questions for the Unlimited Electrical Contractor trade exam.
Candidates have 240 minutes to finish.
The required passing score is 70%.
That means at least 70 correct answers.
The trade examination is open book.
The current electrical code reference is the 2023 National Electrical Code.
Oklahoma adopted that edition with state amendments.
The PSI bulletin also permits OSHA 29 CFR Part 1926 and Ugly's Electrical References.
Candidates must bring approved references to the examination center.
They may highlight and underline the references before the exam.
Permanent tabs are permitted.
Temporary tabs, handwritten notes, and loose papers are prohibited.
NEC Handbooks and spiral-bound copies of the NEC are also prohibited.
Students should practice with the approved reference editions before test day.
The Unlimited Electrical Contractor exam contains thirteen official subjects.
General Knowledge contains four questions.
General Electrical Knowledge contains ten questions.
Electrical Installation Requirements contains ten questions.
Services, Feeders, and Branch Circuits contains ten questions.
Overcurrent Protection contains nine questions.
Grounding and Bonding contains ten questions.
Conductors and Cables contains eight questions.
Raceways and Boxes contains seven questions.
Special Occupancies and Equipment contains ten questions.
Low Voltage, Alarms, Signaling Systems, and Communications contains two questions.
Lighting and Signs contains ten questions.
Safety contains four questions.
Motors and Transformers contains six questions.
These categories add up to 100 questions.
Electrical theory is important throughout the examination.
Candidates should understand voltage, current, resistance, power, AC electricity, and three-phase systems.
Electrical calculations are also useful.
Study load calculations, services, feeders, branch circuits, conductor sizing, motors, transformers, box fill, and raceway fill.
Grounding and Bonding is another important area.
Review grounding electrode systems, equipment grounding conductors, bonding jumpers, and electrical fault paths.
Overcurrent Protection involves fuses, circuit breakers, and conductor protection.
Special Occupancies includes installations with additional NEC requirements.
Examples include hazardous locations, garages, health care facilities, swimming pools, and hot tubs.
Lighting and Signs covers luminaires, fixture grounding, recessed lights, electric signs, and low-voltage lighting.
Motors and Transformers covers equipment requirements, protection, and electrical calculations.
Safety questions cover applicable OSHA construction regulations and safe work practices.
Oklahoma also uses a separate Electrical Business and Law examination for contractor applicants.
It contains 50 questions.
Candidates have 120 minutes.
The passing score is 70%, which means 35 correct answers.
The Business and Law examination covers bidding, estimating, project management, contracts, finance, labor law, payroll, insurance, bonds, taxes, and licensing rules.
Approved references include Oklahoma Electrical Industry Regulations, the Electrical License Act, CIB administrative rules, lien law, and workers' compensation materials.
NASCLA Contractors Guide to Business, Law and Project Management, Basic 14th Edition, is also listed.
Contractor Exam Preps sells Oklahoma Master Electrician study packages.
The 2026 Oklahoma Master Electrician Super Combo includes the Oklahoma Master Electrician Study Guide, an Electrician Calculations Study Guide, a 2026 NEC paperback with tabs, and Master Electrician Flash Cards.
That package supports electrical calculations and code navigation.
The 2026 Oklahoma Master Electrician Study Guide and NEC Combo includes twelve practice exams and two final exams.
The Oklahoma Master Electrician Flash Card Combo provides another way to review electrical formulas, definitions, and trade concepts.
These products are based on the 2026 NEC.
They can support updated-code learning, but candidates should use the 2023 NEC for current Oklahoma PSI code-specific examination preparation.
The store also sells general Master Electrician products based on the 2023 NEC.
These products may be useful for calculation practice and general electrical exam review.
Because some generic packages focus on other states, candidates should not assume that every state-specific requirement applies to Oklahoma.
After passing the required examinations, applicants must complete contractor license activation.
Oklahoma generally requires a $5,000 corporate surety bond.
The Board also requires at least $50,000 commercial general liability insurance.
Applicable workers' compensation requirements or approved exemptions must be addressed.
The electrical contractor must maintain the proper relationship with the licensed firm.
Continuing education is required after licensing.
Current Oklahoma rules require twelve hours every three years for electrical contractors and journeymen.
Six hours must cover code updates.
Other approved subjects can include electrical theory, calculations, wiring methods, grounding, transformers, motors, controls, safety, and regulations.
Preparation is easier when organized into weekly subjects.
During the first week, study licensing rules, code organization, and electrical theory.
During the second week, review grounding, conductors, and overcurrent protection.
During the third week, practice services, feeders, branch circuits, motors, and transformers.
During the fourth week, study raceways, lighting, special occupancies, and communications.
During the fifth week, focus on Business and Law, OSHA safety, and Oklahoma-specific regulations.
During the sixth week, complete timed trade and business practice examinations.
Review incorrect answers and return to weak subjects.
Strong electrical experience, consistent study, accurate calculations, correct code references, and proper licensing documentation can help candidates prepare for Oklahoma Unlimited Electrical Contractor licensing with greater confidence.
Explore Oklahoma Master Electrician study guides, electrical calculations books, NEC materials, flash cards, practice exams, and contractor-level electrical preparation at ContractorExamPreps.com.
