TDLR • PSI • 2026 NEC • 75 Knowledge Items • 33 Calculation Items • 150 + 170 Minutes • 70% Each Portion • 12,000 Hours • Two Years as Journeyman
Ready for the Texas Master Electrician exam? This complete guide explains TDLR licensing, the two-part PSI test, current NEC rules, official topic outlines, and study resources from Contractor Exam Preps. Whether you are reviewing service calculations or hunting down a tiny code exception, a smart plan can save time and prevent expensive surprises.
Texas issues a Master Electrician license to qualified individuals who have advanced electrical training, a documented journeyman license history, and the ability to demonstrate code knowledge. It covers the electrical wiring systems, equipment, and related work defined in Texas law. It is a professional license, not a diploma from a weekend workshop. The Texas Department of Licensing and Regulation, usually shortened to TDLR, reviews eligibility and issues the credential. A master electrician may also serve in a supervisory or master-of-record role when applicable, but the individual license is not by itself a license for an electrical contracting company.
TDLR is the state licensing authority, while PSI administers the licensing examination after the state confirms an applicant may test. That division matters. Questions about supervised work experience, applications, and licensing belong with TDLR. Questions about a testing appointment, testing-center procedures, and PSI examination rules belong with PSI. The safest starting point is the official TDLR exam information page. A store page or an older PDF can provide helpful background, but the directions tied to your actual PSI appointment control what to bring and when to arrive.
TDLR requires at least 12,000 hours of on-the-job training under the supervision of a Texas-licensed Master Electrician. Each supervising Master Electrician normally needs to verify the relevant experience on the state form. Applicants also must have held a Journeyman Electrician license for at least two years. Journeyman Industrial Electrician experience does not qualify toward this particular master license requirement. That detail surprises some otherwise experienced electricians. Gather records before setting an exam date, since an incomplete work history can delay your TDLR approval.
No. A Master Electrician is an individual license classification. An Electrical Contractor is a separately licensed business that offers or performs covered electrical work. Texas generally requires nonexempt electrical work to be performed through a licensed electrical contractor business. That business has its own application, insurance, and master-of-record requirements. Passing the master examination does not automatically create an electrical contractor business license, no matter how many years you have spent untangling wiring problems.
PSI is the testing company for Texas electrician licensing examinations. Texas uses a two-portion Master Electrician examination: NEC Knowledge and Calculations. Each portion has its own question count, timer, and passing result. Time that remains after finishing one part does not transfer to the other. Read the current PSI Candidate Information Bulletin before booking, because examination outlines, book restrictions, and test-center procedures can be updated. A candidate who studies from a years-old screenshot risks preparing for a test format that is no longer offered.
The published Texas Master Electrician PSI outline shows 75 items on the NEC Knowledge portion, including five non-scored items, and 33 items on the Calculations portion, including three non-scored items. That leaves 70 scored knowledge questions and 30 scored calculation questions. The official Master bulletin hosted in TDLR's older PDF library displays this outline, but candidates should confirm it against the live PSI bulletin for their actual appointment. Non-scored pilot items are mixed into the examination and are not announced as freebies.
The published PSI format gives 150 minutes to the NEC Knowledge portion and 170 minutes to Calculations. Put another way, that is two hours and thirty minutes for the first portion and two hours and fifty minutes for the second. These are separate time limits. Practice taking a full knowledge set under a 150-minute timer, then work through a second timed calculations set. You may know how to size a conductor with unlimited time, but the clock has not signed up for your study group.
Texas requires a minimum score of 70% on each Master Electrician exam portion. Under the published 70-scored-item knowledge outline, that corresponds to 49 correct scored answers; under the 30-scored-item calculation outline, it means 21 correct scored answers. Because pilot questions are not scored, you cannot simply count correct answers from the total items. You also cannot average a high score in one portion with a failing score in the other. Practice each part until your performance stays comfortably above the minimum.
Texas adopted the 2026 National Electrical Code effective September 1, 2026. TDLR's current electrician examination page lists the 2026 NEC as the examination reference, while older archived pages and store descriptions may still mention the 2023 edition. This is why a code-cycle check is essential before buying books or scheduling a test. Use the edition identified by the current TDLR and PSI directions for your examination. Study materials aligned with the 2026 NEC are a sensible match for candidates preparing under the current code cycle.
Yes. TDLR identifies the electrician exam as open book. Candidates must supply their own permitted NEC reference. Its guidance allows a soft-bound NEC book and does not permit loose-leaf, spiral-bound, or ring-bound versions in the exam room. Only compliant reference materials can be used; a study package may include books that are useful at home but are not approved at a testing station. Always review current PSI rules on attached tabs, book markings, calculators, and prohibited notes before you pack your bag.
The knowledge portion spans definitions, electrical theory, plans, services, service equipment, separately derived systems, feeders, branch circuit conductors, wiring methods, materials, electrical devices, motors, generators, control devices, disconnects, special occupancies, and renewable energy technologies. Many questions demand more than naming a part. They ask whether a wiring method is allowed, where a rule applies, or how a system should be protected. Practice identifying the important words in the question before opening the NEC index.
Calculations test the math and code application involved in services, feeders, branch circuits, conductors, motors, generators, transformers, wiring methods, equipment, and some special systems. A good calculation routine begins with listing known quantities, identifying the correct code rule, and writing the units beside every number. Check whether the question asks for load, ampacity, overcurrent protection, or another value. Guessing the right formula can be harder than doing the arithmetic, especially when two answers look almost identical.
Electrical services, service equipment, and separately derived systems hold substantial weight in both published exam outlines. Candidates should review service sizing, disconnect placement, supply connections, grounding and bonding, service-entrance conductors, transformers, and system configuration. Learn what makes a system separately derived and which grounding rules apply. These topics often connect to calculations, so keep knowledge review and math practice close together. For example, a service question can involve equipment definitions, conductor sizing, and a table, all before lunch.
Feeders and branch circuits are central to both code knowledge and calculations. Study feeder sizing, branch circuit ratings, conductor insulation, continuous loads, conductor adjustment and correction, overcurrent protection, receptacle requirements, and equipment connections. Do not rely on one favorite example from a jobsite. Commercial, residential, and special occupancy conditions can change the answer. A good study method is to compare similar questions and find the one word that makes the relevant NEC section different.
Very important. Although grounding and bonding do not have a separate named category on every published chart, those rules appear within services, systems, wiring methods, and equipment questions. Know the difference between a grounded conductor, an equipment grounding conductor, and a grounding electrode conductor. Practice identifying bonding locations and grounding connections under the relevant code provisions. Mix diagrams with NEC lookups. Color-coded wires may be familiar, but an exam question is often testing the rule behind the connection.
Motor and generator topics appear in both Master portions, with especially notable representation in the calculations outline. Review motor full-load current tables, feeder and branch circuit rules, overload protection, short-circuit and ground-fault protection, disconnects, controllers, and common generator arrangements. Work several problems where the equipment rating, number of motors, or duty changes the required calculation. Take your time reading what the question is actually asking. A motor overcurrent question and a motor overload question are not interchangeable.
The knowledge outline includes special occupancies, special equipment, special conditions, and renewable energy topics. Review relevant NEC sections for locations with special hazards, emergency or standby power, photovoltaic systems, electrical storage, electric vehicle charging, and equipment that requires special installation rules. You do not need to treat every unusual installation as your main study topic, but you should know where to look. Special rules can override general habits, which is exactly why exam writers like asking about them.
Contractor Exam Preps lists several Texas-focused resources, including the 2026 Texas Master Electrician Study Guide and 2026 NEC combo, the Super Combo with calculations and flash cards, and the Ultimate Combo with online preparation. These packages are built for different study styles. A book-and-code combo suits a reader who wants a structured reference. A larger set may be useful when math, practice tests, and flash cards all need attention. Compare each product's included materials before buying, and distinguish study books from exam-room permitted references.
Books based on the 2023 NEC can still teach electrical fundamentals, but they may not reflect code changes now being tested. Texas's 2026 code adoption makes it especially important to compare study materials with the edition used for your scheduled examination. The store has both older 2023 packages and newer 2026 products. When learning a subject from an older study guide, check the rule again in the current NEC. Electrical math may last for years, but a changed subsection can make an old answer unreliable.
An applicant first documents journeyman license history and supervised experience, submits the initial Master Electrician application by mail, and pays the currently published TDLR application fee of $45. TDLR evaluates the paperwork and sends eligibility approval before the candidate schedules testing with PSI. After the required exams and other conditions are satisfied, the state can issue the individual license. A passing exam score alone is not the whole application. Keep copies of your experience forms and make sure all names match your state records.
Texas individual electrician licenses generally renew annually. Continuing education duties depend on the license type and current TDLR rules. A newly licensed Master Electrician should check the renewal page for the correct hours, approved topics, and reporting process rather than assuming the initial exam covers future renewal responsibilities. Code adoption, supervision rules, and electrical safety standards keep changing. Maintaining the credential means staying current after test day, not putting the code book in a closet forever.
Use week one for eligibility review, code-book setup, definitions, and theory. Weeks two and three can focus on services, feeders, branch circuits, wiring methods, and equipment. Weeks four and five should add motor calculations, special systems, and mixed timed drills. Use week six for full-length practice of both exam portions, weak-topic correction, and final book-rule checks. If you work full time, shorter consistent sessions may be easier to maintain than one giant weekend. Repetition is more useful than a heroic coffee budget.
Confirm your Master Electrician eligibility with TDLR, verify the current PSI bulletin, and make sure your code edition matches the official reference policy. Check the test portions, times, retake fees, identification rules, approved calculator rules, and book restrictions. Practice the two portions separately, since passing one cannot make up for failing the other. Finally, decide whether you are seeking only the individual Master Electrician license or also planning a separate Electrical Contractor business application. Knowing your exact goal keeps the paperwork as organized as your panel labels.
Important Texas Master Electrician 2026 Update: Texas adopted the 2026 National Electrical Code effective September 1, 2026. TDLR currently lists the 2026 NEC on its electrician exam page. The published PSI Master outline contains two portions: NEC Knowledge (75 total items including five unscored, 150 minutes) and Calculations (33 total items including three unscored, 170 minutes), with 70% required on each. The older downloadable TDLR bulletin still bears a 2023 code-cycle date, so verify the live PSI bulletin before scheduling. The individual Master license requires two years as a Journeyman Electrician and 12,000 hours of verified supervised electrical work. A separate Electrical Contractor business license may also be required to contract for work.
A Texas Master Electrician is an experienced individual license holder authorized for the electrical work defined by Texas law. The state requires a qualifying journeyman license history, documented supervised work, and passage of the Master Electrician examinations. A Master Electrician may supervise electrical work and may be designated as the master of record for an appropriately licensed electrical contracting business.
TDLR licenses the individual and separately licenses an Electrical Contractor business. The business must meet additional requirements, including an eligible master of record and business liability coverage. Learning that distinction early avoids confusing the master exam with a contractor business application.
Regulator: Texas Department of Licensing and Regulation (TDLR).
Exam company: PSI.
Exam structure: NEC Knowledge and Calculations, each 70% to pass.
Experience: 12,000 supervised hours and two years as a Journeyman Electrician.
Code: Texas adopted 2026 NEC effective September 1, 2026.
This table separates the individual license application, Master examination, code-book rules, and related study resources.
| Requirement | Published Information | What to Know |
|---|---|---|
| State | Texas | TDLR statewide electrical licensing. |
| Individual credential | Master Electrician | Not itself an Electrical Contractor business license. |
| Regulator | TDLR | Official Master license application |
| Exam provider | PSI | TDLR must approve eligibility before PSI scheduling. |
| Prior license | Journeyman Electrician, two years | Journeyman Industrial Electrician does not meet this specific qualification. |
| Verified experience | 12,000 hours | Under Texas-licensed Master Electrician supervision. |
| Experience records | Supervisor verification forms | Separate form from each qualifying supervising Master Electrician. |
| Initial TDLR application | By mail | Follow current TDLR instructions. |
| Published application fee | $45 | Check amount on the current application. |
| License duration | One year | Annual renewal applies. |
| Knowledge items | 75 total; 70 scored | Five pilot/non-scored items in published outline. |
| Knowledge duration | 150 minutes | Time does not transfer to Calculations. |
| Knowledge passing | 70% | 70 scored questions in the published outline. |
| Calculations items | 33 total; 30 scored | Three pilot/non-scored items. |
| Calculations duration | 170 minutes | Separate portion and separate clock. |
| Calculations passing | 70% | 30 scored questions in published outline. |
| Exam mode | Computer-based, open book | PSI exam center; follow current bulletin. |
| Code edition | 2026 NEC adopted in Texas | Effective September 1, 2026. |
| Allowed primary reference | Permitted soft-bound NEC | Check current PSI requirements. |
| Prohibited binding types | Loose leaf, spiral, ring bound | Do not take these NEC formats. |
| Calculators | PSI-approved only | Review the exact model/features policy. |
| Identity check | Government-issued photo ID | Name must match TDLR exactly. |
| Older bulletin caution | Archived PDF mentions 2023 NEC | Refer to current TDLR and live PSI rules. |
| Knowledge: Definitions / Theory / Plans | 7 scored items | Electrical terms, plans, and fundamentals. |
| Knowledge: Services / Equipment / Derived Systems | 11 scored items | Service and grounding rules. |
| Knowledge: Feeders | 7 scored items | Feeder rules and sizing. |
| Knowledge: Branch Circuit Conductors | 11 scored items | Branch conductor sizing and conditions. |
| Knowledge: Wiring Methods / Materials | 7 scored items | Cables, raceways, materials. |
| Knowledge: Equipment / Devices | 7 scored items | Equipment installation. |
| Knowledge: Motors / Generators | 7 scored items | Motor and generator rules. |
| Knowledge: Controls / Disconnects | 3 scored items | Protection and disconnecting means. |
| Knowledge: Special Occupancies | 7 scored items | Special location and equipment rules. |
| Knowledge: Renewables | 3 scored items | Renewable energy technologies. |
| Calculations: Theory | 2 scored items | Math and electrical fundamentals. |
| Calculations: Services / Derived Systems | 8 scored items | Largest calculation category. |
| Calculations: Feeders | 3 scored items | Feeder math. |
| Calculations: Branch Circuits / Conductors | 4 scored items | Load and conductor calculations. |
| Calculations: Wiring Methods | 2 scored items | Fill and conductor math. |
| Calculations: Equipment / Devices | 2 scored items | Equipment calculations. |
| Calculations: Motors / Generators | 6 scored items | Motor math is a major priority. |
| Calculations: Controls | 1 scored item | Control-related calculation. |
| Calculations: Special Occupancies | 1 scored item | Use relevant special provisions. |
| Calculations: Renewables | 1 scored item | Renewable math. |
| Electrical Contractor business | Separate TDLR license | Required for nonexempt contracting activity, subject to exceptions. |
| Master of record | Licensed Texas Master Electrician | Business record and affiliation rules apply. |
| Contractor liability | Separate contractor-business requirement | TDLR Electrical Contractor requirements |
| Study source | Contractor Exam Preps | 2026 Texas Master Ultimate Combo |
| Other study source | Master + calculations | 2026 Texas Master Super Combo |
| Code-book combo | Texas 2026 Master | Master Study Guide + NEC |
Review the two exams as separate tasks. The 2026 NEC is current Texas code; confirm the live PSI bulletin for every scheduled examination detail.
| Detail | Category | Information |
|---|---|---|
| Individual License | Credential | Texas Master Electrician |
| Authority | Licensing | TDLR |
| Exam vendor | Testing | PSI |
| Code basis | References | 2026 NEC on current TDLR exam page |
| Knowledge | Part 1 | 75 items: 70 scored, 5 unscored |
| Knowledge timing | Part 1 | 150 minutes |
| Knowledge pass standard | Part 1 | 70% |
| Calculations | Part 2 | 33 items: 30 scored, 3 unscored |
| Calculations timing | Part 2 | 170 minutes |
| Calculations pass standard | Part 2 | 70% |
| Overall format | Testing | Two portions; both must be passed |
| Open-book | Testing | Permitted NEC reference only |
| Unused time | Timing | Does not transfer between portions |
| Application approval | Eligibility | TDLR reviews before PSI scheduling |
| Journeyman history | Eligibility | At least two years |
| Documented training | Eligibility | 12,000 hours under licensed Master Electrician |
| TDLR application fee | Licensing | $45 published on current application page |
| Exam fee | Testing | Confirm current PSI rate at booking |
| Knowledge scored domains | Exam outline | Ten areas totaling 70 scored items |
| Calculation scored domains | Exam outline | Ten areas totaling 30 scored items |
| Knowledge priority | Exam outline | Services and branch conductors: 11 each |
| Calculation priority | Exam outline | Services: 8; motors: 6 |
| Definition of contractor | Licensing | Separate business license from individual Master |
| Current verification | Important | TDLR live examination guidance |
| Master NEC knowledge | Reference | 2026 National Electrical Code |
| Exam bulletin | Reference | Live PSI Candidate Information Bulletin |
Published exam outline: NEC Knowledge 75 items and 150 minutes; Calculations 33 items and 170 minutes.
Passing rule: 70% on EACH portion.
Code cycle: 2026 NEC, effective in Texas September 1, 2026.
Check for updates: The archived PDF outline is older than the current code adoption.
The published PSI Master outline divides the test into ten knowledge categories and ten calculation categories. The figures below describe scored items in that outline.
Read drawings, symbols, definitions and basic electrical theory. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Review service rules, disconnects, grounding and separately derived systems. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Study feeder protection, sizing and routing. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Understand conductor selection, branch circuits and protection. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Review raceways, cables, fittings, boxes and wiring rules. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Practice installation and equipment requirements. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Learn motor and generator application rules. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Review controllers, switching and disconnects. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Find NEC requirements that supplement general rules. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Review PV, energy storage, and renewable system basics. Build fast code lookups by practicing terms, exceptions, and the matching article or table.
Work theory formulas and unit conversions. Show each calculation step, identify the correct table, and check units.
Practice service loads, service sizing and transformers. Show each calculation step, identify the correct table, and check units.
Calculate feeder loading and conductor needs. Show each calculation step, identify the correct table, and check units.
Calculate circuit loads, current, ampacity and protection. Show each calculation step, identify the correct table, and check units.
Practice raceway and box-related calculations. Show each calculation step, identify the correct table, and check units.
Review equipment ratings and code-based math. Show each calculation step, identify the correct table, and check units.
Practice motor currents, conductors and protection. Show each calculation step, identify the correct table, and check units.
Review sizing and ratings of relevant controls. Show each calculation step, identify the correct table, and check units.
Use the correct special rules in calculations. Show each calculation step, identify the correct table, and check units.
Apply basic renewable-system formulas. Show each calculation step, identify the correct table, and check units.
Knowledge: The published outline totals 70 scored questions across ten categories.
Calculations: The published outline totals 30 scored questions across ten categories.
Note: Totals exclude five and three non-scored items respectively. Verify the current live PSI blueprint.
Strong exam preparation is a mix of NEC navigation, advanced calculations, work-history organization, and separate practice for each PSI portion.
Get the current TDLR and PSI bulletin and check whether your Master eligibility has been approved. Work with the 2026 NEC adopted in Texas and read the exam's reference restrictions.
Make a ten-topic checklist for Knowledge and another ten-topic checklist for Calculations. Separate the lists so you never confuse an installation-rule question with a math problem.
Learn major code sections and indexes for services, grounding, bonding, feeders, branch circuits, raceways, and equipment. Practice locating rules without browsing aimlessly.
Devote frequent calculation practice to services, separately derived systems, motors, and generators, because these carry substantial weight in the published math outline.
Review definitions, theory, plans, special occupancies, renewable energy, controllers, generators, and other categories. Smaller subject areas still affect your passing score.
Use a timer: 150 minutes for a 75-item Knowledge simulation and 170 minutes for a 33-item Calculations simulation. Practice with the same allowed references and calculator limits.
Correct every missed problem and write down the NEC section that explains the answer. Then repeat the problem with changed numbers or conditions so you learn the method, not one result.
Choose matching resources from Contractor Exam Preps, such as the 2026 Master NEC Combo, Master Super Combo, or Ultimate Combo, and review the included materials carefully.
Before the appointment, verify your testing center, photo ID, book binding, markings, calculator rules, and both portion results. Keep your TDLR application paperwork organized.
Step 1: Verify TDLR approval and current PSI requirements.
Step 2: Map 20 subject domains across the two portions.
Step 3: Complete realistic timed knowledge and math drills.
Step 4: Confirm 2026 NEC and exam-room book rules.
This diagram follows the attached blog's technical illustration style and shows how major Master exam topics connect.
Conceptual exam-study illustration, not an installation plan. Follow the adopted NEC, approved project documents and local requirements.
Verify your Texas Journeyman Electrician license history and 12,000 qualifying supervised hours.
Obtain the required forms from each supervising Texas Master Electrician.
Submit the initial Master Electrician application and current fee according to state instructions.
Wait for TDLR confirmation before booking the PSI test.
Confirm the current PSI Candidate Information Bulletin and permitted NEC book.
Prepare separately for 75-item Knowledge and 33-item Calculations with 70% required on each.
Follow any remaining TDLR licensing steps, background review and issuance procedures.
If offering contracting services, use the separate Electrical Contractor business license route as applicable.
The published PSI Master outline lists ten scored domains in each portion. The percentage bars are each category's share of the scored items in THAT portion; they do not include unscored pilot items.
Knowledge priority: Electrical Services and Branch Circuit Conductors (11 each of 70).
Calculation priority: Services and Separately Derived Systems (8 of 30), then Motors and Generators (6 of 30).
Verification: These published topic counts appear in an older PSI bulletin; check the live outline for changes under the 2026 NEC.
These resources serve different jobs: the NEC is the primary code reference, while books and courses help teach concepts and exam practice. Only bring references that PSI currently allows.
| Book or Reference | Edition or Product | Purpose |
|---|---|---|
| National Electrical Code | 2026 Edition | TDLR-adopted electrical code for current exam preparation. |
| 2026 Texas Master Electrician Study Guide | 2026 NEC-based | State-focused trade study, practical questions and review. |
| 2026 Electrician Calculations Study Guide | 2026 NEC-based | Electrical math, motors, loads, services, conductor and equipment calculations. |
| 2026 NEC Paperback with Tabs | 2026 NEC | Study navigation; only use compliant exam-room markings and binding. |
| 2026 Master Electrician Flash Cards | 2026 | Terms, formulas, definitions, and rapid recall. |
| 2026 Master Electrician Online Test Success Kit | 2026 | Exam practice and targeted self-study in the store's Ultimate Combo. |
| 2026 Texas Master NEC Combo | Contractor Exam Preps | Guide plus tabbed NEC for focused book study. |
| 2026 Texas Master Super Combo | Contractor Exam Preps | Adds calculations and flash cards. |
| 2026 Texas Master Ultimate Combo | Contractor Exam Preps | Adds online practice resources to larger book set. |
| Texas 2023 Complete Master Electrician Package | Earlier code cycle | Historical product; check code changes before using. |
| Texas Master TDLR Application | Current forms | Experience records and eligibility. |
| Live PSI Candidate Bulletin | Appointment-specific | Controlling rule source for test-day materials and the current outline. |
Code edition: Texas adopted the 2026 National Electrical Code effective September 1, 2026.
Exam room: Study-guide packages do not automatically mean every included book is permitted at PSI.
Product check: Verify included editions, availability and delivery information on the store pages.
A code-book exam still rewards prepared electricians who can identify the rule, locate it quickly, and apply it to the exact installation described. The NEC is a reference, not a mind reader.
Read the current PSI room policy on soft-bound books, tabs, markings, calculators and ID. Practice with a book arranged as closely as possible to the allowed exam-day setup.
The Texas Master Electrician credential covers the electrical work identified by state law, such as installing, maintaining or extending wiring systems and associated equipment. Licensed master electricians commonly supervise complex installations, interpret code requirements, and oversee electrical systems across residential, commercial and industrial settings.
A master license does not replace an Electrical Contractor business license for offering covered electrical contracting services. The state separates an individual's technical qualification from the business authorization required for contracting. Work must also follow permits, inspection requirements, the adopted NEC and any valid local rules.
Individual license: Texas Master Electrician.
Business license: Texas Electrical Contractor is separate.
Professional role: Qualified master may serve as master of record for a licensed contractor subject to TDLR rules.
Before bidding: Confirm business authorization, liability insurance and applicable exemptions.
Texas separates individual trade licenses, specialty licenses, and business licenses. Choose the credential that actually matches the work and responsibilities you intend to assume.
| Classification or Exam | Purpose | Important Difference |
|---|---|---|
| Apprentice Electrician | Entry pathway under supervision | Not equivalent to a Master license. |
| Residential Wireman | Residential-focused individual classification | More limited than full Journeyman / Master. |
| Journeyman Electrician | Experienced individual trade license | Two years held required before Master application. |
| Journeyman Industrial Electrician | Industrial-focused license classification | Does not meet the stated Master qualifying Journeyman requirement. |
| Master Electrician | Advanced individual electrical license | 12,000 hours, journeyman history, two-part PSI exam. |
| Master Sign Electrician | Electrical signs specialization | Separate state classification and exam. |
| Electrical Contractor | Licensed electrical contracting business | Requires proper master-of-record and insurance. |
| Electrical Sign Contractor | Business for electrical sign work | Separate from individual master license. |
| Residential Appliance Installation Contractor | Business for defined appliance installation work | Separate scope and licensing. |
| Texas NEC Adoption | State electrical code | 2026 NEC adopted September 1, 2026. |
The Master exam qualifies an individual; the separate Electrical Contractor license authorizes a contracting business.
75 Knowledge • 33 Calculations • 70% Each
Best for: Eligible electricians upgrading from Journeyman to Master.
Prior Individual License
Best for: Electricians on the qualifying path toward Master.
Separate Licensed Business
Best for: Master electricians who also want to operate an electrical contracting business.
The Texas Master Electrician examination is demanding because it expects advanced code interpretation and detailed electrical calculations. Two separate portions mean candidates must prove both skills. A person who is excellent at installations may still need focused practice on motor and service math, while a confident calculator user may need faster NEC lookup skills.
The published Knowledge outline places its greatest emphasis on services and branch circuit conductors, with 11 scored items each. The Calculations outline gives eight scored items to services and separately derived systems and six to motors and generators. Those subjects should receive regular review, but smaller categories still count toward the minimum passing score.
Neither portion is a race against other candidates. Your goal is to apply the correct rule within a fixed time. Learn to mark the important wording in a problem, identify the likely code section, and review the relevant exception before selecting an answer.
Work on one weak area at a time rather than reading the entire code book repeatedly. Use the error log from your practice tests to decide what you study tomorrow. A repeated mistake is a clue, not a verdict.
Remember the licensing side. Qualifying journeyman history, 12,000 hours of verified training and TDLR approval matter just as much as exam preparation. Technical knowledge without completed paperwork can leave a candidate waiting at the starting line.
Prepare your testing materials before the appointment. A last-minute trip to replace the wrong code book is not the kind of electrical emergency anyone needs.
The following products are linked directly to ContractorExamPreps.com. They cover 2026 NEC topics relevant to the Master exam; the actual PSI testing rules still control which items may enter the testing room.
Study Guides • NEC • Flash Cards • Online Kit
Best for: Candidates wanting a broad mix of books, flash cards and online practice.
Master Guide • Calculations • NEC • Cards
Best for: Candidates preferring printed and portable practice resources.
Master Study Guide • Tabbed NEC
Best for: Candidates wanting a focused guide plus current code book.
Additional option: 2026 Texas Master Study Guide + Flash Card Combo adds review cards and exam-style practice.
Practice-only option: Texas 2026 Master Electrician Study Guide is another store resource.
Important: A product listing may show sold-out status or variants. Verify current availability and the approved test-center references before purchasing.
TDLR • PSI • NEC 2026 • Master License • NEC Knowledge • Calculations • Supervised Experience
View the 2026 Texas Master Electrician Ultimate Prep Package
Texas Master Electrician Licensing
The Texas Department of Licensing and Regulation, or TDLR, issues the individual license.
TDLR requires at least 12,000 verified hours of on-the-job training under a Texas-licensed Master Electrician.
Yes. You must have held a Journeyman Electrician license for at least two years.
TDLR states that Journeyman Industrial Electrician experience may not be used to qualify for this Master Electrician license.
Normally each supervising Master Electrician completes an Experience Verification Form. TDLR describes a limited self-verification route for years you held a municipal or regional master license.
Complete the official TDLR Master Electrician application and follow its mailing instructions.
The TDLR Master Electrician application page currently publishes a $45 nonrefundable application fee. Verify current amounts before submitting.
No. Master Electrician is an individual license; Electrical Contractor is a separate business license.
PSI Master Electrician Examination
PSI administers the examination for TDLR after the state determines your testing eligibility.
The published PSI outline lists 75 total items, including five that are not scored.
The published Master outline allows 150 minutes for NEC Knowledge.
The published PSI outline lists 33 total items, including three non-scored items.
The published Master outline allows 170 minutes for Calculations.
You must score at least 70% on each portion. One strong result cannot offset a failing result on the other.
No. The PSI bulletin states that unused time from one portion does not roll into the next.
No. The published outline has five pilot knowledge items and three pilot calculation items.
No. TDLR reviews the application and sends eligibility instructions before scheduling.
Check the current live PSI Candidate Information Bulletin for the fee applicable to your appointment. Older archived bulletins may display an earlier amount.
2026 NEC and Open-Book Rules
Yes. TDLR identifies the electrician exam as open book, subject to its and PSI's allowed reference conditions.
Texas adopted the 2026 National Electrical Code effective September 1, 2026, and TDLR's current exam page lists the 2026 NEC.
Those listings reflect an earlier state code cycle. Check the current TDLR and PSI requirements for the scheduled exam.
No. TDLR does not permit loose-leaf, spiral-bound, or ring-bound NEC references.
No. Study-package contents are not automatically approved test references. Follow the current PSI policy.
Only as permitted by the current PSI Candidate Information Bulletin. Review the rules before preparing your reference books.
Only a calculator meeting current PSI requirements may be used. Read the approved-item policy for your appointment.
Master Electrical Study Topics
In the published scored outline, Electrical Services and Branch Circuit Conductors are tied at 11 questions each.
Electrical Services, Service Equipment and Separately Derived Systems lead the published calculation outline with eight scored items.
Yes. Motors and Generators account for six scored items in the published Calculations outline.
Yes. Definitions, Theory and Plans form a seven-question Knowledge category in the published outline.
Yes. Grounding and bonding are important across services, wiring methods and equipment subjects.
Yes. Wiring methods and materials appear in both portions and can involve fill-related calculations.
Yes. Renewable Energy Technologies appears in both Knowledge and Calculations outlines.
Not safely. You need at least 70% on each portion, and even one- or two-item categories can matter.
Use separate timed practice: 150 minutes for Knowledge and 170 minutes for Calculations, followed by detailed review.
Books, Courses and Contractor Exam Preps
Yes. The store lists 2026 Texas Master NEC combos, a Super Combo, an Ultimate Combo, practice study guides, and flash card resources.
Its product page describes a 2026 Texas Master Electrician Study Guide and a 2026 NEC paperback with tabs.
The store describes a 2026 Master study guide, calculations guide, tabbed NEC, and Master flash cards.
The Ultimate listing also includes a Master online test success kit along with several books and flash cards.
No. They support preparation, but TDLR determines licensing eligibility and PSI reports exam results.
It may teach fundamentals, but you should check every code-based answer against the NEC edition used for your current exam.
Yes. This page embeds 1ExamPrep's 2026 Master Electrician Exam Prep License Study Guide video.
Contractor Business, Renewal and Next Steps
A Master license may support a company application, but the company must obtain its separate Electrical Contractor license and meet TDLR requirements.
TDLR requires specified business liability insurance limits for Electrical Contractor license holders.
It is the licensed Master Electrician designated for an Electrical Contractor business under TDLR rules.
TDLR issues individual electrician licenses for one year, with annual renewal.
Use TDLR's official Master Electrician application and Electrician Exam Information pages, plus the live PSI Candidate Information Bulletin.
Watch this 1ExamPrep Master Electrician video about planning study time, organizing the code book, reviewing major electrical topics, and approaching NEC-based licensing tests.
The video is a preparation resource, not a substitute for the current Texas TDLR requirements or your PSI examination instructions. Texas master applicants should use the 2026 NEC currently adopted by the state.
Creator: 1ExamPrep.
Video: 2026 Master Electrician Exam Prep License Study Guide.
Focus: Exam structure, code books, timed practice, and licensing preparation.
Authority: TDLR and PSI govern Texas licensing and test-day rules.
Use the Contractor Exam Preps product links for learning materials and the official Texas pages for state licensing, examination rules, code adoption, and reference permissions. Store listings may change, so confirm included items and current availability.
Current code: 2026 NEC adopted by Texas effective September 1, 2026.
Published exam: 75 Knowledge items (150 min), 33 Calculations items (170 min), 70% each.
Experience: Two years as Journeyman Electrician plus 12,000 verified hours.
Important: Individual Master licensing differs from Electrical Contractor business licensing.
Preparing for the Texas Master Electrician exam is the next step for experienced electricians who want to prove advanced code knowledge, calculation ability, and professional judgment. The exam is not simply a longer Journeyman test. It expects you to work comfortably with services, feeders, branch circuits, electrical systems, motors, generators, controls, special occupancies, and complex electrical math. A practical plan is better than reading the NEC without any direction. Start by learning the structure of the exam and its official rules, then build your study schedule around the most important subjects.
Your licensing paperwork comes first. Texas requires at least 12,000 hours of supervised on-the-job electrical training and at least two years holding a Journeyman Electrician license. TDLR asks applicants to document their hours with the required verification forms. Do not assume experience alone is enough. If you need a supervisor's signature, request it early. The application, published state fee, eligibility review, and examination approval are separate steps from studying. Organizing these tasks now can save weeks of back-and-forth later.
The Master Electrician examination has two parts: NEC Knowledge and Calculations. The published PSI outline identifies 75 knowledge items, including five unscored items, with 150 minutes allowed. The Calculations portion contains 33 items, including three unscored items, with 170 minutes allowed. Both portions require at least 70 percent, and extra time from one does not roll into the next. Because the older archived bulletin may not show every 2026 update, always compare those published numbers with your live PSI instructions before scheduling.
The applicable code edition matters just as much as the test format. Texas adopted the 2026 National Electrical Code effective September 1, 2026, and TDLR's current examination page lists it as the reference. Many older practice products and articles still mention the 2023 NEC. Those books can explain long-standing concepts, but they should not be trusted blindly for code-specific answers. Use the current NEC when learning a rule, checking exceptions, or building your permitted test-day reference.
Give extra attention to services and separately derived systems, branch circuit conductors, and electrical equipment in the Knowledge portion. For Calculations, spend serious time on service calculations and motors. Those are the heavier areas in the published topic breakdown. Still, a category with one or two items could supply the points that push you over the passing line. Study every domain, even if your daily job focuses on one kind of electrical system.
Use a repeatable process for difficult questions. First, determine what is being asked. Second, write down the known conditions and the required quantity. Third, select the NEC article, table, or formula. Fourth, calculate or compare the rule carefully. Last, check your units, exceptions, and the wording of the available answers. Record mistakes in a simple notebook for home study. When the same issue appears again, review it until you can explain the reasoning without guessing.
Contractor Exam Preps offers Texas Master Electrician study products based on the 2026 NEC. The guide-and-code combo provides a focused foundation. The Super Combo adds more calculations material and flash cards. The Ultimate Combo adds an online test success kit. Choose according to your needs rather than assuming the largest package is automatically best for everyone. Remember that books provided for study are not necessarily permitted in the exam room. TDLR and PSI set those restrictions.
Finally, remember the difference between an individual Master Electrician license and a separately licensed Electrical Contractor business. The master credential can be an important step toward supervising electrical work or serving as a master of record, but it does not automatically authorize a business to contract for electrical work. Check separate insurance, designation, permits, and application rules before offering services. With the right references, consistent timed practice, and completed paperwork, the licensing process becomes much easier to manage. Prepare carefully, follow the current state instructions, and let each successful practice session move you closer to your goal.
The Texas Master Electrician license is for experienced electricians who have already spent years learning the trade. It is issued by the Texas Department of Licensing and Regulation, called TDLR. To apply, you generally need at least two years as a Journeyman Electrician and 12,000 hours of electrical training under a Texas-licensed Master Electrician. Your supervisors usually must verify your hours. This is a state license for a person, not the same thing as a business license for an electrical contracting company.
Once TDLR reviews and approves your application, you take the Master Electrician examination through PSI. The exam is split into two parts. The published PSI outline lists 75 items on the NEC Knowledge part, with five unscored questions and 150 minutes to complete it. The Calculations part lists 33 items, with three unscored questions and 170 minutes. You need at least 70 percent on each portion. A good score in one part does not cancel out a low score in the other.
The National Electrical Code is the main reference. Texas adopted the 2026 edition effective September 1, 2026. Some old websites and products still describe the 2023 NEC, so always check the current rules before buying books or taking the exam. TDLR describes the exam as open book, but that does not mean any kind of book is allowed. The NEC must meet test-center requirements, and loose-leaf or spiral-bound copies are not allowed. Check PSI instructions for tabs, highlights, calculators, and other items.
The Knowledge portion covers electrical terms, basic theory, drawings, services, feeders, branch circuits, wiring methods, electrical devices, motors, generators, control equipment, special occupancies, and renewable energy. You need to understand how these systems work and where the important NEC rules can be found. Practice reading questions slowly enough to notice key details. One word in a code question can change which rule applies.
The Calculations portion tests electrical math. You may need to work out service loads, conductor sizing, feeder calculations, motor values, raceway fill, or related numbers. The most useful habit is writing a clear solution. Identify the known facts, locate the correct formula or code table, solve the problem, and check the units. Practice these steps again and again. It is easier to avoid a careless mistake when your work is organized.
A six-week plan can help you prepare. Start with the code-book layout and theory, then work through services, grounding, feeders, and branch circuits. Add wiring methods, motors, generators, and special electrical systems. In the final week, take timed practice sets that match the two separate exams. Keep track of errors and spend extra study time on topics where your scores are weak.
Contractor Exam Preps offers several products built around the 2026 NEC. The Texas Master Electrician NEC combo includes a study guide and code book. The Super Combo includes calculation materials and flash cards. The Ultimate Combo adds online practice resources. You can select a package based on whether you need more reading, more math practice, or more exam-style questions. Buying study materials does not guarantee a license, and only the books allowed by the exam rules should go to the test center.
After passing the tests, continue to follow TDLR's license requirements. If you plan to open an electrical contracting business, you must review the separate Electrical Contractor licensing rules, including a master of record and business insurance requirements. Your personal Master Electrician license is an important qualification, but the business also needs proper authorization. Follow current state rules and keep your license renewed.
