Maryland State Board of Electricians • PSI • 90 Questions • 100 Points • 240 Minutes • 70% Passing • Open Book
Ready to become a licensed Maryland Master Electrician? This Maryland Master Electrician Contractor Exam Prep guide explains the state's licensing process, PSI examination details, reference books, advanced electrical calculations, contractor responsibilities, and actual Maryland study materials from Contractor Exam Preps.
The Maryland Master Electrician license is an advanced electrical credential issued by the Maryland State Board of Electricians, part of the Maryland Department of Labor.
Maryland licenses Master Electricians statewide. Local jurisdictions may still require registration, permits, insurance verification, or other procedures before an electrician or electrical business can perform certain work.
The Master Electrician license represents a higher level of professional qualification than the Apprentice or Journeyperson Electrician classifications.
Master electricians are expected to understand electrical installation requirements, technical calculations, electrical equipment, safety, code compliance, and responsibilities involving supervision and contracting.
In Maryland, qualifying for the Master Electrician examination generally requires at least seven years of regular and principal electrical work experience under the direction and supervision of a Maryland licensed Master Electrician or a similarly qualified government employee.
The Board may allow up to three years of experience credit for approved formal electrical education or professional training that it determines comparable to the required work experience.
That does not mean every school program automatically removes three years from the requirement. Applicants must submit acceptable documentation and receive the Board's approval.
After meeting the requirements, applicants register for the Master Electrician examination through PSI Services LLC.
The official Maryland Master Electrician examination includes 90 scored questions worth 100 total points.
Candidates have 240 minutes, or four hours, to complete the test.
The minimum passing score is 70%, meaning candidates must earn at least 70 of the 100 available points.
Why does a 90-question examination have 100 possible points?
The answer is found in the official examination blueprint. The Electrical Theory category includes ten questions worth two points each.
Those ten questions contribute 20 points. The remaining 80 questions are worth one point each.
This makes the Maryland Master Electrician examination different from a typical test where every question has equal value.
The examination is open book, but only references approved by PSI may be taken into the testing room.
The currently published Maryland PSI candidate bulletin lists the 2020 National Electrical Code, NFPA 70, as the only approved examination-room reference.
Candidates must bring their own approved NEC. PSI does not provide it at the testing center.
Study guides, practice exam books, flash cards, loose notes, and unapproved reference materials are not permitted inside the examination room.
PSI allows certain permanent index tabs, highlighting, and underlining. Removable sticky flags, handwritten notes, and additional loose or attached papers are prohibited under the published rules.
Before purchasing an examination reference or attending the testing center, verify the current requirements in the official Maryland PSI candidate bulletin.
This is particularly important because Contractor Exam Preps offers newer study packages based on the 2026 National Electrical Code.
These books provide current-code education and support advanced electrical study, but the 2026 NEC is not automatically an approved substitute for the PSI-listed 2020 NEC.
For a comprehensive collection of books, the 2026 Maryland Master Electrician Super Combo includes the Maryland Master Electrician Study Guide, Electrician Calculations Study Guide, a 2026 NEC paperback with tabs, and Master Electrician flash cards.
For a smaller book package, the Maryland Master Electrician Study Guide and NEC Combo provides a Maryland-focused study guide and a tabbed 2026 NEC.
Candidates who want extra calculations practice can review the Maryland Master Electrician Calculations and NEC Combo.
For repeated testing, the Maryland Master Electrician Flash Card and Practice Exam Combo includes twelve practice examinations and two full final examinations.
The official PSI Master Electrician examination covers eight major subject areas.
These include Electrical Theory, Wiring and Protection, Wiring Methods and Materials, Equipment for General Use, Special Occupancies, Special Equipment, Special Communications, and Calculations.
Calculations is the largest single scoring category, worth 30 points.
Electrical Theory contributes another 20 points through its ten two-point questions.
Together, Calculations and Electrical Theory represent 50% of the examination's available points.
That is a major reason Maryland Master Electrician candidates should take electrical mathematics seriously.
A calculator is useful, but knowing which formula to use is even more important. A calculator will happily produce the wrong answer if you enter the wrong numbers!
Other examination subjects include grounding and bonding, services and feeders, branch circuits, conductor sizing, overcurrent protection, wiring methods, raceways, motors, transformers, and specialized electrical installations.
The examination also covers emergency systems, communication systems, special occupancies, special equipment, and general electrical knowledge.
A successful study strategy should combine electrical theory, NEC navigation, realistic calculations, code interpretation, and timed practice tests.
With 90 questions and four hours, candidates have an average of approximately two minutes and forty seconds per question.
However, calculation questions may require several steps. Students should practice keeping track of time without rushing important mathematics.
This guide provides Maryland Master Electrician licensing information, the official PSI examination breakdown, codebook requirements, electrical diagrams, a six-week study plan, Contractor Exam Preps products, interactive FAQs, a related 1ExamPrep video, and important state licensing resources.
Important Maryland Master Electrician 2026 Licensing Update: Maryland's statewide Master Electrician license is regulated by the Maryland State Board of Electricians. The published PSI Master Electrician examination contains 90 questions worth 100 points, allows 240 minutes, and requires a minimum score of 70%. It is an open-book examination, but the current published bulletin lists the 2020 NEC as the only permitted reference. Contractor Exam Preps offers 2026 NEC-based study packages that support current-code education but do not automatically replace the approved 2020 exam reference. Master Electrician applicants generally require seven years of qualifying experience, with up to three years of comparable education or training credit possible when approved. After passing, applicants must complete licensing and applicable insurance requirements.
A Maryland Master Electrician is a state-licensed electrical professional with advanced qualifications in electrical installation, technical knowledge, and code compliance.
Master-level electrical work requires understanding how an electrical system functions as a complete installation.
That includes electrical services, feeders, branch circuits, distribution panels, grounding, bonding, protective devices, motors, transformers, and specialized systems.
Master Electricians may also have responsibilities involving project supervision, installation planning, permit applications, electrical businesses, and compliance with state and local requirements.
They must recognize how conductor sizing, electrical loads, overcurrent protection, equipment ratings, and installation conditions affect safety.
For example, designing a commercial electrical service can involve load calculations, demand factors, equipment selection, conductor sizing, and grounding requirements.
Each decision may affect the next.
Choosing the wrong conductor size can create serious problems, even when every other component appears correctly installed.
Maryland's Master Electrician credential is separate from the Apprentice and Journeyperson Electrician licenses.
Applicants normally develop experience through years of supervised electrical work before qualifying for the master examination.
The Master Electrician license is also important for electrical business operations.
However, holding a master license does not remove all other business obligations.
Maryland distinguishes among different licensing and insurance statuses, including insured and uninsured master classifications.
Certain uninsured statuses restrict the ability to pull electrical permits, supervise workers, or perform electrical work.
Contractors must also follow any applicable local registration, permit, and inspection rules.
That means the Master Electrician license is a professional qualification, not a permission slip to ignore the rest of the rules.
State credential: Master Electrician.
Licensing authority: Maryland State Board of Electricians.
Testing company: PSI Services LLC.
Standard experience: Seven qualifying years.
Possible education credit: Up to three years with Board approval.
Business responsibilities: Subject to insurance, registration, permit, and licensing rules.
| Step | Requirement | What to Prepare |
|---|---|---|
| Select License | Master Electrician | Confirm the statewide master-level electrical credential. |
| State Authority | Maryland State Board of Electricians | Review current state licensing information. |
| Standard Experience | Seven Years | Document qualifying electrical work experience. |
| Experience Supervisor | Licensed Master or Qualified Government Employee | Provide acceptable work verification. |
| Formal Education Credit | Up to Three Years | Submit qualifying electrical education or professional training records. |
| Education Approval | Board Determination | Do not assume that all education automatically qualifies. |
| Examination Application | PSI Online Registration | Upload required eligibility documentation. |
| Prior Examination Approval | Required | Wait for authorization before scheduling. |
| Examination Provider | PSI Services LLC | Follow the approved scheduling process. |
| Questions | 90 | Study the eight official subject areas. |
| Total Available Points | 100 | Understand the two-point Electrical Theory questions. |
| Time Limit | 240 Minutes | Practice four-hour examination simulations. |
| Passing Standard | 70 Points | Achieve at least 70% of available points. |
| Testing Format | Open Book | Bring only permitted reference materials. |
| Approved NEC in Published Bulletin | 2020 Edition | Confirm the current reference edition. |
| Study Guides During Testing | Not Permitted | Leave study guides and flash cards outside. |
| Permanent Index Tabs | Permitted Under Rules | Use PSI-compliant permanent tabs. |
| Temporary Tabs | Not Permitted | Avoid removable flags and paper inserts. |
| Exam Fee | $65 Published | Confirm the amount when registering. |
| Retake Waiting Period | 30 Days | Review current PSI retesting rules. |
| Original Master License Fee | $25 | Verify the Board's current fee schedule. |
| Master License Renewal Fee | $31.50 | Follow Board renewal requirements. |
| Insurance Documentation | Applicable Master Status | Provide proof of insurance when required. |
| Reciprocity | Selected Jurisdictions | Check current Maryland reciprocal application rules. |
| Local Registration | May Apply | Verify local business and permitting rules. |
The following information reflects the publicly available Maryland PSI Master Electrician candidate bulletin. Examination reference editions and administrative procedures can change, so candidates should always confirm current instructions.
| Exam Detail | Category | Published Information |
|---|---|---|
| State | Licensing | Maryland |
| Official License | Board | Master Electrician |
| Licensing Authority | Board | Maryland State Board of Electricians |
| Testing Provider | PSI | PSI Services LLC |
| Exam Title | PSI | Master Electrician |
| Scored Questions | Testing | 90 |
| Total Points | Testing | 100 |
| Testing Time | Testing | 240 Minutes |
| Time in Hours | Testing | Four Hours |
| Passing Percentage | PSI | 70% |
| Passing Points | PSI | 70 of 100 |
| Exam Format | PSI | Open Book |
| Published Approved Reference | Books | 2020 National Electrical Code, NFPA 70 |
| Candidate Provides Book | Testing | Yes |
| Study Guides | Testing | Not Allowed in Exam Room |
| Permanent Tabs | Testing | Allowed Under PSI Rules |
| Removable Tabs | Testing | Not Allowed |
| Loose Paper | Testing | Not Allowed |
| Electrical Theory | Blueprint | 10 Questions Worth 20 Points |
| Wiring and Protection | Blueprint | 14 Questions, 14 Points |
| Wiring Methods and Materials | Blueprint | 13 Questions, 13 Points |
| Equipment for General Use | Blueprint | 9 Questions, 9 Points |
| Special Occupancies | Blueprint | 8 Questions, 8 Points |
| Special Equipment | Blueprint | 4 Questions, 4 Points |
| Special Communications | Blueprint | 2 Questions, 2 Points |
| Calculations | Blueprint | 30 Questions, 30 Points |
| Total Subject Categories | Blueprint | Eight |
| Standard Experience | Licensing | Seven Years |
| Possible Education Credit | Licensing | Up to Three Years With Board Approval |
| Exam Application | Registration | Online Through PSI |
| Exam Fee | Registration | $65 on Current Board Examination Page |
| Original Master License Fee | Licensing | $25 |
| Current Retail Study Materials | Products | 2026 NEC-Based Packages |
Exam: 90 questions worth 100 points.
Time: Four hours.
Passing: 70 total points.
Largest scoring area: Calculations, 30 points.
Electrical Theory: Ten two-point questions.
Published exam-room reference: 2020 NEC.
The Maryland Master Electrician examination has eight official subject categories. The content outline totals 90 questions and 100 possible points.
This category contains ten questions worth two points each.
Study electrical definitions, Ohm's law, formulas, electrical theory, troubleshooting, instruments, equipment, materials, conversions, diagrams, and symbols.
Because each question in this category is worth two points, a missed theory question can have a larger effect on your score than a missed one-point question.
Review NEC definitions, installation requirements, grounded conductors, branch circuits, feeders, services, overcurrent protection, grounding, bonding, and related protection rules.
The official outline references NEC Article 100, Article 110, Articles 200 through 210, Articles 215 through 225, Article 230, Article 240, and Articles 250 through 285.
Study conductor requirements, raceways, cables, fittings, boxes, wiring methods, materials, support rules, conduit fill, box fill, and related NEC requirements.
Important article ranges include Article 300, Articles 310 through 314, and additional wiring-method articles extending through Article 398.
Review luminaires, receptacles, switches, appliances, electric heating equipment, motors, transformers, capacitors, generators, and related equipment.
The published content outline covers article ranges from 400 through 490.
Study specialized locations such as hazardous areas, certain public or commercial spaces, health care facilities, temporary installations, manufactured buildings, and other areas subject to special NEC provisions.
These questions may involve installation rules that differ from those used in ordinary residential or commercial wiring.
Review signs, special electrical equipment, pools, fountains, fire pumps, and equipment covered in the applicable NEC Article 600 through 695 ranges.
Study emergency systems, standby systems, communications wiring, signaling systems, and selected NEC Article 700 through 830 requirements.
Calculations is the largest category in the published Maryland Master Electrician blueprint.
Practice service and feeder loads, branch-circuit calculations, demand factors, conductor sizing, motor circuits, transformer calculations, voltage drop, raceway fill, box fill, and other master-level electrical mathematics.
Carefully identify which values the problem provides and which quantities you need to calculate.
Many mistakes come from choosing the wrong formula or using the wrong NEC table rather than making a simple arithmetic error.
Largest topic: Calculations, 30 points.
Second largest: Electrical Theory, 20 points.
Combined: 50% of available examination points.
Other subjects: Wiring and Protection, Wiring Methods, General Equipment, Special Occupancies, Special Equipment, and Communications.
Start with the official Maryland Master Electrician examination outline.
It identifies eight categories and shows the exact distribution of the 100 available examination points.
Calculations should receive extra attention because they account for 30 points.
Electrical Theory is the second-largest category, contributing another 20 points.
Begin by practicing Ohm's law, electrical power, resistance, current, voltage, and electrical formulas.
Then work through advanced electrical calculations involving services, feeders, conductor sizing, motors, transformers, demand factors, raceways, and boxes.
Focus on understanding the process rather than memorizing a single sample answer.
A service-load question may use several steps and multiple demand factors. A motor problem may involve different rules for conductors and overcurrent protection.
Practice writing out your calculations clearly.
Next, focus on Wiring and Protection. Review grounding, bonding, services, feeders, branch circuits, and protective devices.
Move through Wiring Methods and Materials, studying cable types, conduit fill, box fill, ampacity, support, and physical protection.
Review motors, transformers, switches, luminaires, appliances, and general-use equipment.
Do not ignore special occupancies or communications. A smaller number of questions can still make the difference between passing and failing.
For codebook study, practice locating NEC articles and reading the entire requirement, including relevant exceptions, table notes, and conditions.
The Maryland Master Electrician Calculations and NEC Combo includes a dedicated electrical calculations guide for repeated math practice.
The Maryland Master Electrician Super Combo adds flash cards and a Maryland-focused study guide.
Use these 2026 NEC materials for supplemental education, but align final exam-specific reference practice with the NEC edition currently authorized by PSI.
During the final preparation week, complete 90-question mock exams using a four-hour timer.
Measure your score in points rather than assuming every question has the same value.
First priority: Calculations, 30 points.
Second priority: Electrical Theory, 20 points.
Third priority: Wiring and Protection, 14 points.
Fourth priority: Wiring Methods and Materials, 13 points.
Final simulation: 90 questions, 100-point scoring, 240-minute timer.
Master electricians need to understand how service equipment, feeders, panelboards, branch circuits, motors, transformers, grounding, and electrical loads work together.
The simplified diagram below illustrates a typical distribution concept that connects several of the exam's major subjects.
Educational diagram only. Not a complete electrical design, wiring plan, or approved installation.
Review the seven-year qualifying experience requirement and determine whether formal electrical education credit may apply.
Collect employment verification, supervision records, training documents, and other evidence required for examination eligibility.
Submit the Maryland Master Electrician examination application and supporting documents through the current PSI online process.
Study the eight official categories and understand why the 90 questions are worth 100 points.
Verify the PSI-approved edition and review the rules governing permitted tabs, highlighting, and reference materials.
Review service loads, feeders, conductors, motors, transformers, raceway fill, box fill, and other common electrical calculations.
Complete the 90-question, 100-point examination within four hours and earn at least 70 points.
Apply for the Master Electrician license, provide required insurance documentation, and follow any applicable local registration procedures.
The Maryland Master Electrician examination totals 100 points. The chart below shows the percentage of those available points assigned to each category.
Total: 100 points across 90 scored questions.
Calculations: 30 points.
Electrical Theory: 20 points through ten two-point questions.
Combined: 50% of available examination points.
Passing: 70 points.
The published PSI Maryland Master Electrician bulletin identifies the 2020 National Electrical Code as the only reference permitted in the examination room.
Contractor Exam Preps also offers 2026 NEC-based preparation materials for current-code education.
These resources serve different purposes. A useful study package is not automatically an approved test-room reference.
| Book or Reference | Edition | Purpose |
|---|---|---|
| National Electrical Code, NFPA 70 | 2020 | Only approved reference listed in the published PSI Master Electrician bulletin. |
| National Electrical Code | 2023 | Newer electrical code education. Not automatically accepted for this exam. |
| National Electrical Code | 2026 | Current-code study, NEC article review, and supplemental preparation. |
| Maryland Master Electrician Study Guide | 2026 NEC Based | Master-level examination preparation and subject review. |
| Electrician Calculations Study Guide | 2026 NEC Based | Service and feeder loads, conductor sizing, motors, transformers, and math practice. |
| Master Electrician Flash Cards | 2026 NEC Based | Practice formulas, terminology, code concepts, and definitions. |
| Maryland Master Electrician Super Combo | 2026 NEC Based | Combines Maryland study guides, electrical calculations, NEC and tabs, and flash cards. |
| Master Electrician Practice Exam Guide | 2026 NEC Based | Repeated practice questions and examination-style review. |
| Official PSI Candidate Bulletin | Current Published Version | Controls examination format, approved books, tab rules, and test procedures. |
Published PSI reference: 2020 NEC.
Contractor Exam Preps 2026 packages: Supplemental study materials.
Study guides: Not allowed inside the testing room.
Final step: Confirm the approved code edition with PSI before the examination.
An open-book Master Electrician examination still requires technical knowledge and good time management.
The NEC provides reference information, but it does not tell you which formula or article to use unless you understand the problem.
Before test day, practice identifying the question's subject and finding the relevant NEC provision quickly.
Focus on the NEC table of contents, definitions, article headings, tables, exceptions, and calculation requirements.
Learn the differences between grounding and bonding, overload and overcurrent protection, conductor ampacity and load, and service versus feeder requirements.
Practice using a timer so you do not spend too long on one difficult question.
A Maryland Master Electrician holds an advanced state credential relevant to electrical installation, supervision, planning, and qualifying electrical business activities.
The scope can involve residential, commercial, industrial, and specialized electrical installations.
Master electricians may work with electrical services, distribution systems, feeders, branch circuits, lighting, motor controls, transformers, emergency systems, and specialized electrical equipment.
They must understand the relationship between electrical loads, conductors, equipment ratings, grounding, bonding, protective devices, and installation conditions.
Master Electricians can also play an important role in electrical contracting businesses.
However, Maryland's licensing system includes insurance and status requirements that can affect which activities an individual is permitted to perform.
The state recognizes insured and uninsured master classifications.
An uninsured Master Electrician authorized to work may be limited to journeyperson-level work and is restricted from pulling permits or supervising journeyperson and apprentice electricians.
An uninsured Master Electrician not authorized to work cannot simply resume electrical work without satisfying the conditions for returning to an authorized status.
Maryland also distinguishes between Master Electricians operating independently and Master Electricians serving as qualifying agents for companies.
Local jurisdictions may require registration or other documentation before allowing permits or regulated electrical contracting activities.
Electrical contractors should verify their insurance, company qualification, registration, and permit requirements before accepting work.
State license: Master Electrician.
Insurance: Applies according to licensing status and business activities.
Uninsured status: May restrict supervision, permits, and work authorization.
Local rules: Permits, inspections, and registrations may apply.
| Classification | Licensing Authority | Main Difference |
|---|---|---|
| Apprentice Electrician | Maryland State Board of Electricians | Entry-level electrical credential requiring supervision. |
| Journeyperson Electrician | Maryland State Board of Electricians | Requires qualifying electrical experience and an exam or valid waiver. |
| Master Electrician | Maryland State Board of Electricians | Advanced license requiring seven years of experience or qualifying approved credit. |
| Insured Master Electrician | Maryland Board | Insurance and other requirements support permitted master-level activities. |
| Uninsured Master Authorized to Work | Maryland Board | Restricted to certain work activities and prohibited from pulling permits or supervising. |
| Uninsured Master Unauthorized to Work | Maryland Board | Work is prohibited until appropriate authorization is restored. |
| Master Examination | PSI | 90 questions, 100 points, four hours, 70% passing. |
| Journeyperson Examination | PSI | Separate exam with 70 scored questions and 210 minutes. |
| Local Electrical Registration | County or Municipality | May apply separately from the statewide Master Electrician license. |
Experience and Education
90 Questions, 100 Points
Post-Exam Requirements
This six-week preparation schedule follows the Maryland PSI Master Electrician examination outline. Give calculations and electrical theory the largest share of your study time because they represent half of the available points.
The Maryland Master Electrician examination can be challenging, even for electricians with many years of field experience.
Master-level testing requires more than recognizing electrical equipment or knowing how to complete familiar installations.
The examination expects candidates to understand advanced electrical concepts and apply NEC requirements accurately.
The official test contains 90 scored questions worth 100 points.
The Electrical Theory category includes ten questions worth two points each.
Calculations contributes 30 additional points.
This means electrical mathematics and theory are major parts of the passing score.
A candidate who is comfortable installing equipment but struggles with formulas may need extra study time.
Service and feeder calculations can be particularly demanding because they may involve several loads, demand factors, and adjustments.
Motor and transformer questions can require careful distinction between current calculations, conductor sizing, overload protection, and other requirements.
Conduit and box fill problems may seem simple until several conductor types or installation details are introduced.
Wiring and Protection also requires detailed code knowledge.
Grounding and bonding questions can be confusing because those terms relate to different electrical safety functions.
Open-book testing helps candidates access the NEC, but time still matters.
With four hours for 90 questions, the average time per question is approximately two minutes and forty seconds.
Some theory questions may be answered quickly, while longer calculations can take significantly more time.
That is why a strong study plan combines formula practice, NEC navigation, timed mock exams, and careful review.
The Maryland Master Electrician Calculations Study Combo provides additional electrical math practice.
The Maryland Master Electrician Flash Card Combo supports repeated questions and review.
Neither product guarantees a passing score, but organized preparation can help candidates identify weak subjects and study more effectively.
Contractor Exam Preps offers Maryland-specific Master Electrician study packages built around the 2026 National Electrical Code.
These products support code-based study, calculations, practice questions, flash cards, and organized exam preparation.
The included 2026 NEC materials do not automatically replace the 2020 NEC listed in Maryland's published PSI examination bulletin.
Study Guides, Calculations, Flash Cards and NEC
Master Study Guide and Tabbed Codebook
Practice Exams and Repeated Review
Additional Calculations Package: Maryland Master Electrician Calculations Study Guides and NEC Combo.
Practice Exam Guide: Maryland 2026 Master Electrician Practice Exams Study Guide.
Retail Code Edition: 2026 NEC.
PSI-Listed Exam Reference: 2020 NEC.
Availability: Check the store for current stock, package contents, and options.
Actual Maryland Master Electrician Super Combo product image hosted directly on ContractorExamPreps.com. The separate credential illustration is educational and is not an official state-issued license.
This Maryland-themed educational credential features a stylized state shape, electrical lightning bolt, panelboard, and Master Electrician examination information.
The accompanying product image comes directly from Contractor Exam Preps and shows the Maryland Master Electrician Super Combo.
• Maryland Master Electrician
• Maryland State Board of Electricians
• Statewide Electrical Licensing
• PSI Master Electrician Examination
• 90 Scored Questions
• 100 Available Points
• 240-Minute Examination
• 70% Passing Standard
• Open-Book Examination
• Published 2020 NEC Reference
• 2026 NEC Supplemental Study
• Seven-Year Experience Pathway
• Possible Education Credit
• Master Electrician License Application
• Electrical Theory
• Ohm's Law
• Electrical Power
• Three-Phase Electrical Systems
• Electrical Calculations
• Service Load Calculations
• Feeder Calculations
• Demand Factors
• Branch Circuits
• Service Equipment
• Conductors and Cables
• Conductor Ampacity
• Grounding and Bonding
• Overcurrent Protection
• Wiring Methods and Materials
• Raceway and Box Fill
• Motors and Motor Controls
• Transformers
• Voltage Drop
• Equipment for General Use
• Special Occupancies
• Special Equipment
• Emergency Power Systems
• Special Communications
• Electrical Safety
• NEC Code Navigation
• Master Electrician Flash Cards
• Master Electrical Practice Exams
• Electrical Contractor Requirements
• Insurance and License Status
• Maryland Local Registration
Maryland Master Electrician Licensing
The Maryland State Board of Electricians, part of the Maryland Department of Labor, issues statewide Master Electrician licenses.
Yes. Maryland licenses Master Electricians statewide. Local jurisdictions may still require registration and permits.
The standard examination pathway requires at least seven years of qualifying electrical experience under approved supervision.
The Board may award up to three years of credit for comparable formal electrical education or professional training, subject to approval.
The standard qualification requires experience under a Maryland licensed Master Electrician or a similarly qualified employee of a governmental unit.
Maryland has reciprocal application pathways for certain jurisdictions, including Virginia, West Virginia, Delaware, and Washington, D.C. Applicants must meet the Board's current conditions.
Not without satisfying applicable insurance, business, permit, and local registration requirements. Different Master Electrician insurance statuses also affect work authority.
Maryland provides uninsured master classifications with specific restrictions. Depending on status, the individual may have limited work authorization or no authorization to work.
Yes. Local authorities may require permits, registration, and inspections in addition to the state license.
Maryland Master Electrician PSI Examination
PSI Services LLC administers the examination for the Maryland State Board of Electricians.
The Maryland Master Electrician examination contains 90 scored questions worth 100 total points.
Ten Electrical Theory questions are worth two points each. The other 80 questions are worth one point each.
The time limit is 240 minutes, or four hours.
70% of available points, which means at least 70 points out of 100.
Yes. The published PSI bulletin identifies the Maryland Master Electrician examination as open book, with specific reference restrictions.
The Maryland Board's examination page lists a $65 fee. Confirm the current amount during registration.
The published PSI bulletin requires a 30-day waiting period after the most recent failed attempt.
NEC Reference Books and Exam Room Rules
The currently published PSI Master Electrician bulletin lists the 2020 National Electrical Code, NFPA 70, as the only permitted examination-room reference.
Do not assume so. Candidates must follow the NEC edition approved by PSI for their scheduled examination.
The 2026 NEC supports current-code education, calculations, article navigation, and supplemental electrical exam preparation. It does not automatically replace the testing-room reference.
No. The published PSI bulletin prohibits study guides in the exam room.
Yes, under the published rules. Handwritten notes or additional papers are not permitted.
Yes. PSI allows qualifying permanent index tabs, including specified adhesive plastic tab types. Follow its current requirements.
No. Removable Post-It flags and tabs containing paper inserts are prohibited by the current published rules.
Master Electrician Exam Subjects and Calculations
Calculations is the largest category, worth 30 of the 100 available points.
Electrical Theory is worth 20 points, consisting of ten questions worth two points each.
Practice service and feeder loads, conductor sizing, motors, transformers, demand factors, voltage drop, raceway fill, box fill, and electrical formulas.
Yes. Services and feeders are important subjects in Wiring and Protection and in calculations.
Yes. Grounding and bonding are major NEC subjects within Wiring and Protection.
The official Master Electrician blueprint lists eight categories.
Yes. Special Occupancies is worth eight points and Special Equipment is worth four points.
Yes. The Special Communications category covers selected systems under NEC Articles 700 through 830 and is worth two points.
Contractor Exam Preps Study Products
Yes. The store offers Maryland Master Electrician study guides, NEC combos, calculations packages, flash cards, and practice examinations.
The package includes a Maryland Master Electrician Study Guide, Electrician Calculations Study Guide, 2026 NEC paperback with tabs, and Master Electrician flash cards.
Yes. A Maryland-specific Calculations Study Guides and NEC Combo is listed on the store.
Yes. The Maryland Master Electrician Flash Card Combo lists twelve practice exams and two full final exams.
No. Study materials support preparation. Examination results depend on individual performance, and the Board determines licensing eligibility.
Watch this related 1ExamPrep Master Electrician video for general electrical examination preparation, NEC navigation, advanced electrical calculations, grounding, bonding, and master-level code study.
This video focuses on broad Master Electrician examination preparation rather than Maryland's exact PSI licensing requirements.
Maryland candidates should continue to follow the official 90-question, 100-point PSI examination blueprint and the currently approved 2020 NEC reference.
Video: 2026 Master Electrician Exam Prep License Study Guide.
Creator: 1ExamPrep.
Subjects: Master Electrician examination study, NEC navigation, electrical theory, calculations, and exam strategies.
Maryland exam: 90 questions, 100 points, four hours, 70% passing.
PSI-listed reference: 2020 NEC.
Reminder: General 2026 NEC study material does not replace Maryland's official examination-room rules.
Use these links to review actual Contractor Exam Preps products, Maryland licensing information, official PSI requirements, and related electrical study resources.
State license: Maryland Master Electrician.
Licensing authority: Maryland State Board of Electricians.
Testing provider: PSI Services LLC.
Questions: 90 scored.
Total points: 100.
Time: 240 minutes.
Passing standard: 70%.
Testing format: Open book.
Published exam reference: 2020 NEC.
Store study packages: 2026 NEC based.
Standard experience: Seven years.
Education credit: Up to three years with Board approval.
Contractor requirements: Insurance and local registration rules may apply.
Preparing for the Maryland Master Electrician examination begins with understanding the state's licensing requirements and the official PSI examination format.
Maryland issues Master Electrician licenses statewide through the Maryland State Board of Electricians.
The Master Electrician credential represents an advanced level of electrical qualification involving technical knowledge, safety, code compliance, and professional responsibility.
Master Electricians may be involved in installation planning, supervision, electrical contracting, equipment selection, permit-related activities, and other authorized electrical work.
However, applicants must first satisfy the licensing requirements established by Maryland law.
The standard examination pathway requires at least seven years of regular and principal electrical work under approved supervision.
The Board may allow up to three years of credit for comparable formal electrical education or professional training.
Applicants should carefully document their experience and obtain confirmation that any requested education credit is accepted.
Once qualified, candidates register for the Maryland Master Electrician examination through PSI Services LLC.
The official examination contains 90 scored questions worth 100 points.
Candidates have four hours to complete the examination and must earn at least 70 points to pass.
One important feature of this exam is its scoring system.
Electrical Theory contains ten questions worth two points each.
Those questions contribute 20 points, while the remaining 80 questions contribute one point each.
Calculations is the largest subject category, accounting for 30 points.
Together, Calculations and Electrical Theory make up half of the entire examination score.
This makes electrical mathematics a central part of Maryland Master Electrician preparation.
Candidates should practice service and feeder loads, conductor sizing, demand factors, motor calculations, transformer relationships, voltage drop, raceway fill, and box fill.
They should also review Ohm's law, power, electrical symbols, equipment, troubleshooting, and basic circuit relationships.
Beyond calculations and theory, the examination covers Wiring and Protection, Wiring Methods and Materials, Equipment for General Use, Special Occupancies, Special Equipment, and Special Communications.
These subjects reflect the broad electrical knowledge expected of an experienced Master Electrician.
The exam is open book, but candidates cannot bring every study resource into the testing room.
The currently published PSI bulletin lists the 2020 National Electrical Code as the only permitted reference.
Study guides, flash cards, loose notes, and unauthorized reference materials are not allowed.
PSI also has specific restrictions on tabs, highlighting, and markings.
Checking the approved NEC edition before purchasing books or taking the exam is extremely important.
Contractor Exam Preps offers Maryland Master Electrician study packages based on the newer 2026 National Electrical Code.
Those materials can help candidates develop stronger code knowledge, practice calculations, and organize their study sessions.
However, newer study products should not be confused with the official examination-room reference.
The Maryland Master Electrician Super Combo includes a Maryland-focused study guide, electrical calculations guide, tabbed 2026 NEC, and Master Electrician flash cards.
The Maryland Master Electrician Study Guide and NEC Combo provides a more focused printed book package.
The Maryland Master Electrician Flash Card Combo supports repeated review with twelve practice examinations and two full final examinations.
A structured six-week study plan can help candidates move through the major examination categories without overlooking important subjects.
Begin with Electrical Theory and the PSI examination outline.
Spend dedicated time on advanced Calculations before reviewing Wiring and Protection, Wiring Methods, Equipment, and special NEC articles.
During the final week, practice complete 90-question examinations using a four-hour timer and the official point-weighting system.
Review missed questions carefully and repeat calculations until the reasoning becomes clear.
After passing the examination, applicants must complete the Maryland licensing process.
Master Electrician business activities may also require insurance documentation, appropriate license status, local registration, and permits.
Passing the test is an important achievement, but it does not automatically replace those requirements.
The larger goal of Master Electrician preparation is to strengthen the knowledge needed for safe and reliable electrical installations.
That includes understanding electrical systems, recognizing hazards, selecting correct equipment, protecting conductors, applying NEC requirements, and making sound technical decisions.
With consistent study, accurate Maryland examination information, strong calculation practice, and suitable reference materials, candidates can prepare more effectively for the Master Electrician licensing examination.
Find Maryland Master Electrician exam prep books, NEC study guides, electrical calculations materials, flash cards, and practice examinations at ContractorExamPreps.com.
