Current Montana Master exam: 80 questions, 240 minutes, 75% passing, open book, administered by PSI after Board approval, currently based on the 2020 NEC, and specifically includes major load calculations.
How Does Montana Master Electrician Licensing Work?
Montana licenses Master Electricians statewide through the Montana State Electrical Board. The Master license reflects advanced responsibility for planning, laying out and supervising electrical installation and repair.
Applicants generally qualify through either 8,000 hours of legally obtained journeyman-level experience in planning, layout or supervision, or through the qualifying accredited electrical-engineering degree route with practical experience.
Exam: 80 questions | 4 hours | 75% passing.
Subjects: National Electrical Code | General Trade Knowledge & Theory | Major Load Calculations.
References: 2020 NEC | Montana Building Codes Amendments | Printreading based on the 2020 NEC.
Contractor path: a Montana Master Electrician is required as the responsible electrician for an unlimited electrical contractor.
Montana Master Electrician Exam Prep Focus Areas
The current official exam sheet identifies broad subjects rather than detailed percentage weights.
| Study Area | What to Study | Why It Matters |
|---|---|---|
| NEC Navigation | Articles, tables, definitions, notes, exceptions and calculations | Open-book code application |
| Major Load Calculations | Dwelling and nondwelling loads, demand factors, services and feeders | Explicit Master exam subject |
| Services & Feeders | Service sizing, feeders, conductor ampacity, protection and grounding | Master-level planning and calculation |
| Grounding & Bonding | Grounding electrode systems, bonding, separately derived systems and fault paths | Safety and design responsibility |
| Motors & Transformers | Motor calculations, overloads, short-circuit protection, transformers and controls | Advanced trade knowledge |
| Wiring Methods | Raceways, conductors, boxes, fill, derating and installation requirements | Planning and supervision |
| Plan Reading | Electrical drawings, symbols, layouts and system interpretation | Approved exam reference and Master responsibility |
| Montana Rules & Amendments | State amendments, licensing rules and responsible-electrician duties | State-specific licensing knowledge |
Montana Master Electrician Exam Breakdown
Licensing AuthorityMontana State Electrical Board
Exam VendorPSI
Questions80 questions
Time4 hours | 240 minutes
Passing Score75%
FormatOpen book
Current Code2020 National Electrical Code
Other ReferencesMontana Building Codes Amendments + Printreading based on 2020 NEC
Exam SubjectsNEC + General Trade Knowledge & Theory + Major Load Calculations
Primary Experience Route8,000 hours of qualifying journeyman-level planning, layout or supervision
Engineering RouteAccredited electrical engineering degree + 2,000 practical hours
Question PaceAbout 3 minutes per question
Exam Prep View Montana Master Electrician prep
Montana Master Electrician and Unlimited Electrical Contractor Path
The Master Electrician license is an individual advanced credential. The unlimited electrical contractor is a separate Montana business license.
Master Electrician: plans, lays out and supervises electrical installation and repair.
Unlimited contractor: requires a Montana-licensed Master Electrician as the full-time responsible electrician.
Unlimited scope: residential, commercial, industrial and institutional electrical work.
Business compliance: workers compensation and unemployment insurance compliance or a qualifying independent-contractor exemption is required.
Montana Master Electrician Study Priorities
These bars are preparation priorities, not official Montana Board scoring percentages.
NEC Navigation and Code ApplicationHighest Priority
Major Load CalculationsHighest Priority
Services and FeedersVery High Priority
Grounding and BondingVery High Priority
Motors, Transformers and ControlsHigh Priority
Wiring Methods and ConductorsHigh Priority
Plan ReadingHigh Priority
Montana Rules and AmendmentsHigh Priority
Montana Master Electrician Exam References
Use the exact current Montana references for test day. The newer 2026 NEC resources are for current-code education and broader mastery.
| Reference | Current Use | Preparation Note |
|---|---|---|
| 2020 National Electrical Code | Primary Master licensing-exam code reference | Use for test-specific code navigation and calculations |
| Montana Building Codes Amendments | Approved state-specific reference | Review Montana modifications and state code details |
| Printreading by David L. Hittinger | Approved print-reading reference based on 2020 NEC | Practice interpreting plans and electrical layouts |
| 2026 NEC Master Study Materials | Current-code education | Useful for long-term code mastery, but the current Montana exam remains based on the 2020 NEC |
Your Montana Master Electrician Licensing Roadmap
Document the advanced experience, obtain Board approval, master the 2020 NEC and calculations, pass PSI, then use the license for supervisory or unlimited contractor responsibility.
1
Meet Master experience requirements
Document 8,000 hours of qualifying journeyman-level planning, layout or supervisory experience, or use the qualifying electrical-engineering route.
2
Apply to the Montana State Electrical Board
Submit the Master application and supporting experience or education documents.
3
Receive Board approval
Only Board-approved candidates may schedule the Master Electrician examination with PSI.
4
Prepare the 2020 NEC references
Study the 2020 NEC, Montana amendments and approved print-reading reference.
5
Master major load calculations
Practice services, feeders, demand factors, motors, transformers and multi-step NEC calculations.
6
Pass the PSI Master exam
Complete 80 questions in four hours and earn at least 75%.
7
Advance into contractor responsibility
Use the Master license as the responsible-electrician credential required for a Montana unlimited electrical contractor.
Six-Week Montana Master Electrician Exam Prep Plan
Week 1
2020 NEC and Exam Setup
- Review exam rules
- Prepare code references
- Study Montana amendments
- Take a diagnostic Master exam
Week 2
Major Load Calculations
- Dwelling loads
- Nondwelling loads
- Demand factors
- Service and feeder sizing
Week 3
Services, Feeders and Grounding
- Service conductors
- Feeders
- Grounding and bonding
- Fault-current concepts
Week 4
Motors and Transformers
- Motor conductors
- Overloads
- Controllers
- Transformer calculations
Week 5
Wiring Methods and Printreading
- Raceways and conductors
- Boxes and fill
- Electrical plans
- Special equipment
Week 6
Full Master Simulation
- 80-question practice exams
- Four-hour pacing
- Major calculation review
- Final weak-area study
Montana Master Electrician Open-Book Exam Prep Strategy
Do this during exam prep
- Use the current 2020 NEC test reference
- Practice major load calculations repeatedly
- Pre-highlight and annotate permitted materials
- Learn key NEC tables and demand factors
- Practice printreading
- Complete full four-hour simulations
Avoid these mistakes
- Bringing only a 2026 NEC to the exam
- Ignoring major load calculations
- Adding notes during testing
- Bringing loose papers
- Spending too long on one calculation
- Confusing the Master license with the contractor business license
Open-book strategy: 80 questions in 240 minutes averages about 3 minutes per question. Move quickly through direct code questions, flag long calculations, and return once the faster questions are complete.
Montana Master Electrician Contractor Exam Prep Options
Montana Master Online Exam Prep
2020 NEC Test-Specific Preparation
- Open-book strategy
- NEC 2020 focus
- Master-level code application
- Trade knowledge review
- Calculation practice
2026 Master Ultimate Combo
Current NEC + Study Guides + Course
- 2026 NEC education
- Master study guide
- Calculations study guide
- Flash cards
- Online course preparation
Master + Calculations + NEC Combo
Advanced Calculation Preparation
- Master study guide
- Electrical calculations
- NEC code study
- Service and feeder math
- Motor and transformer calculations
Master Electrician and Unlimited Electrical Contractor Are Different Montana Licenses
The Montana Master Electrician license is an individual advanced credential. The unlimited electrical contractor is a separate business license that requires a Montana Master as the full-time responsible electrician.
· Master exam: 80 questions, 4 hours, 75%
· Current exam code: 2020 NEC
· Exam includes major load calculations
· Master is required as responsible electrician for unlimited contractor licensing
· Unlimited contractor scope includes residential, commercial, industrial and institutional work
Montana Master Electrician Contractor Exam Prep FAQ
Montana Master Electrician Exam
The Montana State Electrical Board licenses Master Electricians statewide.
The Montana State Electrical Board approves candidates, and PSI administers the exam.
The current official exam information lists 80 questions.
Candidates receive 240 minutes, or 4 hours.
The current official Montana exam information lists a 75 percent passing score.
Yes. The current Master Electrician exam is open book.
The Montana State Electrical Board currently bases its electrical licensing exams on the 2020 National Electrical Code.
The current exam information lists the 2020 NEC, Montana Building Codes Amendments, and Printreading by David L. Hittinger based on the 2020 NEC.
The official exam description identifies National Electrical Code knowledge, general trade knowledge and theory, and major load calculations.
The current exam information permits personal highlighting, underlining and notes completed before the examination. Writing or marking references during the exam is prohibited.
Yes. The current Montana exam sheet allows tabs and indexes with the 2020 NEC.
No. Additional loose or attached papers are not permitted with the approved references.
Yes. A silent, nonprinting, nonprogrammable calculator that is not designed for preprogrammed electrical calculations is permitted.
Experience and Master-Level Study
One route requires at least 8,000 hours of legally obtained journeyman-level experience in planning, laying out or supervising electrical installation and repair.
Yes. Montana law also allows a graduate electrical engineer from an accredited college or university to qualify with at least 2,000 hours of legally obtained practical electrical experience.
Montana defines journeyman-level experience as being recognized as a journeyman electrician by a legally authorized jurisdiction or having at least 8,000 hours of practical experience.
With 80 questions in 240 minutes, the average pace is about 3 minutes per question.
The official Master Electrician exam description specifically lists major load calculations in addition to NEC knowledge and general trade theory.
The current official exam sheet reviewed for this page does not publish detailed topic percentages. Study-priority bars on this page are preparation guidance, not official scoring weights.
The 2026 NEC materials provide current-code education and advanced master-level study. Candidates should still prepare with and bring the 2020 NEC currently required for the Montana licensing exam.
Unlimited Electrical Contractor Path
No. Master Electrician is an individual license. An unlimited electrical contractor is a separate business license that requires a Montana-licensed Master Electrician as the responsible electrician.
A Montana Master Electrician can serve as the responsible electrician for an unlimited electrical contractor.
The current Montana contractor materials allow an unlimited electrical contractor to perform residential, commercial, industrial and institutional electrical work.
The responsible electrician is the Montana-licensed electrician engaged full time who is responsible for all licensed electrical work performed by the contractor.
Montana contractor licensing requires proof of compliance with workers compensation and unemployment insurance requirements or a qualifying independent-contractor exemption.
Reciprocity, Temporary Permits and Renewal
Montana's current reciprocity and endorsement rule applies to residential and Journeyman Electrician licensing, not Master Electrician licensing.
A Master Electrician applicant may be issued a Journeyman temporary practice permit under the Board's temporary-permit rules. It does not allow the applicant to act as the responsible electrician for a contractor.
Active licensees must complete 16 hours of Board-approved continuing education each renewal period, including at least 8 hours covering NEC updates.
The Board uses a biennial renewal cycle. For the 2026 cycle, renewal opened May 15 and closed July 15.
Prioritize NEC navigation, service and feeder calculations, major load calculations, grounding and bonding, conductors, overcurrent protection, motors, transformers, wiring methods, plan reading and Montana amendments.
Practice dwelling and nondwelling loads, services, feeders, demand factors, conductor sizing, motors, transformers, voltage drop, raceway fill and other multi-step NEC calculations under timed conditions.
Submit your Master Electrician application and experience documentation to the Montana State Electrical Board and wait for Board approval before scheduling with PSI.
1 Exam Prep Master Electrician Exam Prep 2026 NEC Updates
Explore Montana Master Electrician Contractor Exam Prep Resources
Montana Master Electrician Online Exam Prep 2026 Montana Master Electrician Ultimate Combo Montana Master + Calculations + NEC Combo Montana Master Study Guide + NEC Combo Montana State Electrical Board Montana Master Electrician License Information Montana Electrical Exam Information Montana 2020 NEC Exam Information Sheet Montana Electrical Laws and Rules Montana Unlimited Electrical Contractor Application Montana Electrical Contractor Licensing Montana Electrical Continuing Education Montana Electrical Board FAQ Montana Electrical Forms and Renewals
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Montana Master Electrician Exam Prep
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