- Why the Ten Subject Headings Matter
- How the Maine Exam Is Built
- Question Allocations at a Glance
- Domains 1-3: Theory, Protection and Circuits
- Domains 4-6: Methods, Motors and General Equipment
- Domains 7-10: Special Topics and Communications
- Open-Book Rules and the 2023 NEC
- Eligibility, Early Testing and Full Licensure
- Sequencing Your Study by Domain
- Scheduling, Remote Testing and Retakes
- Frequently Asked Questions
- The Maine journeyman exam has 80 multiple-choice questions, 180 minutes, and a 70% passing score.
- Wiring & Protection is the largest domain at 16 questions; Special Conditions and Communication Systems carry 2 each.
- Percentage weights are not published, so plan by question counts rather than invented percentages.
- The exam is open book with a softcover 2023 NEC, even though 2026 NEC installation rules took effect July 1, 2026.
Why the Ten Subject Headings Matter
Most candidates preparing for the Maine Journeyman Electrician License Exam (ME-JE) start by buying a code book and reading it front to back. That approach feels thorough, but it ignores the one document that tells you how the exam is actually organized: the State of Maine Office of Professional and Occupational Regulation Candidate Information Bulletin, identified as MOPOR-2026.04.17. Page 4 of that bulletin lists ten official examination subject headings, along with how many questions each one receives.
These are exam subject headings, not preparation-curriculum headings. That distinction matters. A prep course may group topics however it likes, but the exam draws its 80 questions from these ten buckets in fixed amounts. If you know the buckets, you can spend your limited study hours where the points are.
This guide walks through all ten, explains how the allocations should shape your preparation, and clears up several points that trip candidates up: the 2023 NEC exam reference versus the 2026 NEC installation rules, the open-book restrictions, and the difference between being allowed to test and being fully licensed. For a broader preparation plan, pair this article with our ME-JE study guide.
How the Maine Exam Is Built
The Maine Electricians' Examining Board oversees the journeyman credential, and the official examination is delivered by Prov, Inc. Here is the format at a glance:
- Delivery: Computer-delivered, multiple choice
- Length: 80 questions
- Time: 180 minutes
- Passing score: 70%
- Exam fee: $90 (a separate fee from licensing)
- Where: Prov testing centers or live remote proctoring through Examroom
That works out to roughly two and a quarter minutes per question, which is generous for an open-book exam only if you can find answers quickly. Candidates who have not practiced navigating the code book tend to burn time on lookup questions, not on the electrical reasoning itself. A 70% passing score on 80 questions means you need to answer at least 56 correctly. For more on how that threshold works, see our breakdown of the ME-JE passing score, and note that a passing-score requirement is not the same thing as a pass rate. We have not verified official cohort pass-rate statistics, so treat any quoted pass rate with caution; our pass rate article explains what the available data can and cannot tell you.
Question Allocations at a Glance
The bulletin publishes question counts per domain. It does not publish percentage weights, and we have not inferred any, so the table below sticks to the official counts.
| Domain | Subject Heading | Questions |
|---|---|---|
| 1 | General Electrical Theory & Principles | 10 |
| 2 | Wiring & Protection | 16 |
| 3 | Service Feeders and Branch Circuits | 5 |
| 4 | Wiring Methods & Materials | 12 |
| 5 | Motors & Controls | 11 |
| 6 | Equipment for General Use | 12 |
| 7 | Special Occupancies | 5 |
| 8 | Special Equipment | 5 |
| 9 | Special Conditions | 2 |
| 10 | Communication Systems | 2 |
| Total | 80 | |
Domains 1-3: Theory, Protection and Circuits
Domain 1: General Electrical Theory & Principles (10 questions)
This domain covers the foundational math and physics behind everything else on the exam. Even though the exam is open book, theory questions are the ones where a code lookup will not rescue you, because you must set up and solve the problem yourself with a simple four-function calculator.
- Ohm's law and power relationships in series, parallel and combination circuits
- Single-phase and three-phase relationships, including how voltage and current behave in each
- Resistance, impedance and the effect of conductor length and size
- Basic transformer relationships and voltage-to-current tradeoffs
- Efficiency, power factor concepts and unit conversions
Because only a four-function calculator is permitted, practice your arithmetic without a scientific calculator's square-root or memory shortcuts. Work through problems by hand and confirm you can complete multi-step calculations cleanly under time pressure.
Domain 2: Wiring & Protection (16 questions)
This is the single largest domain on the exam and deserves the most study hours. Wiring and protection questions typically require you to apply code rules for conductors, overcurrent protection, grounding and bonding to a described installation.
- Conductor sizing, ampacity adjustment and correction factors
- Overcurrent protective devices and their ratings
- Grounding and bonding requirements, including grounding electrode systems
- Ground-fault and arc-fault protection requirements
- Surge protection and general protection concepts
With 16 questions, this heading alone represents one-fifth of the exam. A candidate who is comfortable here has a real cushion against weaker areas elsewhere.
Domain 3: Service Feeders and Branch Circuits (5 questions)
Although it carries only five questions, this domain feeds directly into calculation-heavy work that overlaps with Domain 2 and Domain 4.
- Service and feeder load calculations
- Branch-circuit requirements for general lighting, receptacles and appliances
- Demand factors and how they apply to different load types
- Required circuits and permitted loads on a branch circuit
Candidates often underestimate the time a load calculation takes. Even at five questions, one or two multi-step calculations can consume a disproportionate share of your clock, so practice them until the code-book navigation becomes automatic.
Domains 4-6: Methods, Motors and General Equipment
Domain 4: Wiring Methods & Materials (12 questions)
This heading tests whether you know which raceway, cable or enclosure is permitted in a given situation and how it must be installed.
- Raceway types and their permitted uses and limitations
- Cable assemblies and installation requirements
- Box and enclosure fill, support and securing requirements
- Conduit fill and bending considerations
- Installation environments such as wet, damp or exposed locations
Domain 5: Motors & Controls (11 questions)
Motor questions are a well-known stumbling block because they chain together several code rules: conductor sizing, overload protection, short-circuit and ground-fault protection, and disconnecting means.
- Motor branch-circuit conductor sizing and protection
- Overload protection and its relationship to motor nameplate data
- Motor controllers, disconnecting means and control circuits
- Multiple-motor and combination-load considerations
- Starting and running current concepts
At 11 questions, this domain is a high-value target. Because the rules interlock, studying them as a connected workflow, from nameplate to conductor to protection to disconnect, works better than memorizing isolated tables.
Domain 6: Equipment for General Use (12 questions)
This heading covers common equipment found across most installations, and it ties together installation, labeling and protection requirements.
- Luminaires, lampholders and lighting equipment
- Appliances and their branch-circuit and disconnect requirements
- Switchboards, panelboards and related equipment
- Transformers and their protection and installation rules
- Generators and other equipment used in everyday installations
Key Takeaway
Domains 4, 5 and 6 together carry 35 questions. Combined with the 16 from Wiring & Protection, these four headings are where most of your passing margin will come from, so build your first month of study around them.
Domains 7-10: Special Topics and Communications
The last four headings account for just 14 questions combined, but they can be the difference between passing and failing if you are near the 56-correct threshold. They also tend to be less familiar to candidates who work mainly in one type of installation.
Domain 7: Special Occupancies (5 questions)
These questions address places where the use of the space creates added risk or requirements.
- Hazardous (classified) locations and their basic classification concepts
- Healthcare facilities and other occupancy-specific rules
- Commercial garages, assembly occupancies and similar spaces
- How occupancy type modifies general wiring rules
Domain 8: Special Equipment (5 questions)
Special equipment questions focus on installations with their own dedicated code articles.
- Signs and outline lighting
- Elevators, cranes and similar powered equipment
- Pools, spas and fountains, including bonding requirements
- Solar photovoltaic and other specialized systems
Domain 9: Special Conditions (2 questions)
With only two questions, this heading is the lowest priority, but it is quick to learn at a basic level.
- Emergency systems, standby systems and legally required systems
- Interconnected power sources and related conditions
Domain 10: Communication Systems (2 questions)
Also just two questions. The goal here is familiarity with the relevant article and its general rules rather than deep mastery.
- Communications circuit installation basics
- Separation and grounding concepts for low-voltage and communications wiring
A sensible approach to Domains 7 through 10 is to learn where each topic lives in the code book, understand the major rules at a conceptual level, and rely on the open-book format to confirm specifics. You do not need to memorize these articles, but you do need to know how to find them quickly.
Open-Book Rules and the 2023 NEC
The Maine journeyman exam is open book, but the rules are specific and strictly enforced:
- Permitted: A softcover 2023 NEC
- Excluded: The NEC Handbook
- Allowed markings: Existing handwriting, highlighting, underlining and tabs
- Prohibited: Inserted or attached material, such as loose pages, sticky notes with added content or taped-in reference sheets
- Calculator: A simple four-function calculator only
Pay close attention to the version. Maine adopted the 2026 NEC for installations effective July 1, 2026, but the exam reference remains the 2023 NEC. An installation-code adoption is not an exam-version announcement. If you buy a 2026 code book on the assumption that it is now the exam reference, you will arrive at the test with the wrong book. Always confirm the current exam reference with the Board and the Prov candidate bulletin before you purchase materials. For a deeper look at what to bring and how to tab it, see our ME-JE cheat sheet for a quick-reference review of key facts.
Eligibility, Early Testing and Full Licensure
Board approval is required before you can schedule the exam. The standard eligibility pathway requires 8,000 licensed apprentice or helper work hours and 576 approved study hours, including a 45-hour current-NEC course. Several alternatives exist:
| Pathway | Work Hours | Study / Course Requirement |
|---|---|---|
| Standard | 8,000 licensed apprentice/helper hours | 576 approved study hours, including a 45-hour current-NEC course |
| Accredited two-year electrical high-school program | 7,000 qualifying supervised hours | 45 NEC hours |
| Maine community-college or Corrections electrical program | 4,000 qualifying supervised hours | 45 NEC hours |
| Approved apprenticeship | 8,000 work hours | At least 576 study hours and 45 NEC hours |
There is an important nuance about timing. Qualifying college or Corrections graduates may test upon graduation, and qualifying apprentices may test after completing approved study and 4,000 work hours, before they meet the full licensure hours. However, passing early does not itself grant the unrestricted journeyman license. Think of it in three separate states: eligible to test, journeyman-in-training, and fully licensed. The exam result is one requirement among several. Our ME-JE requirements guide covers each pathway in more detail.
Reciprocity is a separate route. It requires a license from an agreement state, that state's written examination, and at least six years of active electrical work.
Sequencing Your Study by Domain
The allocation table suggests a clear ordering principle: start with the heaviest domains and the ones that build the skills other domains depend on. Here is one way to apply that logic, offered as a framework rather than a rigid schedule.
Theory and Protection Foundations
- Domain 1: drill Ohm's law, power and three-phase math by hand on a four-function calculator
- Domain 2: begin conductor sizing, ampacity adjustments, overcurrent protection and grounding and bonding
Circuits and Methods
- Domain 3: practice service, feeder and branch-circuit load calculations
- Domain 4: raceway, cable and box-fill rules
Motors and General Equipment
- Domain 5: work motor problems end to end, from nameplate to disconnect
- Domain 6: luminaires, appliances, panelboards, transformers and generators
Special Topics and Full Review
- Domains 7-10: learn where each article lives and the major rules
- Timed mixed sets across all domains, with code-book navigation drills
The reasoning is simple. Domains 1 and 2 build the vocabulary and calculation habits you will use everywhere else. Domains 3 through 6 are the bulk of the exam and benefit from repetition. Domains 7 through 10 are narrower and can be learned faster once your code-book navigation is strong. Throughout, take timed practice sets that mimic the 180-minute window, and use original practice questions rather than relying on memorized answers. For cost and pricing context as you plan your preparation budget, see our certification cost breakdown, and when you are ready to test your knowledge, head to our practice test site.
Scheduling, Remote Testing and Retakes
Once the Board approves your eligibility, you can schedule the exam. Testing is available at Prov centers or through Examroom live remote proctoring. If you choose remote proctoring, review the technical and environmental requirements well in advance, since a testing-room problem on exam day is a distraction you do not need. We cover scheduling and windows in more detail in our exam dates and scheduling guide.
If you do not pass, Maine electrician retesting has no stated attempt restriction within the two-year authorization window. Each attempt requires another exam fee. That makes a failed attempt a real cost, so it pays to prepare thoroughly the first time. Use the score feedback you receive to identify which domains cost you points and adjust your study plan accordingly.
Keep fees straight in your mind: the exam fee is $90, while the standard initial license costs $150 plus a $21 SBI criminal-history check. Biennial renewal is $150. The license renews every two years, and the 15-hour NEC update follows the Board's code-update cycle rather than being an automatic requirement to repeat the course at every biennial renewal. Because the exam and the license are separate steps, budget for both.
Frequently Asked Questions
The question allocations in Domain 1 to 10 order are 10, 16, 5, 12, 11, 12, 5, 5, 2 and 2, totaling 80. Wiring & Protection is the largest at 16 questions, while Special Conditions and Communication Systems each have 2.
No. The candidate bulletin publishes question counts per subject heading, not percentage weights. You can plan your study around those counts, but any specific percentage figure you see elsewhere would be an inference rather than an official number.
Bring a softcover 2023 NEC. The NEC Handbook is excluded. Although Maine adopted the 2026 NEC for installations effective July 1, 2026, the exam reference remains the 2023 NEC, so confirm the current reference with the Board and Prov bulletin before buying materials.
Existing handwriting, highlighting, underlining and tabs are permitted. Inserted or attached material is prohibited. Prepare your book in advance and do not plan to add loose sheets or attachments on exam day.
No. Qualifying college or Corrections graduates and qualifying apprentices may test before meeting full licensure hours, but passing early does not itself grant the unrestricted journeyman license. You still need to satisfy the remaining requirements. Review the requirements guide for the details of each pathway.
Understanding the ten domains, and especially their question counts, turns a vague study project into a targeted plan. Anchor your preparation to the official bulletin, practice with the 2023 NEC you will actually use, and spend your hours where the points are. If you want to benchmark your readiness across all ten headings, take a timed set at the ME-JE Exam Prep practice test site.