ME-ME Exam Domains 2026: Complete Guide to All 10 Content Areas

Domain Overview: How the 100 Questions Break Down

The Maine Master Electrician License Exam (ME-ME) is built from 100 multiple-choice questions administered over four hours through Prov, either at a physical test center or via Examroom remote proctoring. Unlike exams that hide their blueprint, Maine's published subject counts are stated directly out of 100 - so the percentage weight of each domain is also the exact number of questions you'll see from that area. That makes planning your prep unusually precise if you know how to read the breakdown.

Two domains dominate the test. Wiring Methods & Materials (24%) and Wiring & Protection (19%) together account for 43 of the 100 questions - nearly half the exam. If you master nothing else, mastering these two domains moves your score more than any other single decision you'll make. The remaining eight domains range from 2% to 15%, and while none of them can be ignored, they should be studied in proportion to their weight, not treated as equals.

For a full breakdown of how these weights translate into a pass/fail outcome, see our ME-ME Passing Score guide, and for a realistic assessment of how tough the exam feels in practice, read How Hard Is the ME-ME Exam?

Domain 10: Wiring Methods & Materials (24%)

At 24% of the exam - 24 questions - this is the single heaviest domain on the ME-ME. It covers the physical installation side of electrical work: how conductors, raceways, boxes, and enclosures are selected, sized, and installed under the 2023 NEC. Because this domain is so broad, candidates often underestimate how many NEC articles it actually touches.

Because this domain draws so heavily on tables and article cross-references, it's the best place to practice your tab-and-highlight system before test day - see the book-marking rules under Exam Format below.

Domain 9: Wiring & Protection (19%)

Wiring & Protection is the second-largest domain at 19% (19 questions), and combined with Wiring Methods & Materials, these two domains are worth 43 points - meaning a candidate could pass a large share of the entire required 70% score just by dominating these two areas alone.

Domain 1: General Electrical Knowledge (15%)

General Electrical Knowledge sits at 15% (15 questions) and functions as the foundation domain - definitions, general NEC requirements, and the code's organizational logic. Questions here test whether you understand how the NEC is structured well enough to navigate it quickly under time pressure, which matters given the open-book, four-hour format.

• NEC Article 100 definitions and scope statements
• General requirements found in Chapter 1 and Chapter 9 tables
• Voltage classifications and general wiring space requirements
• Working space and clearance requirements around equipment

Because this domain is essentially "how to use the code book," it pairs naturally with practicing under real exam conditions. Our full-length ME-ME practice test platform simulates the same open-book, time-pressured format so you build the navigation speed this domain rewards.

Domain 3: Equipment for General Use (15%)

Equipment for General Use is tied with General Electrical Knowledge at 15% (15 questions), covering the equipment installers encounter on nearly every job: switches, receptacles, appliances, and general-use equipment installation requirements.

Together, Domains 1 and 3 add another 30 questions on top of the 43 from Wiring Methods/Wiring & Protection - meaning four domains alone account for 73 of the 100 questions on the ME-ME.

Domain 7: Special Equipment (7%)

At 7% (7 questions), Special Equipment covers installations that fall outside standard branch-circuit wiring - equipment with its own dedicated NEC article, such as specific appliances, machinery, or electrically operated systems that require unique installation rules.

• Article-specific requirements for named special equipment categories
• Disconnect and overcurrent protection unique to special equipment
• Installation clearances specific to the equipment type

Domain 8: Special Occupancies (6%)

Special Occupancies is worth 6% (6 questions) and tests knowledge of wiring requirements in locations with elevated hazard classifications - spaces where standard wiring methods don't apply due to the presence of hazardous materials, moisture, or other risk factors.

Domains 2, 4, 5 & 6: The Smaller-Weight Areas

Four domains sit at the low end of the blueprint - each worth only 2% to 4% of the exam. They should not be skipped, but they don't deserve equal study time to the major domains above.

Service Feeders and Branch Circuits covers load calculations and feeder/branch-circuit sizing basics. Motors & Controls covers motor circuit conductor sizing, overload protection, and disconnect requirements. Special Conditions covers emergency systems and standby power provisions. Communication Systems, the smallest domain on the exam, covers low-voltage and communications wiring rules that are distinct from power wiring methods.

Sequencing Your Study Around Domain Weight

Because the ME-ME blueprint is public and stated in exact question counts, you can build a study sequence that mirrors the exam's actual point distribution instead of guessing. A simple weighted approach: start with the two heaviest domains, move to the two 15% domains, then sweep through the mid-weight and small domains before your final review pass.

For a more detailed week-by-week plan tied to the 45-hour NEC course requirement and other eligibility steps, see our ME-ME Study Guide, and confirm you meet the hour and course prerequisites before scheduling in ME-ME Requirements 2026.

Exam Format, Book Rules, and the 2023 NEC

Understanding the domains only helps if you also understand exactly how the exam is delivered. The ME-ME is a computer-based, open-book, multiple-choice exam: 100 questions, four hours, 70% needed to pass. The exam references the softcover 2023 NEC specifically - the hardcover NEC Handbook is not permitted, even though Maine's separate adoption of the 2026 NEC for actual field installations begins July 1, 2026. Don't confuse the two: study and test with the 2023 softcover.

Other logistics worth locking in early: the exam fee is $90, you'll need current government-issued photo ID, and only a simple four-function calculator is allowed - no scientific or programmable models. Testing happens through Prov, either at a physical test center or remotely via Examroom, and Board approval must be granted before you can schedule a seat. If your plans change, cancellations or reschedules require at least three business days' notice.

Eligibility to sit for the exam runs through one of several tracks - 12,000 hours as a licensed helper/apprentice, 4,000 journeyman hours, or 6,000 journeyman-in-training hours, each paired with 576 hours of approved study, plus a 45-hour NEC course completed within two years of application. Retakes are permitted within the two-year testing window if needed. Full cost details, including the $150 initial license fee, $21 criminal-history report, and $150 two-year renewal, are broken down in ME-ME Certification Cost 2026.

If you're still weighing whether the license and the study investment are worth pursuing, our ROI analysis and salary guide lay out the practical upside, while ME-ME Exam Dates 2026 covers scheduling windows in detail. To drill the actual question style across all 10 domains before test day, run through timed sets on our ME-ME practice exam platform.

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