- What the MD-ME Exam Actually Tests
- Exam Format and Scoring Mechanics
- The Eight Content Domains
- Registration, Fees, and Eligibility
- What You Can Bring Into the Testing Room
- If You Don't Pass on the First Try
- A Realistic Study Timeline
- After You Pass: Licensing, Renewal, and Insurance
- Frequently Asked Questions
- The MD-ME exam is 90 questions worth 100 points, open-book, computer-delivered, with a 4-hour limit.
- You need a 70% passing score, and ten Electrical Theory questions carry double weight at two points each.
- Calculations is the largest of the eight domains, so it deserves the most study hours.
- The exam fee is $65, and only the 2020 NEC is permitted as a testing-room reference.
What the MD-ME Exam Actually Tests
The Maryland Master Electrician License Exam (MD-ME) is administered by the Maryland State Board of Electricians through PSI, the third-party testing vendor that delivers the computer-based exam at approved testing centers. Passing this exam is the final gate standing between a licensed journeyman-level electrician and full master electrician status in Maryland - a designation that allows a licensee to pull permits, supervise crews, and legally take on higher-value contracting work.
Unlike a purely academic certification exam, the MD-ME is built around real code application. It assumes you already know how to pull wire and terminate a panel; what it tests is whether you can correctly apply the 2020 National Electrical Code (NEC) under time pressure, interpret ambiguous scenario questions, and run calculations without a calculator error costing you the whole question. If you're building your first study plan, start with our MD-ME Study Guide 2026 for a full walkthrough, and pair it with the MD-ME Exam Domains Guide to see exactly how content is distributed across the test.
Exam Format and Scoring Mechanics
The MD-ME is a computer-delivered, open-book exam consisting of 90 questions worth a combined 100 points. You have a 4-hour time limit to complete it, and a score of 70% is required to pass. Most questions are worth one point, but ten Electrical Theory questions are weighted at two points each - meaning theory mistakes cost you more than an average miss elsewhere on the test.
PSI may also insert 5 to 10 unscored experimental questions into your exam. These are indistinguishable from scored questions, so there's no strategic value in trying to guess which ones don't count - just answer every question as if it matters, because functionally, you can't tell the difference.
For a deeper breakdown of what the 70% threshold actually means in terms of points and questions you can afford to miss, see the MD-ME Passing Score guide. If you're also weighing how tough this exam is relative to other trade licensing exams, our difficulty guide covers that comparison in detail.
Key Takeaway
Because Electrical Theory questions are worth double points, treat that domain as higher-stakes than its question count alone suggests - a handful of theory errors can meaningfully drag down your score.
The Eight Content Domains
Maryland's exam blueprint spans eight domains. Understanding how they're weighted - and which ones show up most often in scenario-based questions - should directly shape how you allocate study time.
Domain 8: Calculations
Calculations is the largest domain on the exam, covering load calculations, conductor sizing, voltage drop, service sizing, and demand factor application. Because it's open-book, the challenge isn't memorizing formulas - it's knowing exactly which NEC table or section to reference quickly under time pressure.
- Practice locating dwelling and commercial load calculation tables without hesitation
- Work multi-step problems that combine demand factors with conductor ampacity
- Time yourself - calculation questions eat clock time faster than any other domain
Domain 1: Electrical Theory
Covers Ohm's Law, power formulas, series and parallel circuits, and three-phase fundamentals. Because these ten questions are worth two points each, a weak grasp of theory basics has an outsized effect on your final score.
- Drill power and Ohm's Law formulas until they're automatic
- Review three-phase power calculations specifically - they're a common weak spot
Domains 2-4: Wiring, Protection, Methods, and Equipment
These domains form the backbone of day-to-day code compliance: overcurrent protection, grounding and bonding, conductor installation methods, and equipment requirements for general use.
- Know grounding electrode conductor sizing cold
- Understand where different wiring methods are permitted versus prohibited
Domains 5-7: Special Occupancies, Special Equipment, Special Communications
These cover less frequent but scenario-heavy topics: hazardous locations, health care facilities, signage, HVAC equipment, and low-voltage communications systems.
- Focus on the occupancy types most common in your region's commercial work
- Don't ignore these domains just because they feel niche - they still carry real points
For a domain-by-domain study allocation strategy, the MD-ME Exam Domains Guide goes deeper than we can here, and it's worth reading before you finalize your study schedule.
Registration, Fees, and Eligibility
Before you can sit for the MD-ME, the Maryland State Board of Electricians requires seven years of qualifying electrical-services experience gained under a licensed master electrician or a qualified government employee. If you've completed approved formal study or training, you may apply up to three years of credit toward that seven-year requirement - a detail that surprises a lot of candidates who assume field hours are the only path.
The exam fee itself is $65, paid through the PSI registration process once your eligibility is approved by the Board. For a full accounting of every fee involved in becoming a Maryland master electrician - not just the exam fee, but licensing costs on both ends - check the MD-ME Certification Cost breakdown. If you're still confirming whether your experience and training combination qualifies you to apply, the MD-ME Requirements guide walks through eligibility in detail.
| Item | Detail |
|---|---|
| Exam fee | $65 |
| Question count / points | 90 questions / 100 points |
| Time limit | 4 hours |
| Passing score | 70% |
| Experience requirement | 7 years qualifying experience (up to 3 years creditable via approved training) |
| Original master license fee | $25 |
| License renewal fee | $31.50 |
What You Can Bring Into the Testing Room
The MD-ME is open-book, but "open-book" doesn't mean "bring anything." The current PSI bulletin permits only the 2020 NEC as your reference during the exam. You're allowed to bring a copy with permanent tabs, highlighting, and underlining already in place - but handwritten notes, loose papers, and outside study guides are explicitly prohibited.
Because the reference rules are strict about what's disallowed, it's worth reviewing them closely well before test day rather than discovering a prohibited item at check-in. A quick one-page review of these mechanics, alongside other must-know exam facts, is available in our MD-ME Cheat Sheet.
If You Don't Pass on the First Try
Not everyone clears 70% on the first attempt, and Maryland's retest policy is straightforward: after a failed attempt, your first retest request requires a 30-day waiting period. If you fail again, subsequent retest requests require a 60-day wait. That means a second miss can cost you two full months before you're eligible to sit again - a strong incentive to treat your first attempt as the one that counts.
If you want to understand how your prep compares to what actually shows up on test day, our MD-ME Pass Rate article looks at what the available data suggests about first-attempt outcomes, without relying on invented numbers.
A Realistic Study Timeline
Generic study techniques only help if they're mapped to MD-ME's actual content weighting. Since Calculations is the largest domain and Electrical Theory carries double-point questions, your schedule should front-load those two areas rather than spreading time evenly across all eight domains.
Calculations and Electrical Theory
- Work load calculation problems daily using the 2020 NEC tables
- Drill Ohm's Law and power formulas until recall is automatic
Wiring, Protection, Methods, and Equipment
- Review grounding, bonding, and overcurrent protection rules
- Practice locating equipment requirements quickly in your tabbed code book
Special Occupancies, Equipment, and Communications
- Focus on occupancy types relevant to your typical job sites
- Review special equipment and low-voltage communications sections
Timed Practice and Code Book Navigation
- Run full-length timed practice exams under 4-hour conditions
- Refine your NEC tabbing based on where you lose time looking things up
You can run through timed, scenario-style practice questions modeled on the real exam format at our practice test platform, which is especially useful for building speed with your tabbed NEC before test day.
After You Pass: Licensing, Renewal, and Insurance
Passing the exam is only part of becoming a licensed master electrician in Maryland. The original master license carries a $25 fee, and the license itself is valid for two years before renewal is required. Renewal costs $31.50 and requires completion of 10 continuing-education hours.
Masters who are authorized to provide electrical services must also maintain insurance minimums: at least $300,000 in general-liability coverage and $100,000 in property-damage coverage. These aren't exam-day concerns, but they're part of the full picture of what holding the license actually requires - details worth understanding before you invest months of study, which our ROI analysis and salary guide both address from different angles.
If you're still mapping out when to actually schedule your test relative to your study timeline, the MD-ME Exam Dates guide covers testing windows and scheduling logistics through PSI.
Frequently Asked Questions
The exam has 90 questions worth 100 points total, and you're given a 4-hour time limit to complete it on a computer at a PSI testing center.
No. Only the 2020 NEC is permitted as a reference, and while permanent tabs, highlighting, and underlining are allowed in that code book, handwritten notes, loose papers, and outside study guides are prohibited.
You need to score 70% out of the 100 available points, which come from 90 questions - including ten Electrical Theory questions weighted at two points each.
Your first retest request requires a 30-day wait after a failed attempt. If you fail again, later retest requests require a 60-day wait before you can reschedule.
Maryland requires seven years of qualifying electrical-services experience under a master electrician or qualified government employee, though up to three years can be credited through approved formal study or training.
Passing the MD-ME on your first attempt comes down to matching your prep to the exam's actual structure - weighting Calculations and Electrical Theory appropriately, mastering fast NEC navigation, and treating the open-book format as a speed advantage rather than a safety net. Run through realistic, timed practice questions at MD-ME Exam Prep to see exactly where your code book navigation and calculation speed still need work before test day.