- What Is IA-ME Certification?
- Who Administers the Exam
- Eligibility to Sit for the Exam
- Exam Format and Scoring
- The 8 Exam Domains
- Registration, Fees, and Scheduling
- Approved Materials and Testing Rules
- Retake Policy if You Don't Pass
- License Renewal and Continuing Education
- Who Needs This Credential
- Preparing Strategically by Domain
- Frequently Asked Questions
- IA-ME refers to the Iowa Class A Master Electrician License Exam, administered through PSI Services LLC.
- The exam has 110 total questions (100 scored) with a 270-minute total time limit and a 70% passing threshold.
- Wiring and Protection, Wiring Methods and Materials, and Equipment for General Use together make up 65% of scored content.
- The current exam fee is $87, and the full three-year Class A master license costs $375.
What Is IA-ME Certification?
IA-ME stands for the Iowa Master Electrician License Exam - specifically the Class A Master Electrician examination pathway overseen by the Iowa Electrical Examining Board. This is distinct from Iowa's separate Residential Master examination track, and it is the credential this site and its practice materials are built around. If you're asking what is IA-ME or trying to pin down the IA-ME meaning in the context of Iowa's electrical licensing system, this is the exam: a computer-based, open-book test that verifies a candidate's readiness to hold a Class A Master Electrician license in Iowa.
Passing this exam is not the finish line by itself - it's the gateway to applying for the actual Class A master license. Candidates who want the full picture of eligibility rules should also review IA-ME Requirements 2026 before committing time and money to the process.
Who Administers the Exam
Licensing authority rests with the Iowa Electrical Examining Board, operating under the Department of Inspections, Appeals, and Licensing (DIAL). DIAL sets eligibility rules, sponsors candidates for testing, and issues the license once the exam is passed and paperwork is filed. Actual exam delivery is handled by PSI Services LLC, which hosts the current exam bulletin and manages scheduling, testing centers, and score reporting.
This two-body structure matters practically: you don't just register with PSI whenever you feel ready. You first need Board sponsorship and authorization, and only then can you schedule a seat through PSI.
Eligibility to Sit for the Exam
Standard eligibility requires one year of Board-acceptable experience as a licensed Class A or Class B journeyman electrician in Iowa. There's also an upgrade route: an active Class B master electrician can use the examination-upgrade path to move to Class A status without restarting the journeyman clock.
One detail candidates frequently overlook: the approved master examination must have been passed within 24 months before the license application is submitted. Pass the exam too early relative to your application timeline, and you may need to retest. For a full breakdown of every prerequisite, see IA-ME Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
Confirm your journeyman experience qualifies as "Board-acceptable" before applying for sponsorship - this is verified before PSI authorization is granted, not after.
Exam Format and Scoring
The IA-ME Class A exam is a computer-based, multiple-choice, open-book test. It consists of:
- 100 scored questions plus 10 unscored questions, for 110 total items
- 240 minutes for the scored portion, plus 30 minutes allotted for unscored items - 270 minutes total testing time
- A passing score of 70% of the scored items
The unscored questions are mixed in with the scored ones and aren't identified during the test, so every question deserves full attention. If you're wondering exactly how the scoring threshold translates into how many questions you can afford to miss, the breakdown is covered in IA-ME Passing Score 2026: Exactly What You Need to Pass.
The exam is built entirely around the 2023 National Electrical Code (NEC), which DIAL confirms has been the reference standard for testing since January 1, 2024. If your background is on an older code cycle, budget real time to relearn article numbering and renumbered sections rather than assuming your prior code knowledge transfers directly.
The 8 Exam Domains
Iowa's Class A Master Electrician exam blueprint breaks scored content into eight domains. Understanding their relative weight is the single most useful thing you can do before building a study plan.
| Domain | Weight |
|---|---|
| Wiring and Protection | 25% |
| Wiring Methods and Materials | 20% |
| Equipment for General Use | 20% |
| General Electrical Knowledge | 10% |
| Special Occupancies | 10% |
| Special Equipment | 5% |
| Special Conditions | 5% |
| Communication Systems | 5% |
Notice that Wiring and Protection, Wiring Methods and Materials, and Equipment for General Use together make up 65% of the entire scored exam. That's nearly two-thirds of your score riding on three domains. Any study plan that spreads time evenly across all eight domains is misallocating effort.
Wiring and Protection (25%)
The single largest domain. Covers overcurrent protection, grounding and bonding, branch circuits, feeders, and services - the backbone of NEC compliance.
- Grounding electrode systems and bonding requirements
- Overcurrent device sizing and coordination
- Branch circuit and feeder calculations
Wiring Methods and Materials (20%)
Focuses on conductor types, raceway systems, box and enclosure sizing, and installation methods across different environments.
- Conduit fill and box sizing calculations
- Cable and raceway selection by application
Equipment for General Use (20%)
Covers switches, receptacles, motors, transformers, and general-use equipment installation and protection requirements.
- Motor circuit protection and disconnect sizing
- Transformer overcurrent protection rules
The remaining five domains are lower-weighted individually but still appear across roughly a third of scored questions combined. For an item-by-item breakdown of subtopics inside each domain, review IA-ME Exam Domains 2026: Complete Guide to All 8 Content Areas.
Registration, Fees, and Scheduling
Getting to test day involves a specific sequence, and skipping a step can cost you time:
- Obtain Board sponsorship and authorization from the Iowa Electrical Examining Board.
- Once authorized, schedule your exam through PSI Services LLC.
- Authorization is valid for two attempts or six months, whichever comes first.
According to the PSI-hosted bulletin updated September 19, 2025, the current exam fee is $87. That's the fee for sitting the exam itself - it's separate from the license fee. The full three-year Class A master license costs $375, with initial fees prorated depending on the month the license is issued. The current licensing cycle runs 2026-2028. For a complete cost breakdown covering both exam and licensing fees, see IA-ME Certification Cost 2026: Complete Pricing Breakdown.
If your plans change, you must cancel or reschedule at least two days before your testing appointment - missing that window typically forfeits your scheduled slot. For current testing windows and deadlines, check IA-ME Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Approved Materials and Testing Rules
Because this is an open-book exam, what you're allowed to bring matters as much as what you study. Approved reference material is limited to the 2023 NEC or the 2023 NEC Handbook - no other edition, and no substitutes.
- Allowed: advance highlighting, underlining, and permanent indexing (tabs affixed before test day)
- Prohibited: handwritten notes, removable tabs, extra loose papers, and Ugly's Electrical References
- Calculators: the on-screen calculator provided by PSI, or your own approved nonprogrammable, nonprinting calculator
This is a common tripping point for first-time candidates who assume any tabbed code book is fine - removable sticky tabs are explicitly disallowed, while permanent indexing done in advance is not. Get your code book prepared well before test day rather than scrambling the night before.
Key Takeaway
Prepare your NEC book's index and highlighting weeks in advance - permanent tabbing takes time to do properly, and it directly affects how fast you can locate code sections during the 240-minute scored window.
Retake Policy if You Don't Pass
Iowa's retake structure escalates with repeated failures:
- After two failures, candidates must wait six months and complete 12 approved continuing-education hours before testing again.
- After four failures, the same six-month wait and 12-hour education requirement apply again.
- After six failures, further attempts require Board approval following a formal petition and an additional six-month wait.
This makes first-attempt preparation genuinely valuable - not just for saving the $87 exam fee each time, but for avoiding mandatory education delays that can push your licensing timeline back by months. For data-informed context on how candidates typically perform, see IA-ME Pass Rate 2026: What the Data Shows.
License Renewal and Continuing Education
Once licensed, maintaining Class A Master Electrician status requires ongoing education. A full three-year renewal term requires 18 approved continuing-education hours, including at least six hours specifically on the NEC under the Board's continuing-education guidance. If your initial license term is shorter than three years (due to proration), the requirement scales down to six hours for each year or partial year licensed.
This renewal structure is worth planning for even before you sit the exam, since continuing education becomes a recurring part of holding the license long-term.
Who Needs This Credential
The Class A Master Electrician license is generally pursued by journeyman electricians ready to take on supervisory responsibility, pull permits independently, or run their own electrical contracting operations in Iowa. It's a meaningful career step up from journeyman-level work, since master status typically opens doors to project oversight, business ownership, and higher-responsibility roles on commercial and industrial jobs. If you're evaluating whether the investment in time, fees, and study makes sense for your situation, Is the IA-ME Certification Worth It? Complete ROI Analysis 2026 and IA-ME Salary Guide 2026: Complete Earnings Analysis dig into that question further. Candidates researching where the license can lead can also browse IA-ME Jobs.
Preparing Strategically by Domain
Given that Wiring and Protection, Wiring Methods and Materials, and Equipment for General Use account for 65% of scored content, a sensible study sequence front-loads those three domains before moving to the lower-weighted ones.
Wiring and Protection (25%)
- Master grounding/bonding rules and overcurrent protection sizing
- Practice branch circuit and feeder load calculations from the 2023 NEC
Wiring Methods and Materials + Equipment for General Use (40% combined)
- Drill conduit fill and box-sizing problems repeatedly
- Review motor and transformer protection requirements
General Electrical Knowledge, Special Occupancies
- Cover fundamentals and occupancy-specific code sections
- Practice navigating the NEC index under time pressure
Special Equipment, Special Conditions, Communication Systems
- Finish remaining lower-weighted domains
- Take full-length timed practice exams simulating the 270-minute format
Spaced repetition on calculation-heavy topics (load calcs, conduit fill) tends to pay off more than passive re-reading, precisely because those question types recur heavily across the three highest-weighted domains. For a structured week-by-week plan with more detail, see IA-ME Study Guide 2026: How to Pass on Your First Attempt, and for a condensed reference of must-know facts right before test day, check the IA-ME Cheat Sheet 2026: One-Page Review of Must-Know Facts.
Practicing under realistic conditions matters as much as content review. Working through timed, domain-weighted practice questions on our practice test platform helps you build the code-navigation speed the open-book format demands, and repeated runs through full-length simulated exams reveal which of the three heavyweight domains still need work before you commit to a testing date.
Frequently Asked Questions
On this site, IA-ME refers specifically to the Iowa Master Electrician License Exam for the Class A pathway, administered under the Iowa Electrical Examining Board and delivered by PSI Services LLC. See What Does IA-ME Stand For? for more detail.
The exam has 110 total questions - 100 scored and 10 unscored - with 240 minutes for the scored portion and an additional 30 minutes for unscored items, for 270 minutes total.
You need to answer 70% of the 100 scored questions correctly. Unscored questions don't count toward your result.
No. Only the 2023 NEC or 2023 NEC Handbook with advance highlighting, underlining, and permanent indexing is allowed. Handwritten notes, removable tabs, extra papers, and Ugly's Electrical References are prohibited.
After two failures, you must wait six months and complete 12 approved continuing-education hours before retesting. The same requirement applies again after four failures. After six failures, you need Board approval via a petition plus another six-month wait.
No. This article and site focus on the Class A Master Electrician examination pathway, which is separate from Iowa's Residential Master examination track.