- What IA-ME Actually Means
- Who Administers the Iowa Master Electrician Exam
- Exam Format: What "IA-ME" Looks Like on Test Day
- The 8 Content Domains Behind the Name
- Eligibility and the Path to Sitting for IA-ME
- Fees, Licensing Costs, and the 2026-2028 Cycle
- Approved References and Calculator Rules
- Retake Rules if You Don't Pass
- Why the Meaning Matters for Your Career
- Frequently Asked Questions
- IA-ME on this site means the Iowa Master Electrician License Exam, Class A pathway, not the Residential Master track.
- The Iowa Electrical Examining Board (within DIAL) authorizes candidates; PSI Services LLC delivers the actual test.
- The exam is 110 total questions (100 scored, 10 unscored) across 270 minutes, and you need 70% of scored items to pass.
- Wiring and Protection, Wiring Methods and Materials, and Equipment for General Use combine for 65% of scored content.
What IA-ME Actually Means
On this site, IA-ME stands for the Iowa Master Electrician License Exam - specifically the Class A Master Electrician examination pathway regulated by the state of Iowa. It is not a national certification, a software credential, or any other acronym that happens to share the same letters. Every fact, number, and rule referenced across this site's content, including this article, applies exclusively to the Iowa Class A Master Electrician exam.
This distinction matters because "master electrician license exams" exist in nearly every state, and generic acronyms get reused across completely different industries. If you searched broadly for "IA-ME" and landed here, you should know you're reading about the Iowa-specific licensing exam that leads to a Class A Master Electrician license, issued by a state agency and delivered through a third-party testing vendor - not a private industry certification with its own separate governing body.
Who Administers the Iowa Master Electrician Exam
The Iowa Electrical Examining Board, housed within the Department of Inspections, Appeals, and Licensing (DIAL), sets the rules, eligibility standards, and licensing requirements for the Class A Master Electrician credential. The Board does not proctor the exam itself. Instead, PSI Services LLC is the testing vendor that hosts the exam bulletin, schedules test sessions, and delivers the computer-based test.
This two-party structure means candidates interact with two different organizations during the licensing process: the Board for sponsorship, authorization, and the actual license, and PSI for scheduling and sitting the exam. Understanding this split early prevents confusion later - for example, if your authorization lapses or you need to reschedule, you're dealing with PSI's scheduling system, but if you have a question about eligibility documentation, that's a Board matter through DIAL.
If you want a broader orientation to what the credential covers and who it's for before diving into logistics, the companion piece What Is IA-ME? walks through the bigger picture, and IA-ME Certification covers what the license itself represents once you've passed.
Exam Format: What "IA-ME" Looks Like on Test Day
The IA-ME exam is a computer-based, multiple-choice, open-book examination administered at a PSI test center. The structure is fixed and worth memorizing before you ever schedule a session:
- 110 total questions - 100 scored items plus 10 unscored (pretest) items that look identical to scored questions but don't count toward your result.
- 270 total minutes - 240 minutes allotted for the scored portion and an additional 30 minutes for the unscored items.
- 70% passing threshold - you need to answer 70% of the 100 scored questions correctly; the unscored items have no bearing on pass/fail.
- Open-book format - you're permitted to bring an approved code reference, which changes how you should prepare compared to a closed-book exam (more on this in the materials section below).
Because you won't know which questions are scored and which are the 10 unscored items, the practical strategy is to treat every question with equal seriousness and pace yourself against the full 240-minute scored window rather than trying to guess which items don't count.
Key Takeaway
Budget your 240 scored minutes across 100 questions - that's roughly 2.4 minutes per question on average, though code-lookup questions will eat more time than straightforward knowledge questions.
For a deeper breakdown of exactly how the passing calculation works and what score you need to hit, see IA-ME Passing Score 2026: Exactly What You Need to Pass.
The 8 Content Domains Behind the Name
The IA-ME exam blueprint is organized into eight content domains, and understanding their relative weight is arguably the single most useful piece of information for planning your study time.
Domain 2: Wiring and Protection - 25%
The single heaviest domain on the exam. Covers overcurrent protection, grounding and bonding, branch circuits, feeders, and services.
- Highest point value of any domain - prioritize accordingly
Domain 3: Wiring Methods and Materials - 20%
Covers conductor types, raceways, boxes, and installation methods drawn from the NEC 2023.
- Heavy on code-lookup style questions
Domain 4: Equipment for General Use - 20%
Covers switches, receptacles, motors, appliances, and general-use equipment installation rules.
- Combined with Domains 2 and 3, this accounts for 65% of the entire scored exam
The remaining domains carry smaller but still meaningful weight: General Electrical Knowledge (10%), Special Occupancies (10%), Special Equipment (5%), Special Conditions (5%), and Communication Systems (5%). None of these should be skipped, but they simply don't carry the same point density as the top three.
| 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% |
For a full walk-through of every domain with topic-level detail, see IA-ME Exam Domains 2026: Complete Guide to All 8 Content Areas. If you're trying to gauge how tough the overall exam feels once you factor in the 240-minute time limit and open-book code lookups, How Hard Is the IA-ME Exam? Complete Difficulty Guide 2026 goes into that specifically.
A Note on the Code Edition
All questions reference the 2023 NEC. DIAL confirms this edition has been used for testing since January 1, 2024, so any study materials or practice questions built around older code editions (2020, 2017, etc.) will actively mislead you on article numbers and requirements that shifted between editions.
Eligibility and the Path to Sitting for IA-ME
Standard eligibility for the Class A Master exam requires one year of Board-acceptable experience as a licensed Class A or Class B journeyman electrician. There's also an alternate route: an active Class B master electrician can use an examination-upgrade path to move into the Class A credential.
Before you can schedule anything with PSI, you need Board sponsorship and authorization. This is a distinct step from registering for the test itself - DIAL has to approve your eligibility first, and that authorization then covers two attempts or six months, whichever comes first. If you don't test within that window, you'll need to go back through the Board for renewed authorization.
One more timing detail worth flagging: the approved master exam must have been passed within 24 months before you submit your license application. Passing the exam and then sitting on the result for years isn't an option - there's a clock running from the moment you pass to the moment you apply for the actual license.
For the complete rundown of experience hours, documentation, and how the Class B upgrade route works in detail, see IA-ME Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Fees, Licensing Costs, and the 2026-2028 Cycle
Two separate costs come into play, and conflating them is a common mistake:
- Exam fee: The PSI-hosted bulletin, updated September 19, 2025, lists an $87 fee to sit for the exam.
- License fee: The full three-year Class A master license costs $375. Initial fees are prorated based on the month your license is issued, so a license issued mid-cycle costs less than one issued at the very start.
The current licensing cycle runs 2026-2028, which matters for renewal planning as much as for initial application timing. Renewal itself requires 18 approved continuing-education hours for a full three-year term, with at least six of those hours specifically in NEC content per the Board's continuing-education guidance. If your initial license term is shorter than three years because of when it was issued, the requirement scales down to six hours for each year or portion of a year licensed.
For a complete cost breakdown including how proration works across different issuance months, see IA-ME Certification Cost 2026: Complete Pricing Breakdown.
Approved References and Calculator Rules
Because IA-ME is open-book, what you're allowed to bring into the test center is just as important as what you study beforehand. The approved references are the 2023 NEC or the 2023 NEC Handbook - nothing else qualifies.
PSI permits advance highlighting, underlining, and permanent indexing in your code book. What's explicitly prohibited: handwritten notes, removable tabs, extra loose papers, and Ugly's Electrical References. If you show up with sticky tabs or a copy of Ugly's, expect it to be confiscated or refused at check-in.
For calculations, you can use the on-screen calculator provided in the testing software or bring your own approved nonprogrammable, nonprinting calculator. Anything with programmable memory or printing capability is off the table.
Key Takeaway
Do your indexing and highlighting well before test day - permanent index tabs are allowed, but you can't add sticky notes or loose paper once you're in the exam room.
Retake Rules if You Don't Pass
Iowa's retake structure has escalating requirements built in, so it pays to prepare thoroughly rather than treat a first attempt as a "practice run."
- After two failures: wait six months and complete 12 approved continuing-education hours before testing again.
- After four failures: the same six-month wait and continuing-education requirement applies again.
- After six failures: further attempts require Board approval following a petition, plus an additional six-month wait.
Remember also that authorization from the Board only covers two attempts or six months. If you fail twice within that window, you'll be dealing with both the CE requirement and the need for fresh authorization before you can schedule with PSI again.
To understand roughly how demanding the exam tends to be for candidates going in, and where most people report struggling, see How Hard Is the IA-ME Exam? Complete Difficulty Guide 2026 and the data-focused IA-ME Pass Rate 2026: What the Data Shows.
Wiring and Protection + Wiring Methods and Materials
- These two domains alone represent 45% of scored content - start here
- Work through overcurrent protection, grounding/bonding, and raceway rules from the 2023 NEC
Equipment for General Use + Remaining Domains
- Finish the "big three" domains (65% combined) before moving to smaller-weight topics
- Layer in General Electrical Knowledge and Special Occupancies
- Practice open-book timing so code lookups don't eat your 240 minutes
For a fuller week-by-week plan tied to each domain's exact weight, see IA-ME Study Guide 2026: How to Pass on Your First Attempt. You can also build timed, open-book practice sessions using the exam simulator on the main practice test site to get a feel for the 270-minute pacing before test day.
Why the Meaning Matters for Your Career
Knowing exactly what IA-ME refers to - a state-issued Class A Master Electrician license, not a generic industry badge - changes how you should evaluate its value. Because the credential is tied to a specific state licensing board and a specific code edition, it signals to employers that you're qualified to take on master-level responsibility on electrical projects governed by Iowa's adopted 2023 NEC.
If you're weighing whether the time, the $87 exam fee, and the $375 license fee are worth it relative to your career goals, Is the IA-ME Certification Worth It? Complete ROI Analysis 2026 and IA-ME Salary Guide 2026: Complete Earnings Analysis dig into that question directly. And once licensed, IA-ME Jobs covers where Class A Master Electricians tend to find work across Iowa.
You can also browse related terminology explainers on this site - What Does IA-ME Stand For?, What Does IA-ME Mean?, and What Is A IA-ME? - if you landed here still sorting out the basics before committing to the exam pathway.
Frequently Asked Questions
No. This site's content targets the Class A Master Electrician examination pathway specifically, which is distinct from Iowa's separate Residential Master examination.
PSI Services LLC handles exam scheduling and delivery. The Iowa Electrical Examining Board within DIAL handles sponsorship, authorization, eligibility, and the actual license.
There are 110 total questions - 100 scored and 10 unscored - with 240 minutes for the scored portion plus an extra 30 minutes for the unscored items, for 270 minutes total.
You can bring the 2023 NEC or 2023 NEC Handbook with advance highlighting, underlining, and permanent indexing. Handwritten notes, removable tabs, and loose extra papers are prohibited.
After two failures you must wait six months and complete 12 approved continuing-education hours; the same requirement applies again after four failures. After six failures, you need Board approval via petition plus another six-month wait.