Practice exam review and test-day strategy

Ten days before her exam, Nadia sat in Crow River's conference room with an untabbed soft-cover 2026 NEC, a printed copy of the electrical laws and rules, a plain desk calculator, a kitchen timer and a practice set of 80 questions. Her phone was in the truck. Lars had insisted on one full session under conditions as close to the real ones as she could make them. "Five and a half hours with a clean book is a different job from an hour after supper," he said. When the timer went off, she had answered every question, but she had rushed the last fifteen and scored 53 out of 80. That result shaped her final week more than anything else in her preparation.

This lesson pulls the course together: a study plan built for an exam with provided references, the calculations and Minnesota topics most worth reviewing, worked practice questions, how to review a practice session, and a plan for exam day. The figures for the exam format are the journeyworker figures that exam preparation providers describe, used as a guide, because the department does not publish a master question count or pass mark on its main pages.

A ten-week plan

Most candidates who pass on the first attempt follow some version of the same plan. They spend the first weeks learning the layout of the current NEC, the middle weeks on the technical content and calculations, a block on the Minnesota laws and rules and the business topics in this course, and the last weeks on timed practice and weak areas. In Minnesota the plan has one special feature: because the department provides a clean, untabbed book, the candidate cannot rely on tabs and must practice finding things in a book with no aids at all.

Learning a book without tabs

Candidates who learned on a tabbed book often find the clean book slower at first. The fix is to learn the book's structure well enough to open it near the right page. Chapters 1 through 4 apply generally; chapters 5 through 7 cover specific occupancies, equipment and conditions; chapter 9 holds the tables. Within chapters, article numbers rise steadily, so a candidate who knows that load calculations now sit in Article 120 and grounding in Article 250 can open the book close to the right spot and adjust in a few page turns. The index is the other route: a key word, then the article and section.

Nadia practiced a simple drill every night for two weeks. Becky read out a topic, such as a motor branch circuit, an EV charger feeder or a grain dryer in a wet location, and Nadia found the governing article in the clean book against a 60-second timer. At first she missed half. By the end she found nine out of ten, and she knew which topics sent her to the index rather than straight to an article.

Technical review: the calculations that keep coming back

The same calculations appear again and again on electrical exams: Ohm's law and power, single-phase and three-phase current, voltage drop, conductor sizing with temperature correction and adjustment, motor branch circuits, transformer current and protection, box and conduit fill, and dwelling and commercial load calculations. The master core courses covered each one. In the last weeks the goal is speed and accuracy: knowing which formula applies, which article or table to open, and how to check an answer for reasonableness before moving on.

# Quick practice: transformer and three-phase current (illustrative values)
import math
kva = 75
for volts in (208, 480):
    amps = kva * 1000 / (math.sqrt(3) * volts)
    print(f"{kva} kVA at {volts} V three-phase: {amps:.1f} A")

# Single-phase voltage drop (illustrative: 2-wire, K = 12.9 for copper)
load_amps, length_ft, cmil, volts = 40, 150, 16510, 240
vd = 2 * 12.9 * load_amps * length_ft / cmil
print(f"Voltage drop: {vd:.2f} V, or {vd / volts * 100:.1f} in every 100 volts")

75 kVA at 208 V three-phase: 208.2 A
75 kVA at 480 V three-phase: 90.2 A
Voltage drop: 9.38 V, or 3.9 in every 100 volts

The first result, about 208 amperes on the 208-volt side of a 75 kVA transformer and about 90 amperes on the 480-volt side, is worth remembering because it lets you check transformer questions quickly. The voltage drop example uses the common approximate formula with a constant for copper and an illustrative conductor area; on the exam, take conductor properties from the tables in chapter 9 and use the method the question asks for. A result of about 9.4 volts on a 240-volt circuit is close to four volts in every hundred, which should prompt a check of whether the question wants a larger conductor.

Minnesota review

The Minnesota questions draw on the Act and the rules in the laws and rules booklet. The topics most worth a final review are the license classes and experience routes, the exam and application process, the responsible licensed master rules, supervision of registered unlicensed electricians, the contractor license requirements, permits and inspection, the NEC adoption and transition dates, and renewal. The business topics, including liens and workers' compensation, are useful in practice and may appear on the exam in general form.

# Quick practice with the Minnesota numbers from this course (2026 sources)
questions, minutes, to_pass = 80, 330, 56   # journeyworker figures from providers, used as a guide
print("Minutes per question:", round(minutes / questions, 1))
print("Correct answers needed, in every 100:", round(to_pass / questions * 100))

ce_total, ce_code = 16, 12
print("Non-code hours allowed at most:", ce_total - ce_code)

bond, per_occurrence, aggregate, property_damage = 25_000, 100_000, 300_000, 50_000
print("Liability aggregate is", aggregate // per_occurrence, "times the per-occurrence minimum")

Minutes per question: 4.1
Correct answers needed, in every 100: 70
Non-code hours allowed at most: 4
Liability aggregate is 3 times the per-occurrence minimum

Worked practice questions

Reviewing a practice session

A practice session is only as useful as the review that follows it. Nadia's first full session came in at 53 out of 80, three short of the journeyworker passing figure, and her first reaction was to study everything again. Lars asked her to sort the misses instead. She had lost six on grounding and bonding, four on load calculations, three on motors, three on the laws and rules and the rest scattered. Only eight of her misses came from not knowing the material. The rest came from slow lookups in the clean book, misread questions, arithmetic slips and the rushed final fifteen.

Keep a running log of every miss with its cause, the article or rule where the answer lives and the time it took. Over several sessions the log shows patterns: an article that always takes too long, a kind of question you misread, a formula you keep inverting. Nadia's second full session, five days later, came in at 61 out of 80, and almost all of the gain came from faster lookups and a steadier pace at the end rather than from new knowledge.

# Practice session tracker (illustrative scores)
sessions = [("Session 1", 53), ("Session 2", 61), ("Session 3", 64)]
guide_pass = 56
for name, correct in sessions:
    status = "above" if correct >= guide_pass else "below"
    print(f"{name}: {correct}/80, {status} the guide mark by {abs(correct - guide_pass)}")

Session 1: 53/80, below the guide mark by 3
Session 2: 61/80, above the guide mark by 5
Session 3: 64/80, above the guide mark by 8

Exam day

Prepare the night before: identification that matches the name on the application exactly, the approval message with the site address, directions and a plan for weather, water and a snack if allowed, and an early alarm. Leave the phone and any electronics in the vehicle, because they are not allowed in the building. Sleep matters more than a last evening of cramming. Arrive early and check in calmly. Open the provided code book and spend the first minute confirming it is the edition you studied and noting where chapter 9 begins. Then write your checkpoints on the scratch paper, such as 40 questions by the 150-minute mark, work steadily, flag slow questions and keep the last 20 minutes for the flagged ones. Answer every question.

Fatigue is the enemy late in a five-and-a-half-hour exam. Nadia's practice sessions taught her that her accuracy dropped in the last hour, so she planned a short pause every hour to stretch her hands and look away from the page. She also carried a rule from her miss log: change an answer only when the book gives a specific reason, never on a feeling.

After the exam

Nadia drove back to St. Cloud from the testing site with a passing result. Becky started the paperwork the next morning: the license fee in iMS, then the change to Crow River's contractor record designating Nadia as the responsible licensed master, with the verified statement. Lars made the change official at the Monday crew meeting, and Tyler Vang asked Nadia whether she would sign his experience form when the time came. She said yes, and that the months would be exactly right.

If you do not pass on the first try, write down the topics that felt slow while the memory is fresh, reapply after the waiting period and use the time for the drills that fix those topics. Many good masters passed on their second attempt. What matters is the plan you follow afterward and the honesty of your review.