PrepPass also publishes a complete study guide for this exam as a downloadable book (58 pages, 55 practice questions inside, $14.99).
Exam inside two weeks?
A printable colour cheat sheet for the exam: the format, the content areas and the figures it turns on, each checked against a named source and dated.
Master Electrician cheat sheet PDF — $9.99 →
4 pages · US Letter · printable PDF · yours to keep
Test what you know · free, all of it
The same 300 questions, dealt five ways. Pick the one that fits the time you have.
Learn what the questions test
Practice finds the gaps. Reading closes them. The five chapters below are free to read online. The study guide book is a separate download, sold on its own page.
Before you sit
See the questions first
Real items, with the answer marked and the reason written out — the same format as all 300.
A dwelling has one 4-kW electric clothes dryer. What value must be used as the dryer demand load in the service calculation?
Why: The dryer load is the nameplate rating or 5,000 VA, whichever is larger. Since 4,000 VA is below 5,000 VA, 5,000 VA must be used.2023 NEC 220.54
What is the maximum number of service disconnecting means permitted for a single set of service-entrance conductors (each in a separate enclosure)?
Why: A service is limited to a maximum of six disconnecting means. In the 2023 NEC each of the up-to-six disconnects must be in a separate enclosure or be part of listed equipment.2023 NEC 230.71
Watch
The exam itself
| Questions | 150 |
|---|---|
| Time | 300 minutes |
| Sections | Calculations · Services & Distribution · Advanced Wiring · Theory & Design · Code Admin & Safety |
| Passing score | 75% |
| Our bank | 300 questions · updated August 2026Written from state electrical licensing board |
| Languages | English |
| Source | state electrical licensing board |
Helpful resources
Find your state's electrical board →
Recommended prep — books & tools
The code master-electrician exams test directly.
See it on Amazon →Pocket formulas and tables for fast exam calculations.
See it on Amazon →This section contains affiliate links. As an Amazon Associate, PrepPass earns from qualifying purchases. We may earn a commission if you buy through these links, at no extra cost to you.
Skilled Trade License Exams
Questions
All 300 questions, the timed mock and the report are free with no sign-up. A free account only adds saving your progress. The study guide book is sold separately, $14.99 one-time; nothing in the practice requires it.
No. Ours is 100 questions in 300 minutes; the real exam is 150 questions in 300 minutes. Use the mock for stamina and section timing, not as a score predictor.
75% — as published by state electrical licensing board. Confirm the current rule with them before your exam date.
Yes. PrepPass sells Master Electrician — Advanced NEC Study Guide (2026), a PDF + EPUB download, $14.99 one-time; the practice on this page stays free without it. See the study guide →
