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Practice exam

Timed on the published format, and it tells you where your time went. Original questions written for this site.

California reads the 2023 book

The California certification exam supplies a 2023 National Electrical Code inside the testing system, and the 2025 California Electrical Code is built on that same 2023 model code. This page holds no table values, but the sections it names are the 2026 numbers.

The article level moves are concentrated at the two ends of the book: Chapter 1 took in load calculations from Article 220 and energy management from Article 750, and the limited energy and communications material was rebuilt across the 720s. Ampacity, overcurrent, grounding, motors and boxes kept their articles, and Chapter 9 is still the tables.

Before you start

Have your code book open. Every question here is answerable with it, and working without it trains a skill you will not use in the exam room.

Questions supply any looked-up value as given data. What is being tested is the method, which is where the marks actually go.

Exam simulation uses this site's own mix, roughly seven knowledge questions to every three calculations, and clocks you at the pace the California paper sets. It withholds every answer until you submit, the way the real one does, and gives you a review screen first. Practice deliberately leans the other way, toward the calculation questions, because those are the slowest ones to work. It explains each question the moment you answer it.

If your book is the other edition

The 2023 to 2026 section crosswalk maps every section that moved, both directions, $29 once.

Built and maintained by Jeff Clerisier, Trojan Digital Marketing.

Every rule here is cited to the section it comes from, and corrections are logged in public with the date. This is study material rather than electrical advice, and it does not replace your own code book or your inspector.

California approves electrician trainee schools and continuing education providers. This site is neither, and nothing here counts toward the related and supplemental instruction a trainee has to be enrolled in.

NEC and National Electrical Code are registered trademarks of the National Fire Protection Association.

Trojan Digital Marketing is an independent company. We are not affiliated with, endorsed by, or sponsored by NFPA, the Division of Labor Standards Enforcement Electrician Certification Unit, CPS HR Consulting, delivering through Pearson VUE, or any licensing authority, school or union.

The certification exam is open book, but the books are supplied inside the testing system and you may not bring your own. The National Electrical Code supplied there is the 2023 edition. The contractor trade exam is closed book.

All practice questions are original. They are not actual exam questions.

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One original question in the California style, the arithmetic worked, the code section named, and a short note whenever a California licensing or code rule moves. Unsubscribe in one click.