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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.

Colorado reads the 2026 book

The Colorado examinations have been written on the 2026 National Electrical Code since 1 August 2026, and the state code went to the 2026 edition on 15 July 2026. This page holds no table values, and the sections it names are the 2026 numbers, which is the book PSI hands you in the room.

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 Colorado 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 notes still say 2023

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.

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 Colorado State Electrical Board, PSI, or any licensing authority, school or union.

The Colorado examinations are open book only in the sense that PSI puts a book on the desk. PSI provides the National Electrical Code and a formula page at the test center, bars writing, highlighting, underlining and indexing on them, and allows no other materials. The questions have followed the 2026 edition since 1 August 2026, and the 2023 book is provided on request until 1 November 2026.

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

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