What Changed in the 2024 Canadian Electrical Code — And What It Means for Alberta Apprentices

The 2024 edition of the Canadian Electrical Code, Part I (CSA C22.1-24) came into force in Alberta on April 1, 2025. If you're sitting a Period 1 through Period 4 AIT branch exam in the 2025–26 academic year or later, you are being tested on this edition. Studying from old practice questions or a pre-2024 code book is one of the fastest ways to pick up wrong answers on rules that no longer apply.

This article covers the key changes in the 2024 CEC that are most relevant to Alberta apprentices — what updated, which ILM modules were revised, and exactly what you need to do to make sure your study materials are current.

When Did the Update Happen — and Which Periods Does It Affect?

Alberta's apprenticeship curriculum rolls out on a phased schedule tied to academic years. Period 1 and Period 2 ILMs were updated in August 2024, meaning students entering those periods in the 2024–25 school year were the first to encounter the revised content. Period 3 and Period 4 ILMs were updated in August 2025, aligning the upper-period curriculum with the same 2024 CEC baseline.

This phased rollout creates a window where apprentices in different periods may be on different code editions depending on when they completed technical training. If you completed Period 3 technical training before August 2025, your ILMs may reference the 2018 CEC. Check the edition date printed inside the front cover of your ILM modules and confirm with your instructor or AIT exam counselling sheet if you're uncertain.

Key Changes in the 2024 CEC Relevant to Apprentices

Section 64 — Photovoltaic (Solar) Systems, Significantly Expanded

Section 64 of the CEC governs photovoltaic electrical generation systems. The 2024 edition significantly expanded this section to reflect how common rooftop and commercial solar installations have become in the Canadian market. New requirements cover DC disconnect placement, rapid shutdown requirements for roof-mounted arrays, inverter installation clearances, and storage battery integration rules.

For Alberta apprentices, this matters because PV content now appears in updated Period 1 ILMs as part of the foundational survey of electrical systems. Period 4 apprentices preparing for journeyperson exams will encounter more detailed Section 64 questions. If your study materials don't include solar-related content, they predate the 2024 update.

Section 86 — Electric Vehicle Charging Equipment

Section 86 is an entirely new section in the 2024 CEC dedicated to EV charging infrastructure. Prior to 2024, EV charging requirements were scattered across other sections. The 2024 edition consolidates them: branch circuit sizing for Level 2 chargers, load calculation requirements for multi-unit residential buildings with EV charging, GFCI protection requirements, and wiring methods for outdoor installations.

This is practically significant for apprentices because EV charging installations are now a routine part of residential and commercial electrical work in Alberta. Expect exam questions that require you to look up Section 86 requirements for ampacity, receptacle ratings, and placement rules.

Updated Grounding and Bonding Rules

Section 10 (grounding and bonding) received revisions in the 2024 edition, including updated requirements for grounding electrode conductors in certain installations and clarifications on bonding for metal water piping systems. The language around supplemental grounding electrodes was also revised. These changes are subtle but can generate wrong answers if you're navigating a 2018 code book to answer 2024 exam questions.

New and Revised Demand Factor Tables

Section 8 load calculations are one of the most heavily tested areas across all periods. The 2024 CEC revised several demand factor tables used for calculating service loads in residential, multi-unit, and commercial installations. The sequence of calculations and the applicable percentages for certain load types changed in some scenarios.

This is a high-risk area for apprentices using pre-2024 practice questions. If a practice question gives you a calculated service load that doesn't match what you get from the current tables, that's a sign the question was written against a previous edition.

What You Actually Need to Do

Get the 2024 CEC Edition

The 2024 CEC (CSA C22.1-24) is available from the CSA Group website and from provincial bookstores that stock technical codes. The AIT branch exam is open-book for the code — you bring your own copy. If you're writing an exam that covers the 2024 edition, you need the 2024 book in the exam room. An older edition will have different section content, different table values, and in some cases different section numbers.

Confirm Your ILMs Are Current

Check the edition or print date on the front matter of your Industry Learning Modules. If you purchased ILMs more than a couple of years ago, they may not reflect the 2024 CEC updates. Updated ILMs are available through NAIT, SAIT, Lethbridge College, or the AIT directly. Your instructor can confirm which ILM edition corresponds to the current exam.

Download the AIT Exam Counselling Sheet for Your Period

The exam counselling sheets tell you exactly which competency areas are tested and at what weighting. They also specify the reference materials — including the CEC edition — your exam uses. Treat this document as your primary study guide framework. Everything else (ILMs, practice questions, flashcards) should be aligned to what the counselling sheet says is being tested.

Flag Pre-2024 Practice Questions

If you're using practice questions from online forums, previous classmates' notes, or older prep resources, be aware that any question referencing Section 86 (EV charging) didn't exist before 2024 — and any question involving Section 64 in detail likely predates the expanded content. Questions that provide demand factor calculations should be checked against current Table 14 and Table 15 values. When in doubt, verify against the 2024 code book directly.

SparkStudy Is Already Updated for 2024 CEC Content

SparkStudy's question bank, flashcard content, and lesson explanations are built against the 2024 CEC. Every answer explanation that references a CEC section links to the correct 2024 section number and rule text. If a practice question on SparkStudy references Section 86 or the updated Section 64 PV content, the explanation will walk you through the 2024 CEC rule that applies.

The diagnostic assessment identifies which topic areas — including the updated sections — need the most attention based on your current performance. If you're weak on EV charging requirements or PV system rules, the spaced repetition system will weight those cards more heavily until your recall rate improves.

Staying current with code updates is part of what it means to be a safe, competent electrician in Alberta. The 2024 CEC isn't just an exam obstacle — it reflects how the industry has changed, and the rules it introduces are the ones you'll be working to in the field for the next several years.