Motor Conductor Sizing | Red Seal Exam Prep (2024 CEC)

Motor conductor sizing is one of the trickiest topics on the Red Seal exam. In this video, we’ll show you exactly how to size motor conductors using the Canadian Electrical Code (2024 CEC). We’ll break down the rules, walk through examples, and explain the calculations step by step so you’re ready for both the exam and real-world applications.

What you’ll learn in this video:
CEC Section 28 requirements for motor conductors
How to use Table 44 to find motor full-load current (FLC)
Applying the 125% factor to determine minimum conductor ampacity
Selecting the correct conductor size from Tables 1–4
Worked calculation examples to match Red Seal exam questions

This guide is designed for apprentices preparing for the Red Seal Electrical Exam and electricians looking to refresh their knowledge. By the end, you’ll know exactly how to approach any motor conductor sizing question with confidence.

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