Motor OCPD Sizing Examples

Learn practical examples of motor overcurrent protection device (OCPD) sizing, including calculations for short circuit, ground fault, and overload protection using NEC guidelines.

Last updated December 16, 2024
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About the video

This lesson provides practical examples of sizing overcurrent protection devices (OCPD) for motors, focusing on short circuit, ground fault, and overload protection. Using NEC guidelines, you’ll see step-by-step calculations for different motor types and scenarios. The lesson explains the application of tables and code sections to determine correct breaker and fuse sizes, ensuring safe and compliant motor installations. Real-world examples help illustrate how to protect motors from various electrical faults, emphasizing the importance of accurate OCPD sizing. To get started, go to the Lesson Content tab and click on the video.

About the quiz

Each lesson contains a video, and is followed up with a simple quiz. Quizzes review information discussed within the video, with each question providing an answer justification. Helping to reinforce correct answers and helps clarify any mistakes through code citations, excerpts, and explanations, so you can better understand the material.

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