About the video
This lesson covers NEC 240.4-240.24, detailing the requirements for overcurrent protection devices (OCPD). You’ll learn the importance of protecting conductors from excessive current to prevent insulation damage and electrical hazards. The lesson explains the correct sizing and installation of breakers and fuses, ensuring compliance with device ratings and conductor ampacities. It also addresses specific conditions where overcurrent protection is not required and highlights the importance of accessibility and protection from physical damage. 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.
Charges
Charges are rewards you earn for engaging in our learning system. You receive charges for completing both the video and the quiz in each lesson. The amount of charges available for each lesson is displayed in the “Lesson Features” box on the right. The charges you earn are based on the time it takes you to complete the lesson, which is also indicated in “Lesson Features.”