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About the video
This lesson emphasizes the crucial role of wire insulation in electrical systems. You’ll learn that while conductors are generally made of similar materials like copper or aluminum, it’s the insulation that determines their suitability for various environments. The video explains how different insulation types protect against heat, moisture, and other damaging factors. Examples like NM cable and UF cable highlight the importance of using the right insulation for specific applications. Understanding these differences helps prevent electrical hazards, ensuring safe and efficient installations in residential, commercial, and industrial settings. 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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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.”
Lesson Content
