About the video
This lesson explains the various types of wire insulation, such as THHN, THHW, and XHHW, and their appropriate applications. You’ll learn about the significance of different insulation materials, like thermoplastic and thermoset, and how they determine a conductor’s suitability for dry, damp, or wet environments. The video covers the temperature ratings and environmental resistances of each insulation type, helping you choose the right wire for specific conditions. By understanding these distinctions, you can ensure safe and effective electrical installations, tailored to the demands of different 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.
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.”