Conductor Insulation Types & Where to Use Them

Understand the different types of wire insulation, like THHN, THHW, and XHHW, and learn where to use them in various environments.

Last updated January 10, 2025
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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.

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