About the video
This lesson provides an in-depth look at NM (Romex) and NMC cables, detailing their permitted uses in various residential and commercial environments per NEC Article 334. It covers installation requirements, including the need for protection from physical damage and specific scenarios where these cables can or cannot be used. You’ll learn about the importance of using proper grommets and bushings to prevent damage, as well as the ampacity ratings and how to ensure safe and compliant electrical installations in dry, wet, and corrosive environments. 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.”