About the video
This lesson provides an overview of NEC Article 250, focusing on general grounding and bonding requirements. You’ll learn the importance of grounding systems to stabilize voltage, prevent objectionable currents, and ensure safety. The lesson breaks down the various parts of Article 250, including system grounding, grounding electrode systems, bonding, and methods of grounding conductors. Emphasis is placed on the correct interpretation and application of these requirements to maintain safe and effective electrical installations. 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.”