About the video
This lesson explores the various knockout (KO) sets electricians use to cut into metal boxes for conduit attachments. You’ll learn about manual knockout sets, which require physical effort to punch holes, and hydraulic knockout sets that ease the process with hydraulic pressure. The video also introduces advanced battery-operated knockout tools, which offer precise and effortless cutting with features like extra grip and alignment lines. Each method is demonstrated, highlighting the pros and cons, safety considerations, and practical tips for achieving clean, accurate holes in metal boxes for conduit installation. 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.”