About the video
This lesson explains the differences between single and dual element water heaters, focusing on their operation and efficiency. Single element water heaters use one heating element to heat the entire tank, which can be slow for large tanks. Dual element water heaters have separate elements at the top and bottom, each controlled by a thermostat, allowing for more efficient heating by alternating which element is active. The video also covers simultaneous dual element water heaters, where both elements heat at the same time, often used in commercial settings for faster heating. Additionally, the lesson discusses the principles behind heating elements, including the use of different materials and configurations to achieve effective heating. By understanding these concepts, you can make informed decisions about water heater installations and upgrades. 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.”