Ever wondered how relays work and what they're used for? I answer this in a 3 minute short version of a video I did on this topic long ago. For the full version of this video click here: • Episode 31 - Control Relays - HOW THEY WOR... 🤘⚡️EU Learning System⚡️🤘 For Individuals --- https://electricianu.com/learning-sys... For Businesses --- https://electricianu.com/learning-sys... -Video courses on every side of the electrical trade (theory, code, safety, wiring, install, troubleshooting, leadership, and more) -Practice exams for 2017, 2020, 2023 code -YouTube videos categorized and searchable -Audio lessons -Forum -Business version has admin portal and ability to assign learning to technicians and monitor progress -Any business size from 2 techs to 2,000! 🎓💡CONTINUING EDUCATION💡🎓 Sign up here --- https://electricianu.com/continuing-e... -State Approved -Video Based ✍📝PRACTICE EXAMS📝✍ Get them here --- https://www.electricianu.com/electric... -2017, 2020, and 2023 NEC versions -Online Residential Wireman Exam -Online Journeyman Exam -Online Master Exam -300 Question Online Code Cannon (not license specific, all code) -Take as many times as you want -All of the above come with printable PDFs 🎤🎧PODCAST🎧🎤 Spotify: https://open.spotify.com/show/7ldCwdx... Apple Podcast: https://podcasts.apple.com/us/podcast... 📱👍SOCIALS👍📱 TikTok - / electricianu Instagram - / electrician_u Facebook - / theelectricianu Reddit - / electricianu Rumble - https://rumble.com/c/ElectricianU Discord - / discord 🎧🎹Music, Editing, and Videography by Drake Descant and Rob LeBlanc🎹🎧 #electrician #electrical #electricity A control relay, cube relay, ice-cube relay, or relay as they're commonly called, is an electromagnetic switch. What this means is that it's a switch that you can use electricity to turn off, or on, or both off and on at the same time. Some loads need to be automated, rather than having a person have to walk up and turn a switch on - so they need to be able to allow for external control devices such as timeclocks, photocells, or remote monitoring systems to control. Control relays also allow for multiple different circuits/loads to be controlled with a single action. Meaning ONE signal/event can trigger multiple different loads/circuits to turn off, or on, or a combination of some on, and some off - at the same time.