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Episode 31 - Control Relays - HOW THEY WORK & WHAT THEY'RE FOR

A relay is a type of electromagnetic switch, similar to a contactor, that can be controlled remotely with electricity, rather than needing manual input as a standard switch would. 🤘⚡️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🎹🎧 SPONSOR ROGERS - https://www.rogersservices.com #electrician #electrical #electricity CONTROL RELAYS Relays can be used to control normal loads, as a contactor would, however, the benefit of a relay is they come with multiple normally-open (N.O.) and multiple normally-closed (N.C.) contacts - allowing you to use it to power some things on while removing power from others at the same time. The reason they are often called “control-relays” is that they’re typically used at lower voltages/lower amperages to control other devices such as contactors which are normally higher voltage and higher current. Many times you’ll find a control relay being controlled by smaller electronic circuits, events, or programs. When an electric signal is sent to engage the coil inside, it can send power to other devices which can turn them on or off - or both simultaneously. THE COIL On the inside of a relay you’ll find a coil of wire around two pieces of metal. When we send current through that coil of wire, the two pieces of metal suck together through electromagnetism. These pieces of metal that are opening or closing, are the “switch” for the relay to turn on and off. Coils come in many different voltage ratings. There are many types of coils out there that are controlled at 12-volts, 24, 120, even up to 240. However, the amount of current (amps) that the contacts can handle flowing through them is typically lower - around 5 to 10 amps. -- Subscribe - https://www.youtube.com/c/electrician... IF YOU ENJOY THESE VIDEOS PLEASE SUBSCRIBE AND "LIKE" THEM ABOVE. ALSO CHECK OUT THE ELECTRICIAN U PODCAST ON ITUNES AND SPOTIFY!!