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» Wiring Electrical Control Relays
» Residential Electrical Wiring: Guide to Home Wiring
» Need Electrical Help? Get a Quick Reply! Ask the Electrician
Wiring Electrical Control Relays
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By Dave Rongey
Summary: Wiring Electric Relays to Control HVAC Heating and Air Conditioning Equipment. How to wire control relays for equipment such as Generators, Air Conditioners, Heating Furnace, and other high demand equipment. Full explanation describing the principles which are easily adapted to residential wiring applications. |
Introduction to the Basics of Electrical Relays
A relay contactor is a large relay, usually used to switch current to an electric motor or other high-power load.
Large electric motors can be protected from overcurrent damage through the use of overload heaters and overload contacts.
If the series-connected heaters get too hot from excessive current, the normally-closed overload contact will open, de-energizing the contactor sending power to the motor.
More aboutControl Relays and Contactors | |
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How Electrical On-Delay Staging Relays WorkThis section will cover the use of relays that are sometimes needed to control special device loads such as Air Conditioners and other high demand equipment from starting at the same time.Electrical Relay Construction and Purpose - Part 1This section will cover how relays are constructed and operate due to the current flowing through the control coil and the mechanical reaction that takes place.Electrical Relay Construction and Purpose - Part 2This section will cover the use of electrical relays contactors and how they are wired and function in a motor control application.Electrical Relay Construction and Purpose - Part 3This section covers time-delay relays and how they can be constructed to delay armature motion on coil energization, de-energization, or both.Electrical Relay Construction and Purpose - Part 4This section explains how protective relays are used to monitor the current, voltage, frequency and more in the electrical power industry.Electrical Relay Construction and Purpose - Part 5This section will discusses the limitations of solid state relays due to contacts, size and operation speed. |
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The Safest Way to Test Electrical Devices and Identify Electric Wires!The Non-Contact Electrical TesterThis is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.
The Quickest Way to Check for Faulty Electrical Wiring!The Plug-In Outlet TesterThis is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring. It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect Very handy and easy to use.
Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!The Wire Stripper and Wire CutterMy absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires. This handy tool has multiple uses: The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation. The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets.. The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use. |
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