Products
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Electricity: Relays, Contactors and Starters (Module 7)
CourseA relay is an electrical switch. It opens and closes under the control of a separate electrical circuit. This topic will explain the workings of a relay.
$55
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Electricity: Fundamentals of Alternating Current (Module 8)
CourseIn this lesson we will study the nature and composition of alternating current. You will be able to explain alternating current and explain sine waves.
$55
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Electricity Alternating Current: Reactance, Impedance, & Power Factor (Module 9)
CourseDifferent components of a circuit create opposition to alternating current in different ways. In this topic, you will learn to calculate the resistance offered by capacitors and inductors.
$55
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Electricity: Circuit Protection Devices: Fuses (Module 10)
CourseWhen you have completed this lesson you will be able to discuss the conditions under which protection is needed, and describe the different types of fuses.
$55
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Electricity: Circuit Breakers & Overload Protection (Module 11)
CourseOn completing this lesson, you will be able to list the main components of a circuit breaker, and explain the basic function of a circuit breaker.
$55
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Electricity: Understanding Electrical Schematics (Module 12)
CourseWhen you've completed this lesson you will be able to describe how wiring diagrams can be read, identify different types of wiring diagrams used in HVACR industry, and name the five basic components to any schematic.
$55
