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Interplay Learning - AC Motor Lab

Learn how magnetism, current, and the sine wave are all connected in an AC motor. First you'll look at the magnetic fields in a 3 phase motor and a split phase motor. Then you'll explore how resistance and current affect the speed of a motor.

Interplay Learning - AC Power

This AC Power course will provide you with a deeper understanding of alternating current and AC power, how it behaves and is generated. The course begins with a review of direct current (DC) power concepts, to make learning about alternating current...

Interplay Learning - AC System Tools - Pressure and Refrigerant Basics

This course covers the basics of pressure and refrigerants. Starting with barometric pressure, what it is, and how to measure it. After that we explore how to change pressure using a pump before moving on to the compound, or low-side, gauge. Finally...

Interplay Learning - Aftermarket Motors

In this course, you’re going to learn about the three types of HVAC motors available, PSC, variable speed, and constant torque. Each lesson will discuss how the motor operates, what affects its performance, factors to consider when replacing one...

Interplay Learning - Aftermarket Parts

In HVAC, a big part of the job is handling repairs, which often involves installing a new part. This course takes a look at some of the most common parts you encounter when working with these systems. First we’ll discuss capacitors, where you’ll...

Interplay Learning - Airflow Testing Procedures

In this course you will complete various simulations in which you’ll learn different methods for measuring airflow in a blower. You will look at the flow plate procedure, how to determine airflow using the static pressure differential, how to...

Interplay Learning - Ampacity and Wire Sizing

This course is all about a really fundamental and useful concept in electrical work – the ampacity of conductors—that is, the maximum amount of current that a conductor can carry on a continuous basis without getting dangerously hot. In the lessons...