Electrical Theory an Application for HVACR

OBJECTIVES:



Understand different units of measurement



IdenƟfy series, parallel, and combinaƟon circuits and find voltage, current, resistance, and

waƩage



IdenƟfy the difference between single‐ and three‐phase circuits, and understand their

applicaƟons



Recognize electrical symbols



Understand the procedures for electrical measurements such as voltage, current, resistance,

and waƩage



Know the differences between conductors, insulators, and semi‐conductors



Understand wire sizing



Define protecƟon devices and tesƟng procedures



Explain the differences between loads and switches



Know tesƟng procedures for loads and switches



Explain the differences between step‐up and step‐down transformers



Describe the funcƟon of a solenoid



Know the procedures for tesƟng transformers



Explain the differences between relays contactors and motor line starters



Know the procedures for tesƟng relays contactors and line starters



Explain funcƟons and test procedures for defrost Ɵmers



Describe the different thermostats and their funcƟons, as well as test procedures