Transfers ToNot transferableDescriptionApprentice. This course introduces concepts of electrical principles used in air conditioning and refrigeration. Topics include meters, circuits, contactors, relays, thermostats, pressure switches, motors, overloads, circuitry, troubleshooting, Kirchhoff's Law, and Ohm's Law. Safety topics for the Heating, Ventilation, Air Conditioning and Refrigeration (HVACR) industry will also be covered. It is sponsored by the United Association of Union Plumbers, Fitters, Welders, and Service Technicians and is for apprenticeship only. Course enrollment is limited to those who have been accepted by the union local responsible for the section. 