This course covers the techniques and calculations (including evaluation of expressions, order of operations, symbols of inclusion and power exponents) to determine load and sizing requirements for heating and cooling equipment. Included is the 24 hour method of load calculation and sizing of residential and commercial air conditioning and heating equipment as well as commercial refrigeration equipment. Additionally, the course covers the application of single and three phase motors. Applications include motor types, operation, components, control hookups, motor feeder and branch circuit conductors, motor protection, motor control circuits and motor connections and testing, connections, transformer schematics and auto transformers of low and high voltage systems.