A basic introductory course in electrical theory and safety aspects designated to meet the electrical needs of the service technician for heating, refrigeration, and air conditioning industries. The identification, applications and code requirements for residential structures. A practical application of the concepts learned in theory, simulating a working environment. Observing and obeying the related electrical code requirements for electrical, heating, refrigeration, and air conditioning systems. As well as the proper identification, care and use of hand tools.