use of electrical meters

: ELECTRICAL TROUBLESHOOTING:

This subject introduces students to basic electrical circuits found in the HVAC entry-level field. Students who complete this subject will:
Understand Basics of AC and DC circuits
the use of electrical meters,
reading electrical diagrams, electrical distribution systems in residential and commercial buildings
Learn how to wire simple control circuits
Learn about single and three phase circuits
Be exposed to common electrical components and learn how to wire relays, transformers, thermostats, wiring devices, capacitors and actual mockup wiring instruction.
Installation and operation of residential line and low voltage controls used to control warm air heating, air conditioning, and heat pump applications.
learn the operation of various electrical devices used in AC/R systems and the procedures for troubleshooting them.
It incorporates principles of relays and other switching mechanisms and covers the basic principles of reading schematic wiring diagrams.
troubleshoot electrical controls and electrical systems in order to repair them.
Identify on schematic diagrams common electrical symbols and differentiate between operating and safety controls.
Describe the different types of electrical diagrams, stating the purpose and application of each and in lab exercises use them in determining the sequence of operation.
how to isolate a circuit or component that has failed using a process call “Hopscotching” to identify the problem.
Identify and explain step-up and step-down transformers, and the appropriate wiring of each to supply different power requirements.
Explain the principles of singe phase and three phase motor operation, how capacitors are applied on single phase motors, and the different types of motor protection.
Use in lab exercises the procedures for testing single and three phase motors including hermetic compressors and how to determine and use the winding