Outcomes
In order to successfully complete this course, the student will:
1. Calculate the peak and effective voltage or current values for an AC waveform and the phase relationship between two AC waveforms.
2. Describe the voltage and current phase relationship in a resistive AC circuit, the voltage and current transients that occur in an inductive circuit, and the voltage and current transients that occur in a capacitive circuit.
3. Define inductive reactance and state how it is affected by frequency and define capacitive reactance and state how it is affected by frequency.
4. Explain the relationship between voltage and current in different types of circuits.
5. Describe the effect that resonant frequency has on impedance and current flow in a series or parallel resonant circuit.
6. Define bandwidth and describe how it is affected by resistance in a series or parallel resonant circuit.
7. Explain true power, apparent power, reactive power, and power factor as they relate to AC circuits.
8. Explain basic transformer action.
9. Define ampacity, NEMA design letter, branch circuit, nonautomatic, circuit breaker, overcurrent, controller, overload, duty, power factor, equipment, rated full-load speed, full-load amps, rated horsepower, remote control circuit, ground fault circuit interrupter, interrupting rating, service factor, motor circuit switch, thermal cutout, and thermal protector.
10. Describe the various types of motor enclosures, how the rated voltage of a motor differs from the system voltage, the basic construction and components of a three-phase squirrel cage induction motor, and explain the relationships among speed, frequency, and the number of poles in a three-phase induction motor.
11. Describe how torque is developed in an induction motor and how and why torque varies with rotor reactance and slip.
12. Define percent slip and speed regulation.
13. Explain how the direction of a three-phase motor is reversed and describe the component parts and operating characteristics of a three-phase wound-rotor induction motor and a three-phase synchronous motor.
14. Define torque, starting current, and armature reaction as they apply to DC motors
15. Explain how the direction of rotation of a DC motor is changed.
16. Describe the design and characteristics of a DC shunt, series, and compound motor, dual-voltage motors and their applications, the methods for determining various motor connections, and general motor protection requirements as delineated in the NEC®.
17. Explain the purpose of grounding and the scope, and define ground related terms.
18. Distinguish between a short circuit and a ground fault and between system grounding and equipment grounding.
19. Use NEC Tables to size the grounding electrode conductor for various AC systems, to size the equipment grounding conductor for raceways and equipment, to define electrodes, and explain the resistance requirements for electrodes.
20. Explain the function of the main bonding jumper in the grounding system and size the main bonding jumper for various applications.
21. Size the main bonding jumper for a service utilizing multiple service disconnecting means.
22. Explain the NEC® requirements for the installation and physical protection of grounding electrode conductors, for bonding of enclosures and equipment, for grounding of enclosures and equipment, for grounding separately-derived systems, including transformers and generators, for grounding at more than one building, and for grounding requirements for systems over 600 volts.
23. Explain effectively grounded, its importance in clearing ground faults and short circuits and the purposes of the grounded conductor (neutral) in the operation of overcurrent devices.
24. Describe the process of conduit bending using power tools, avoiding excessive waste, correcting damaged conduit, and modify existing bends.
25. Bend offsets, kicks, saddles, segmented, and parallel bends.
26. Compute the radius, degrees in bend, developed length, and gain for conduit up to six inches.
27. Identify all parts of popular electric and hydraulic benders.
28. Describe the different types of nonmetallic and metallic boxes.
29. Calculate the required box size for any number and size of conductors.
30. Properly locate, install, and support boxes of all types.
31. Explain the radius rule when installing conductors in pull boxes.
32. Describe the purpose of conduit bodies and Type FS boxes.
33. Install the different types of fittings used in conjunction with boxes
34. Describe the various methods of installing conductors in conduit, how cable reels are transported to the pulling site, how mandrels, swabs, and brushes are used to prepare conduit for conductors, the operation of power fish tape systems, the types of cable pullers, the process of high-force cable pulling, how to support conductors in vertical conduit runs, the installation of cables in cable trays, and the importance of communication during a cable-pulling operation.
35. Calculate the probable stress or tension in cable pulls.
36. Explain NEC, NEMA, NFPA, and safety requirements pertaining to each major topic.
Instructor(s) for this course must be approved by the State of Wyoming, Department of Fire Prevention & Electrical Safety Office.
Students will be assessed through module exams and in-class performance tests.