Official Course Description: MCCCD Approval: 07/22/08
ELA249 19944-20086	L+L	2 Credit(s)	4 Period(s)
Residential Electrical III
National Electrical Code (NEC), Codeology System. Communication and customer relations. Overcurrent protection, circuits, signal devices and thermostats. Magnetism and eletromagnetism, electrical generation, raceways, cabinets, panel boards, cables and fixtures. Prerequisites: (Apprenticeship status with Phoenix Electrical Joint Apprenticeship and Training Committee and ELA114) or permission of Apprenticeship Coordinator.

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MCCCD Official Course Competencies:
ELA249   19944-20086	Residential Electrical III

1.	Explain thepurpose and intention of the National Electrical Code (NEC) and list the installations covered by the Code. (Article 90) (I)
2.	Describe the differences between: definitions, phraseology, terminolgy and common sense as defined in Chapter One of the NEC. (II)
3.	Demonstrate use of the Codeology System in locating specific information in the NEC. (III)
4.	Describe three specific barriers to effective communication and explain the difference between "feedback" and "tellback". (IV)
5.	Explain the importance of satisfied customers and why job performance, behavior and appearance are important to the future of electrical workers and electrical contractors. (V)
6.	Demonstrate electron flow in series, parallel and combination contractors. (VI)
7.	Calculate voltage drop to determine the proper wire sizes to lower line loss to meet NEC requirements. (VII)
8.	Describe the parts of an electric service and locate answers to specific job related questions using the Code, building specifications and blueprints. (VIII)
9.	Explain what a "feeder" is and determine the proper size entrance conductors for a single family dwelling. In addition, calculate the total connected load. (IX)
10.	Explain why overcurrent protection is necessary. Explain grounding and why it makes it possible for overcurrent devices to work quickly. (X)
11.	Calculate voltage drop and power loss in single phase and three phase circuits. (XI)
12.	Demonstrate use of a watt-hour meter. (XII)
13.	Explain the purpose or function of fuses, list the three types of plug fuses and explain the differences between them. (XIII)
14.	Using the Code, locate the answers to specific job related questions about Class 1, 2 and 3 circuits and explain the difference between light and power circuits and those covered in Article 725. (XIV)
15.	Explain when to connect push button in parallel or in series when controlling one or more signaling devices and draw appropriate wiring diagrams. (XV)
16.	Explain the function of a thermostate, list at least three critical factors to consider when locating a thermostat and six factors which affect its operating differential. (XVI)
17.	List and describe the functions of specific automatic controls used for residential heating systems and explain the difference between line voltage and low voltage furnace controls. (XVII)
18.	Describe how electron flow creates a magnetic field and explain how electromagnetism performs useful work. (XVIII)
19.	Identify the principle parts and operations of electrical generators and explain the basic principles involved in generating electromotive force. (XIX)
20.	Explain the purpose and demonstrate the use of specific raceways, cabinets, panel boards, cords, cables and fixtures. (XX)

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MCCCD Official Course Outline:
ELA249   19944-20086	Residential Electrical III

I. National Electrical Code (NEC) A. Purpose B. Installations (Art. 90) 1. Private dwelling unit 2. Office building 3. Underground mine 4. Mobile homes 5. Distribution station II. Code Language A. Definitions B. Phraseology C. Terminology D. Common sense III. Codeology A. Classifications 1. Plan 2. Build 3. Use B. Use 1. Numbering systems 2. Clues C. Exceptions 1. Purpose 2. Affect upon rules IV. Communication A. Barriers 1. Listener 2. Sender-message 3. Physical B. Feedback vs. tellback V. Marketing A. Importance of customer satisfaction B. Factors in customer satisfaction 1. Job performance 2. Behavior 3. Appearance VI. Electron Flow A. Series circuits B. Parallel circuits C. Combination circuits VII. Calculations A. Voltage drop B. Wire size C. Line loss VIII. Electric Service A. Definition B. Components IX. Feeders and Conductors A. Feeder B. Service entrance conductors C. Load calculations X. Overcurrent Protection A. Need B. Overcurrent devices C. Grounding conductors XI. Voltage Calculations A. Single phase circuits B. Three phase circuits XII. Watt Hour Meter A. Types B. Reading technique XIII. Fuses A. Purpose B. Plug fuses 1. Types 2. Differences XIV. Circuits A. Class 1, 2, & 3 B. Light C. Power D. Article 725 XV. Signal wiring A. Parallel B. Series C. Wiring diagrams XVI. Thermostats A. Function B. Location factors C. Operating differential factors XVII. Automatic Furnace Controls A. Line voltage B. Low voltage XVIII. Magnetism A. Electron flow B. Electromagnetism C. Electrical Devices XIX. Electricity Generation A. Generator 1. Components 2. Operations B. Electromotive force XX. Ssytem Components A. Raceways B. Cabinets C. Panel boards D. Cords E. Cables F. Fixtures

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