Official Course Description: MCCCD Approval: 12/11/01
ELC115 19892-20016	LEC	2 Credit(s)	2 Period(s)
Industrial and Commercial Power Distribution
Basic industrial and commercial electric power distribution. Techniques of low and medium voltage power systems. Selection of electrical distribution components. Single and three-phase systems, one-line diagrams, motors, transformers, protective devices, power factor, demand factor, conductor selection. System planing, grounding, protection. Energy management. Prerequisites: Permission of instructor.

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MCCCD Official Course Competencies:
ELC115   19892-20016	Industrial and Commercial Power Distribution

1.	Describe the application of one-line diagrams to a power system and describe symbols. (I)
2.	Demonstrate load calculations based on national and local Electrical Codes for low voltage systems. (II)
3.	Compare and contrast electric motor and transformer applications. (III)
4.	List and describe methods and devices used for system overcurrent protection. (IV)
5.	List and describe switchgear application for medium voltage distribution systems. (V)
6.	Compare relays used for power system protection. (VI)
7.	Describe electrical equipment and system grounding requirements. (VII)
8.	Demonstrate voltage drop and power factor correction calculations. (VIII)
9.	Describe electric distribution system planning factors and procedures. (IX)
10.	Compare conductor, wiring method, and apparatus selection with reference to codes and standards. (X)
11.	Compare and contrast medium-voltage systems. (XI)
12.	List and describe power system requirements for computer use. (XII)
13.	Compare and contrast energy management factors. (XIII)

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MCCCD Official Course Outline:
ELC115   19892-20016	Industrial and Commercial Power Distribution

I. Electric Power System Fundamentals A. AC Circuits and Power B. Three-Phase Systems C. Voltage Selection D. One-Line Diagram II. Low Voltage Systems (under 600 volts) A. Service Entrance B. Power Distribution C. Types of Loads D. Power Factor E. Code Load Calculations III. Motor and Transformer Fundamentals A. Motor Wiring Types B. Motor Characteristics C. Transformer Symbols and Selection D. Transformer Terminal Marking and Polarity E. Parallel Operation of Transformers IV. Overcurrent Protection A. Short Circuit Calculations B. Circuit Breakers C. Fuses and Fuse Selection D. Switch Selection V. Medium-Voltage Switchgear (2.4 to 35 kv) A. Service Entrance Requirements B. Diversity and Demand Factors C. Switchgear Characteristics and Selection VI. Protective Relaying A. Relaying Philosophy B. Relay Types C. Relaying Quantities VII. Electrical Equipment and System Grounding A. Types of Grounds B. System Grounding C. Equipment Grounding D. Step and Touch Potential E. Grounding Practices VIII. Voltage Variation and Power Factor Adjustment A. Effect of Low Voltage B. Voltage Drop Consideration C. Calculating Voltage Drop D. Power Factor Improvement IX. System Planning A. When to Modernize B. Load Estimation C. Circuit Arrangements D. System Selection E. Estimating Cost X. Electric Power Distribution A. Conductor Systems B. Wiring Methods C. Distribution Apparatus D. Codes and Standards XI. Medium-Voltage Systems (2.4, 4.16 and 13.8 kv) A. System Comparisons B. Conductors C. Lighting Considerations XII. Power for Computers A. Special Problems and Solutions B. Power Supply Conditioning C. Small Group Activity XIII. Energy Management A. Conservation B. Fuel Substitution C. Energy and Load Management D. Lighting and Load Considerations

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