MCCCD Official Course Competencies:

ELC105 2003 Fall – 2008 Fall

Electricity for Industry

1.

Explain the relationships and electrical charges of basic parts of atoms. (I)

2.

Compare and contrast conducting materials and insulating materials. (II)

3.

Explain the industrial applications of electricity and magnetism. (III)

4.

Draw basic and complex electrical circuits, using appropriate symbols and conventions. (IV)

5.

Define terms related to specific electrical quantities (V)

6.

Using Ohm's Law equations solve specific problems. (V)

7.

Explain the operation of and safety standards for use of electrical meters for industrial applications that determine voltage, resistance, and current. (VI)

8.

Calculate resistive electrical loads for series, parallel and series-parallel circuits according to rules for each type of circuit and Ohm's law equations. (VII)

9.

Define specific terms associated with power sources and alternating power production. (VIII)

10.

Evaluate specific electrical sources at location, determining voltage, phase and type of transformer service. (VIII)

11.

Explain types of reactive loads and power factors for loads related to industrial applications. (IX)

12.

Explain the effects of capacitive and inductive components on voltage and current in terms of phase angle relationships. (IX, XI)

13.

Explain electro-magnetic solenoid including its function and relationship to relays, contactors, magnetic line starters, and solenoid valves. (IX, XII)

14.

Given resource materials, calculate wire size based upon wire resistance, length of run, load, temperature and other derating factors. (X)

15.

Apply selected sections of the National Electric Code. (X)

16.

List the types of single phase motors. (XI)

17.

Explain how the electrical fields produce rotating effects. (XII)

18.

Determine winding resistance of motor terminals. (XII)

19.

Diagram the wiring of the basic refrigeration system explaining the function of each of the components. (XII)

20.

Perform basic problem analysis and troubleshooting functions on the circuit. (XII)

MCCCD Official Course Outline:

ELC105 2003 Fall – 2008 Fall

Electricity for Industry

I. Basic Atomic Structure

A. The Nucleus

1. proton

2. neutron

B. The Electron shells

1. electron

2. valence

II. Material Differentiation

A. Conductors

1. number of electrons in valance shell

2. distance of valance shell from nucleus

B. Insulators

1. number of electrons in valance shell

2. distance of valance shell from nucleus

III. Electricity and Magnetism

A. Magnetism

1. polarity

2. attraction and repulsion

3. lines of force

B. Electric current

1. electron flow

2. polarity

3. attraction and repulsion

4. electromagnetic fields

5. direct and alternating current

IV. The Basic Electrical Circuit

A. Power supply, conductor, switch, load

B. Electrical drawings

1. ladder diagrams

2. schematic (point-to-point) wiring diagrams

3. electrical symbols

V. Electrical Terms, Ohm's Law, and Equations

A. Terms

1. coulomb

2. ampere

3. voltage

4. ohm

5. watt

B. Ohm's law

1. statement

2. equation

C. Equations

1. E=IR

2. P=IE

VI. Electrical Meter Operations/Safety/Purpose

A. Volt meter

B. Ammeter

C. Ohmmeter

D. Readings

1. analog

2. digital

VII. Resistance Loads

A. Resistors

1. fixed

2. variable

3. electric heating elements

B. Series

1. total resistance

2. current

3. voltage

4. rules

5. equations

C. Parallel

1. total resistance

2. current

3. voltage

4. rules

5. equations

D. Series-parallel

1. rules

2. equations

VIII. Electrical Services

A. Definition of terms

1. hertz

2. single phase

3. three phase

4. delta

5. wye

6. phase voltage

7. line voltage

8. phase current

9. line current

10. phase angle

11. power factor

B. Evaluation of sources/voltage/phase/type

1. transformers (Power)

2. loads

3. alternating power generation

4. open delta

C. Distribution panel box(es)

1. phasing

2. circuits

IX. Reactive Loads

A. Inductive loads

1. relays

2. motors

3. chokes

4. phase angle shift

5. parallel and series inductive loads

B. Capacitive loads

1. capacitors

2. phase angle shift

3. parallel and series capacitors

C. Combination loads

1. calculations

2. power factor correction

X. Wire Sizing/Code/Insulation

A. Wire resistance

1. diameter

2. type of materials

3. length

4. load

5. temperature

6. other factors

B. National Electrical Code (NEC)

1. specific reference

2. other notes

C. Insulation

1. type

2. voltage rating

XI. Single Phase Motors

A. Split phase

B. Shaded pole

XII. Basic Refrigeration System Wiring

A. Refrigeration compressors / motors

1. windings

2. starting

3. reversing the direction

4. dual voltage

5. starting capacitors

6. running capacitors

7. terminal identification

B. Electro-magnetic solenoid

1. definition

2. function

C. Control Devices

1. time clocks

2. thermostats

3. temperature switches

4. pressure switches

D. Control wiring

E. Trouble-shooting