Maricopa Community Colleges  ABC109   19936-19956 
Official Course Description: MCCCD Approval: 11/28/95
ABC109 19936-19956 LEC 2 Credit(s) 2 Period(s)
Introduction to Grounding and Wiring
Purpose and systems of grounding, including electrode/electrodes, grounding conductor and bonding systems. Functions and types of switches and boxes. Procedures for roughing-in and trimming-out wiring jobs. OSHA (Occupational Safety and Health Administraation) rules for ladder safety. Prerequisites: (Indentured status with Associated Builders and Contractors Inc., and ABC108) or permission of the apprenticeship coordinator.
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MCCCD Official Course Competencies:
 
ABC109   19936-19956 Introduction to Grounding and Wiring
1. Explain the purpose and theory of grounding and compare/contrast "system grounding" and "equipment grounding". (I)
2. Define the terms "ground," "grounded" and "grounding" and explain why electricians should always work under the assumption that "the possibility of getting shocked is present." (II)
3. Explain how the grounding system provides for lighting protection and define the following terms: "electrode system," "grounding conductor system" and "bonding." (III)
4. Define "bonding jumpers," explain why they are used and explain the purpose and operation of ground fault circuit interrupters. (IV)
5. Explain the difference between electrodes/electrode grounding, state the material/size of grounding conductors for specific situations, and explain the differences between AC and DC grounding systems. (V)
6. State the functions of specific difference types of switches. (VI)
7. Select the proper switches/receptacles for a residential wiring job and illustrate the connection of switches in residential wiring. (VII)
8. Select the proper size box for a given situation. (VIII)
9. Describe the basic procedures for roughing-in a wiring job. (IX)
10. Describe the basic procedures for trimming-out a wiring job. (X)
11. List specific OSHA ladder safety requirements. (XI)
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MCCCD Official Course Outline:
 
ABC109   19936-19956 Introduction to Grounding and Wiring
    I. Grounding
        A. Purpose
          1. Grounded
          2. Grounding
          3. Terminology
        B. Theory
          1. Protective grounding
          2. Other
        C. System grounding
          1. Neutral
          2. Ungrounded conductor
        D. Equipment grounding
      II. Terms and false assumption
          A. Definitions
            1. Ground
            2. Grounded - neutral
            3. Grounding
          B. False assumption
            1. Proper wiring
            2. Good contacts
        III. Lighting protection and definitions
            A. Lighting
              1. Ground electrode
              2. Surge arrester
            B. Electrode system
              1. Definition
              2. Methods
            C. Grounding conductor
              1. Grounding wire
              2. Equipment-grounding-conductor
              3. Ground connection
              4. Grounded wire
              5. Illustrations-dryer/fuses/circuit breakers
          IV. Bonding jumpers and ground fault circuit interrupters
              A. Bonding jumpers
                1. Definition
                2. Examples
                3. Service entrance panel
                4. Bus bar
                5. Equipment grounding/conductor enclosures
              B. Ground fault circuit interrupters
                1. Purpose
                2. Operation
                3. Ground fault
                4. NEC requirements
                5. GFCI breakers
                6. Commercial/industrial
                7. Other codes
            V. Electrodes, grounding conductors and AC/DC grounding systems
                A. Electrodes/electrode grounding
                  1. Description
                  2. Installation
                B. Grounding conductors
                  1. Equipment-installation
                  2. Size
                  3. Installation
                C. AC/DC
                  1. AC/DC system grounding conductor
                  2. Guidelines
                  3. Examples
              VI. Switches
                  A. Definition
                    1. Grades
                    2. Capacities
                    3. Purposes
                  B. Functions
                    1. Snap switches
                    2. Pole
                    3. Throw
                    4. Single-pole
                    5. Double-pole
                  C. Three-way switches
                  D. Four-way switches
                  E. Special switches
                  F. Photoelectric controls
                    1. Timer switches
                    2. Trippers
                  G. Receptacle outlet-plug
                VII. Switches and receptacles
                    A. Residential wiring
                    B. Illustrate connections
                  VIII. Selection and installation boxes
                      A. Selection
                      B. Conductors in a box
                        1. NEC provisions
                        2. Cables
                      C. Installing outlet boxes
                        1. NEC regulations/guidelines
                        2. Mounting - depth
                    IX. Roughing-in
                        A. Activities
                          1. Select/install boxes
                          2. Notching/drilling for cable
                          3. Pulling cable
                          4. Tagging/identifying conductors
                        B. Number of conductors
                      X. Installing outlet boxes
                          A. Mounting boxes
                            1. Mounting depth
                            2. Setout
                            3. Box center
                            4. Back splash
                          B. Cable installation
                          C. Nonmetallic-sheathed cable
                          D. Metallic-sheathed cable
                            1. Armored cable/BX
                            2. Bonding strip
                            3. With ground (WG)
                          E. Providing access for cable
                            1. Running board
                            2. Guard strips
                            3. Drilling for cable installation
                            4. R value
                            5. Cutting notches
                            6. Installing cable runs
                            7. Anchoring the cable
                            8. Installing cable runs: armored cable
                          F. Trimming-out residential wiring
                        XI. OSHA ladder safety rules
                            A. Broken ladders
                            B. Portable ladders
                            C. Passageways/doorways/driveways, etc.
                            D. Slide rails
                            E. Secured
                            F. Electrical work
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