Maricopa Community Colleges  ELC164   19944-99999 
Official Course Description: MCCCD Approval: 02/22/94
ELC164 19944-99999 LEC 3 Credit(s) 3 Period(s)
Grounding and Bonding
Grounding and bonding terminology including National Electric Code (NEC) Articles 250. Interpreting code requirements for grounding and bonding. Code requirements for field installation. Prerequisites: None.
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MCCCD Official Course Competencies:
 
ELC164   19944-99999 Grounding and Bonding
1. Define specific terms used in conjunction with grounding. (I)
2. Explain the potential of electrical shock and how grounding prevents specific hazards. (II)
3. Explain the electrical theory and calculate specific electrical equivalent circuits. (III)
4. Identify specific electrical faults and explain the result in grounding circuits when faults occur. (IV)
5. Differentiate between ground and grounding electrodes; explain the grounding system of branch cicuits and describe the installation of a ground-fault circuit interrupter. (V)
6. Explain methods of installing and sizing grounding electrode conductors and explain reasons for code provisions of same. (VI)
7. List requirements of electrical distribution systems; explain when circuits are intentionally grounded using solidly-grounded system or impedance-grounded system. (VII)
8. Identify the grounded conductor at the service equipment location and describe methods of sizing when grounded conductors do no extend beyond the service equipment. (VIII)
9. Explain the purpose of bonding jumpers and types, materials, purpose, connections and methods of sizing. (IX)
10. Explain the purpose, types, identification, installation and sizing of equipment grounding conductors on the line and load side of service equipment. (X)
11. Explain the purpose of maintaining continuity by bonding equipment and enclosures on the line and load sides of service equipment and also describe the methods of bonding. (XI)
12. Explain the specifics for grounding equipment and enclosures including cord and plug connected, panelboard and isolated equipment. (XII)
13. Explain when the grounded (neutral) may be used for grounding equipment. (XIII)
14. Explain the purpose, operation and requirements for ground-fault circuit interrupters (GFCI). (XIV)
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MCCCD Official Course Outline:
 
ELC164   19944-99999 Grounding and Bonding
    I. Grounding terminology
        A. Overview
        B. Definitions
      II. Electrical shock
          A. Voltage
          B. Currents
          C. Path - human body
          D. Potential difference
          E. Safety
        III. Electrical theory and electrical circuits
            A. Ohms law
            B. Calculations
              1. Series circuits
              2. Parallel circuits
              3. Combination circuits
          IV. Electrical faults
              A. Direct
              B. Ground
              C. Stresses
              D. Impedance - grounded systems
              E. Ungrounded system
              F. Ground fault detectors
            V. Ground and grounding
                A. Electrodes
                B. Branch circuit grounding
                C. Ground-fault circuit interrupter
              VI. Installation
                  A. Methods
                  B. Sizing
                  C. Code provisions
                VII. Electrical distribution
                    A. Requirements
                    B. Intentionally grounded systems
                      1. Solidly
                      2. Impedance
                  VIII. Location and sizing grounded conductors
                      A. Direct-current system
                      B. Alternating current system
                      C. Multiple service disconnecting means
                      D. Sizing
                        1. Table 250-94
                        2. Service conductor greater than 1100 kcmil copper or 1750 kcmil aluminum
                        3. Service phase conductor are paralleled
                    IX. Bonding jumpers
                        A. Terminology--types
                        B. Materials
                          1. Copper
                          2. Other
                        C. Purpose
                        D. Connections
                        E. Sizing
                      X. Grounding conduction
                          A. Terminology
                          B. Line and load side of service equipment
                          C. Purpose
                          D. Types
                          E. Identification
                          F. Installation
                          G. Sizing
                        XI. Bonding equipment and enclosures
                            A. Terminology
                            B. Line and load sides
                              1. Where
                              2. Why
                              3. How
                            C. Methods
                          XII. Grounding equipment and enclosures
                              A. Cord and plug connected
                              B. Panelboard
                              C. Isolated equipment
                            XIII. "Neutral" grounded
                                A. Basic rule section 250-23
                                B. Supply side use
                                C. Second building
                                D. Separable derived system
                                E. Load-side use
                              XIV. Ground-fault, circuit interrupters (GFCI)
                                  A. Equipment
                                  B. Equipment feeder
                                  C. Definition of ground-fault protection
                                  D. Theory of operation
                                  E. Receptacles (GFCI)
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