Maricopa Community Colleges  ABC220   19952-19956 
Official Course Description: MCCCD Approval: 11/28/95
ABC220 19952-19956 L+L 1 Credit(s) 1 Period(s)
Conductors/Wiring Systems
Types and requirements of conductors used in wiring systems. Includes insulation, current-carrying capacity, temperature ratings. Installing raceways, boxes and fittings in accordance with the National Electrical Code (NEC). Prerequisites: (Indentured status with Associated Builders and Contractors, Inc., and ABC130) or permission of the apprenticeship coordinator.
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MCCCD Official Course Competencies:
 
ABC220   19952-19956 Conductors/Wiring Systems
1. Identify electrical conductors for specific applications. (I, II)
2. Calculate voltage drop in both single and three phase applications. (II)
3. Interpret and apply NEC regulations governing conductors and NEC parallel and tap rules. (II)
4. Size conductors for specific loads. (III, IV, V )
5. Derate conductors for fill, temperature and voltage drop. (IV, V )
6. Select conductors for specific temperature ranges and atmospheres. (V)
7. Size raceways according to conductor fill and NEC installation requirements. (VI)
8. Calculate conduit fill using a percentage of the trade size conduit Inside Diameter (ID). (VII)
9. Identify pull/junction boxes and calculate size/bending radius according to NEC regulations, and calculate the required size of outlet boxes according to NEC regulations. (VIII, IX)
10. Identify wiring devices according to the National Electrical Manufacturers Association (NEMA) classifications and determine the size of wiring devices according to NEC and NEMA requirements for specific installations. (X)
11. Install boxes or enclosures for wiring devices and connect wiring devices (X, XI)
12. Describe NEC regulations governing the installation of wiring devices and install grounding wiring devices. (X-XIII)
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MCCCD Official Course Outline:
 
ABC220   19952-19956 Conductors/Wiring Systems
    I. Electrical conductors
        A. Methods of stranding
        B. Degree of hardness
        C. Bare, Tinned or coated
        D. Conductor size
        E. Compressed conductors
      II. Conductor application/calculations
          A. NEC
            1. Section 240-3
            2. Section 240-3 (a-m)
            3. Section 240-20 (a)
            4. Section 240-21
          B. Branch circuits
          C. Conductor protection
            1. Location of fuses
            2. NEC section 384-16 to 450-3
            3. NEC parallel rules
            4. NEC tap rules
        III. Properties of conductors
            A. Identifying conductors
            B. NEC Tables 310-16 to 310-19
            C. Standard overcurrent device sizes
          IV. Voltage drop
              A. Wire sizes based on resistance
              B. NEC section 373
              C. NEC Table 373-6 (a)
              D. Circular mil
              E. Conversion of square mils
              F. Resistance of conductors
              G. Resistance of copper
              H. Equations for conductor area
              I. Voltage drop equations
              J. Miscellaneous voltage drop equations
            V. Sizing conductors
                A. Resistance
                B. Voltage drop calculations
                C. Temperature ranges
                D. Atmospheres
              VI. Conduit fill requirements
                  A. Factors
                  B. Configuration
                  C. Weight
                  D. Clearance
                  E. Jam ratio
                  F. Coefficient of dynamic function
                  G. NEC Regulations
                VII. Conduit fill
                    A. Conduit ID percentage
                    B. Tables -NEC chapter 9
                  VIII. Conduit boxes
                      A. Identification
                        1. Pull boxes
                        2. Junction boxes
                      B. Sizing and bending
                        1. Sizing pull and junction boxes
                        2. Cabinets and cutout boxes
                      C. Calculations
                    IX. Outlet boxes-sizing
                      X. Wiring devices-NEMA and NEC
                          A. Switches
                          B. Relays
                          C. Contactors
                          D. Receptacles
                          E. Conductors
                          F. Connecting
                          G. Grounding
                        XI. Receptacles
                            A. Characteristics
                            B. Mounting
                            C. Types
                          XII. Locating receptacles
                              A. Residential occupancies
                              B. Commercial applications
                            XIII. Switches
                                A. Terminology
                                B. Identification
                                C. NEC requirements
                                D. Safety switches
                                  1. Heavy duty
                                  2. General duty
                                  3. Double throw
                                  4. NEC safety switches requirements
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