Maricopa Community Colleges  ABC226   19962-20032 
Official Course Description: MCCCD Approval: 11/28/95
ABC226 19962-20032 LEC 1 Credit(s) 1 Period(s)
Raceways, Wiring Devices, Boxes and Fittings
Sizing, selecting, and installing raceways, junction boxes, outlet boxes and wiring devices. Calculating fill requirements according to National Electrical Code (NEC) regulations. Calculating bending radii in boxes and cabinets. Types and purpose of wiring devices and calculating maximum loads on such devices. Prerequisites: (Indentured status with the Arizona Builders Alliance and ABC129) or permission of the apprenticeship coordinator.
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MCCCD Official Course Competencies:
 
ABC226   19962-20032 Raceways, Wiring Devices, Boxes and Fittings
1. Define terms and explain how to size, select and install raceways, outlet boxes, pull and junction boxes, conduit and conduit bodies according to NEC requirements. (I)
2. Calculate conduit fill using a percentage of the trade size conduit inside diameter. (I)
3. Calculate the required bending radii in specific boxes and cabinets and explain when cable should be racked in pull or junction boxes. (I)
4. Describe how to select, size, install or connect wiring devices in accordance with National Electrical Code (NEC) and National Electrical Manufacture's (NEMA) requirements. (II)
5. Explain how to select and install the proper box enclosures according to the appropriate NEC or NEMA classifications. (II)
6. Describe how to connect a 480 volt receptacle. (II)
7. Calculate the maximum allowable load on specific wiring devices. (II)
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MCCCD Official Course Outline:
 
ABC226   19962-20032 Raceways, Wiring Devices, Boxes and Fittings
    I. Raceways/boxes and fill requirements
        A. Terms
          1. AWG (American Wire Gauge)
          2. Conduit fill
          3. Junction box
          4. Knockout
          5. Phase conductor
          6. Switch
          7. Jack
          8. Split wire
          9. Other
        B. Conduit fill requirements
        C. Factors influencing cable fit
          1. Configuration
          2. Weight
          3. Clearance
          4. Jam ratio
          5. Coefficient of dynamic friction
        D. Conduit fill
        E. Conduit bodies, pull boxes and junction boxes
          1. Installation requirements
          2. Sizing pull and junction boxes
          3. Cabinets and cutout boxes
        E. Outlet boxes
        F. Sizing outlet boxes ABC226Effective Term:
      II. Wiring devices
          A. Receptacles
            1. Characteristics
            2. Mounting
            3. Types
          B. Locating receptacles
            1. Residential
            2. Commercial
          C. Switches
            1. Bypass isolation
            2. General use
            3. General use snap
            4. Isolating
            5. Motor circuit
            6. Transfer
            7. Common terms
            8. Identification
            9. Selection, installation and location
          D. NEC requirements for switches
          E. Heavy Duty Switches
            1. Switch blade and jaws
            2. Fuse clips
            3. Terminal lugs
            4. Insulating material
            5. Operating mechanism and cover latching
            6. Enclosures
            7. Interlocked receptacles
            8. Accessories
          F. General duty switches
            1. Switch blade and jaws
            2. Fuse clips
            3. Terminal lugs
            4. Insulating material
            5. Operating mechanism and cover latching
            6. Enclosures
          G. Double throw safety switches
          H. NEC safety switch requirements
            1. NEC Article 373
            2. NEC Article 38-0
            3. NEC Article 430-H
            4. NEC Article 440-B
            5. NEC Section 450-8(c)
          I. Connecting receptacles
          J. Load calculations
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