Maricopa Community Colleges  ABC129   19952-20032 
Official Course Description: MCCCD Approval: 11/22/94
ABC129 19952-20032 L+L 0.50 Credit(s) 0.50 Period(s)
Electrical Boxes and Fittings
National Electrical Code (NEC) criteria for selection of outlet boxes, pull boxes and junction boxes. Prerequisites: Indentured status with Associated Builders and Contractors, Inc., or permission of the apprenticeship coordinator.
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MCCCD Official Course Competencies:
 
ABC129   19952-20032 Electrical Boxes and Fittings
1. Describe the different types of nonmetallic and metal boxes. (I)
2. Explain the NEC requirements for box fill and calculate the required box size for specific number and size of conductors. (II)
3. Explain the NEC regulations for volume required per conductor in outlet boxes. (III)
4. Describe the NEC regulations governing pull and junction boxes. (IV)
5. Explain the purpose of conduit bodies and Type FS boxes. (V)
6. Describe the installation rules for installing boxes and fittings in hazardous areas. (VI)
7. Select and install boxes and fittings. (VII)
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MCCCD Official Course Outline:
 
ABC129   19952-20032 Electrical Boxes and Fittings
    I. Outlet Boxes and Fittings
        A. Terminology
        B. Octagon and round boxes
        C. Square boxes
        D. Device boxes
        E. Concrete boxes
        F. Boxes for damp and wet locations
      II. Sizing Outlet Boxes
          A. Sizing procedure
          B. Section 370-16 (NEC)
          C. Table 370-16a (NEC)
          D. Calculations
        III. Outlet Box Capacity
            A. Extensions
              1. Components
              2. Cubic-inch capacity
            B. Deductions
              1. Fixture studs
              2. Hickeys
              3. Fixture stud extensions
            C. Neutral components
              1. Grounding clips and screws
              2. Wire nuts
              3. Cable connectors
            D. Box sizing calculation
          IV. Pull and Junction Boxes - NEC Regulations
              A. Straight pulls
              B. Angle or U pulls
              C. Installation
              D. Sizing calculations
            V. Conduit Bodies - Purpose
                A. Type C condulets
                B. Type LB condulets
                C. Type T condulets
                D. Type X condulets
                E. FS and FD boxes
                F. Pulling elbows
                G. Entrance ell (SLB)
              VI. Outlet Boxes in Hazardous Locations - Rules
                  A. Class I locations
                  B. Class II locations
                  C. Class III locations
                  D. Seal-off fittings
                VII. Fittings and Boxes - Selection and Installation
                    A. EMT
                    B. Rigid, aluminum and IMC
                    C. Locknuts and bushings
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