Maricopa Community Colleges  WRT105LL   19986-20086 
Official Course Description: MCCCD Approval: 07/22/08
WRT105LL 19986-20086 LAB 1 Credit(s) 3 Period(s)
ELECTRICITY, MOTORS, AND CONTROLS FOR WATER STUDIES LAB
Diagramming and assembling series circuits, parallel circuits and wiring relays, thermostats, switches and lights. Electrical readings on compressors. Drawing wiring diagrams, wiring systems and checking electrical circuits. Troubleshooting electrical problems on three-phase motors and controls. Emphasis on safety.
Prerequisites: None. Corequisites: WRT105 or permission of Department or Division.
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MCCCD Official Course Competencies:
 
WRT105LL   19986-20086 ELECTRICITY, MOTORS, AND CONTROLS FOR WATER STUDIES LAB
1. Draw a diagram and safely assemble a series circuit using a switch and more than two light fixtures with bulbs, demonstrating the use of Ohm's Law and the power law to calculate . (I)
2. Draw a diagram and safely assemble parallel circuits using switches and light fixtures with bulbs, demonstrating the use of Ohm's Law and the power law to calculate results.(II)
3. Select appropriate meters to determine specific circuit assembly results and to determine coil and contact positions, demonstrating appropriate safety procedures. (I, II, III)
4. Select components to simulate loads, draw a diagram, write a sequence of operations, wire and perform meter tests on specific circuits, demonstrating appropriate safety procedures. (IV)
5. Design wiring diagrams to include, dual voltage, across-the- line start, part-wind start, start-stop stations and wire three-phase motors (IV)
6. Using specific systems and components mounted in the control panel, draw a wiring diagram, wire the system, and check for proper operation using test meters to prove electrical circuits, demonstrating appropriate safety procedures. (V)
7. Using factory wired systems (without diagrams), interpret wiring and diagram each system. (VI)
8. Determine sources of specific electrical problems including, open circuits, short circuits/incomplete wiring, and determine necessary corrections for specific problems. (VII)
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MCCCD Official Course Outline:
 
WRT105LL   19986-20086 ELECTRICITY, MOTORS, AND CONTROLS FOR WATER STUDIES LAB
    I. Series Circuit
        A. Diagram
          1. symbols
          2. switch
          3. light fixtures B. Assembly
          1. diagram interpretation
          2. components
          3. safety
        C. Calculations
          1. ohm's law
          2. power law
        D. Safety
      II. Parallel Circuit Diagram/Assembly
          A. Diagram
            1. symbols
            2. components
          B. Assembly
            1. switches
            2. fixture
            3. circuit
          C. Calculations
            1. Ohm's law
            2. power law
          D. Safety
        III. Meter Readings Safety
            A. Series circuit
              1. relays, contactors, magnetic line starter
              2. contact position
              3. diagram
              4. voltage
              5. contact current
              6. safety
            B. Parallel circuit
              1. relays, contactors, magnetic line starter
              2. contact position
              3. diagram
              4. voltage
              5. contact current
              6. safety
            C. Specific relays
              1. relays, contactors, magnetic line starter
              2. contact position
              3. diagram
              4. voltage
              5. contact current
              6. safety
          IV. Diagramming/Wiring Three Phase Motors
              A. Dual voltage
              B. Across-the-line
              C. Part-wind start
              D. Start-stop station
              E. Meter tests
              F. Safety procedures
            V. Diagramming/Wiring/Proving Systems
                A. Identify system components
                B. Draw wiring diagrams
                C. Meters to identify coils/contacts
                D. Wire system
                E. Evaluate system
              VI. Diagramming from Existing Wiring
                  A. Identify components
                  B. Diagram
                  C. Check - factory wiring
                  D. Evaluate differences
                VII. Electrical Problems
                    A. Troubleshooting procedure
                    B. Problems
                      1. open circuits
                      2. short circuits
                      3. incomplete wiring
                    C. Corrections
                    D. Safety
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