Maricopa Community Colleges  ELA251AD   19952-20086 
Official Course Description: MCCCD Approval: 07/22/08
ELA251AD 19952-20086 LEC 1 Credit(s) 1 Period(s)
Load Control Devices
Introduction to load control devices. Includes operation, installation procedures, testing and troubleshooting.
Prerequisites: Approval by the Phoenix Electrical Joint Apprenticeship and Training Committee.
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MCCCD Official Course Competencies:
 
ELA251AD   19952-20086 Load Control Devices
1. Define the purpose of the EL-1 meter and identify its effects on energy costs. (I)
2. Identify the standard types of load control devices. (I)
3. Explain the sales and service procedures for load control devices. (I)
4. State the standard operating principles for the following load control devices: Interlock systems, load clippers current transformers, and load controllers. (II,III,IV,V)
5. Choose the appropriate load control devices which best fits specific consumer's needs. (II,III,IV,V)
6. Describe the installation of the following load control devices: Interlock systems, load clippers, current transformers, and load controllers. (II,III,IV,V,VI)
7. Compare and contrast the advantages and disadvantages of the Enertrol vs. Futuretrol load controller. (V)
8. Test and describe troubleshooting operating problems for the various types of load control devices. (VI)
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MCCCD Official Course Outline:
 
ELA251AD   19952-20086 Load Control Devices
    I. El-1 Meter Theory - Load control Devices
        A. Standard Meter Costs
        B. El-1 Meter Costs
          1. Winter Rates
          2. Summer Rates
        C. Principles of Operation
          1. Uncontrolled KW's
          2. Controlled KW's
        D. Sales/Service Procedures
      II. Interlock Systems
          A. Theory of Operation
            1. Appliances Types
            2. Demand Load Controllers
            3. Relays
            4. Control Mechanisms
          B. Major Features
          C. Specifications
          D. Installation Procedures
            1. Unpacking
            2. Mounting Location
            3. Assembly Into Housing
            4. Wiring
            5. Securing Cover
        III. Load Clippers
            A. Theory of Operation
              1. Priority Principles
              2. Appliance Selection/Priorities
            B. Major Features
            C. Specifications
            D. Installation Procedures
              1. Inspection of Circuit Board tracks
              2. Mounting Location
              3. Assembly Into Housing
              4. Wiring
              5. Securing Cover
          IV. Current Transformers
              A. Applications
              B. Theory of Operation
              C. Installation Procedures
                1. Determine Polarity
                2. Determine Magnetic Field
                3. Wiring
            V. Load Controllers
                A. Theory of Operation
                B. Major Features
                C. Installation Procedures
                  1. Relays
                  2. A/C Units
                  3. Inspection of Circuit Board Tracks
                  4. Mounting Location
                  5. Assembly Into Housing
                  6. Wiring
                  7. Securing Cover
                D. Types
                  1. Enertrol
                  2. Futuretrol
              VI. Testing/Troubleshooting
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