Mar 28, 2024  
Course/Program Inventory 
    
Course/Program Inventory

ELM 2030 - Commercial Wiring III



Clock Hours: 58

Delivery Mode
on-ground

Course Description:
This course provides a wide variety of learning opportunities and hands-on lab experiences. It is designed to accommodate students who are studying commercial wiring installation, industrial wiring, EMT conduit bending techniques, rigid threaded conduit, Liquidtight® installation, and motor controls circuits. Students may also develop their skills in connecting circuit breakers, three and four-way switches, single and three phase motor connections, photo control, lighting timers, flexible conduit installation, and motor disconnecting means. The Future Tek CWT-300 Plus Commercial Wiring Training System includes real-world devices with curriculum covering Basic and Advanced Conduit Bending, Commercial Wiring, and Motor Controls. Also included in the curriculum are Written Exams Using the National Electric Code.

Student Learning Outcomes:
Basic Conduit Bending                           

Stub Up                                                 

  • Install an 18” stub. The stub up should run from the bottom of the service panel and connect to the device box.         

Stub Up                                                 

  • Install a 24” stub. The stub up should run from the bottom of the service panel and connect to the device box.          

Offset                                                 

  • Install a 5” offset that will clear over the top of the NEMA enclosure.                   

Offset                                                 

  • Install a 6”.  The offset should be run from the bottom of the 24” wireway to the top of a device box.                           

Offset                                                 

  • Install a “small kick” offset (1”) to a single gang handy box. Connect the other end of conduit to the panel

Back to Back Bend                                                 

  • Install a 24” back to back bend that connects from the bottom of the panel to the bottom of a 4” x 2” 

Three Bend Saddle                                                 

  • Install a 2” PVC that will serve as an object for the three-bend saddle to clear. Install a three-bend saddle that clears the 2” PVC and terminates at a 4” x 2” single gang handy box. Connect the opposite end of the conduit to the panel.

 Four Bend Saddle                                                 

  • Bend a four-bend saddle that will clear over a 6” x 6” NEMA enclosure.                                         

Advanced Conduit Bending 

Combination Bends                                                 

  • Bend multiple 90 degree and offset bends.         

Combination Bends                                                 

  • Bend multiple 90 degree and a back to back bend.

Combination Three Bend Saddles                                                 

  • Bend three bend saddles with 90-degree bends included.         

Combination Four Bend Saddles                                                 

  • Bend four bend saddles with 90-degree bends included.                     

Parallel Bends                                                 

  • Bend parallel 90-degree bends.         

Combination Bends                                                 

  • Bend a four-bend saddle over two vertical runs of conduit.

Rigid Conduit Installation                                                 

  • Cut, thread and install 1/2” rigid conduit. Practice installing LB’s.                            

Commercial Wiring

Motor Nameplates and Calculations                                                 

  • Using (1) single phase motor and (1) three phase motor, determine the full load current (FLC),heater size, proper conductor size, fuse size and another nameplate information.  Use the diagram to help determine the proper steps to motor calculations based upon the 2011 National Electrical Code.

Motor T-leads Connection Lab                                               

  • Connect motor leads according to the voltages indicated.            

Device Wiring, I                                                 

  • Install duplex receptacles 24” apart with the first duplex receptacle box located 36” from the edge of the trainer. The single pole switch box should be 36” from the edge of the trainer. Use ½” EMT.

Device Wiring II                                                 

  • Install a light controlled by a single pole switch. Two duplex receptacles are also installed in the Circuit but are not controlled by the switch. Use ½” EMT.                                        

Fluorescent Light and Ballast Wiring                                                 

  • Install a 4’ light fixture 36” from the panel controlled by a single pole switch.

Three Way Switching                                                 

  • Wire a light to be controlled at two different locations. Use ½” EMT.                

Four Way Switching                                                 

  • Wire a light to be controlled at three different locations. Use ½” EMT.

Motor and Motor Starter Connection                                                 

  • Wire a single-phase motor to a single phase starter and a three phase motor to a three phase starter.   

Photo and Timer Control                                                

  • Connect a 120V photo sensor to control a single light. Connect a 120V electromechanical timer to control  a single light. Use ½” EMT. 

Device Wiring III                                                 

  • Connect two light fixtures controlled by a single pole switch. Connect a GFCI receptacle that protects two additional 120V receptacles. Connect a 240V receptacle.       

Motor Control 

Logic Identification                                                 

  • Using the diagrams below, match the correct letter to the corresponding logic type.

Line Diagram Referencing and Numbering                                               

  • Using the diagrams below add reference numbers, cross reference numbers and wire ref. numbers.       

Establishing the Control Circuit Power                                                

  • Establish the control voltage and wire a control circuit in the motor control cabinet as shown.                    

Basic Start/Stop                                                 

  • Wire a simple start/stop station to control a 3-phase motor and use a memory circuit.                       

Multiple Start/Stop Stations                                                 

  • Wire a multiple start/stop station to control a single motor.   

Start/Stop Station with Indicator Lights                                                 

  • Wire a start/stop station with a green indicator light on when the motor is running and a red indicator                       

Start/Stop and Jog Circuit with Indicator Lights                                                 

  • Wire a start/stop station with a green indicator light on when the motor is running and a red indicator light on when the motor stopped. The circuit should also contain a selector switch so the motor can be jogged.     

Forward and Reverse Control                                                 ’

  • Wire a forward/reverse station with indicator lights. Use yellow pushbuttons for the forward and reverse controls.   A green light will indicate running in forward and a red light will indicate running in reverse. Use the mushroom head stop button to open the circuit.

Limit Switch Control                                                

  • Wire a circuit that simulates a door that is raised and lowered by limit switch control.
  • N Delay Timer                                                 
  • Wire an ON delay motor sequencing circuit where motor 2 starts five seconds after motor 1 is started.

OFF Delay Timer                                                 

  • Wire an OFF delay timing circuit where motor starts and runs for 10 seconds after motor 1 has stopped.