MEC 156 - Motors and Motor Controls

Credits: 3
3 Skills Lab Hours

Prerequisites: MEC 103 or Instructor Permission
Description
This course introduces the basic concepts of single-phase motors, three-phase motors and motor control circuits. Students perform a series of hands-on exercises in the lab utilizing the various motors. Students incorporate circuit protection and operator safety in various configurations of motor and motor controls.

Learning Outcomes
Upon successful completion of the course, the student will:

Describe the various types of motors including direct current and alternating current motors and single-and three-phase motors.
Identify the disconnects and protective devices used in motor control circuits.
Connect a control transformer for use in a motor control circuit.
Interpret a control ladder logic schematic diagram to identify the components needed to construct the circuit.
Connect a motor control circuit based on a control ladder logic schematic diagram and demonstrate its operation.
Troubleshoot a motor reversing control circuit.
Demonstrate proper safety practices for working with industrial power and motor control systems.

Listed Topics

Safety
Fuses and disconnects
Overcurrent protection devices
Transformers
Motor starters
Seal-in circuits and indicators
Switches
Relay logic
Motor contactors
Troubleshooting techniques

Reference Materials
Instructor-approved textbook and materials

Students who successfully complete this course acquire general knowledge, skills and abilities that align with CCAC’s definition of an educated person. Specifically, this course fulfills these General Education Goals:

Critical Thinking & Problem Solving
Quantitative & Scientific Reasoning

Approved By: Dr. Quintin B. Bullock Date Approved: 03/09/2026
Last Reviewed: 03/09/2026

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