Original air date June 13, 2024

How to design and specify transfer switches

Electrical engineers should understand when and where to specify transfer switches, and how to make design decisions.

Transfer switch equipment is available in a variety of types including manual or automatic, or open and closed transition, with a wide array of features. Electrical engineers that must specify the appropriate transfer switch for a specific application require a clear understanding of site needs, applicable codes and application restraints. Understanding these factors will help specify the right transfer switch equipment that is best suited for the application.

Transfer switch equipment is a critical component in electrical systems, offered in diverse types such as manual or automatic, and open or closed transition. Choosing the right transfer switch for a project demands comprehensive knowledge of site requirements, relevant NEC codes, and project limitations. Consulting engineers play a pivotal role in this process, as their expertise ensures the selection of transfer switch equipment precisely tailored to a client’s needs.

By attending this training, consulting engineers will gain an in-depth understanding of these crucial factors, empowering them to make informed decisions and specify the most suitable transfer switch equipment for their clients’ applications. Additionally, the training will cover generator to grid specific applications of transfer switches, providing engineers with comprehensive knowledge to address various transfer switch scenarios effectively.

Learning objectives:

  • Understand the differences between types of automatic transfer switches and their applications.
  • Discuss the basic operation of transfer switches and transition types to aid in the specification of equipment.
  • Learn about the operation modes of bypass switches and isolation methods.
  • Identify when it is appropriate to use a 4-pole switch as compared to a 3-pole switch.

Presented By:
Makesi Sule, Senior Technical Specialist, Cummins

Moderated By:
Gary Cohen, Content Manager, WTWH Media

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