Transmission and Distribution: Overhead Distribution Systems

4.3 7 Reviews SKU: RV-11368Duration: 60 Minutes

The purpose of this interactive online course is to teach the basic layout of overhead distribution systems, to explain how to identify circuits and equipment in the field, and to introduce delta- and wye-connected distribution systems. The basic theory underlying the operation of delta and wye systems is presented, and the differences between them are discussed. At the conclusion of this course, participants should be able to describe the basic layout of an overhead distribution system and identify circuits and equipment in the field. They should understand the basic characteristics of delta and wye systems and should be able to identify delta and wye circuits in the field. They should also understand the importance of identifying whether a system is connected delta or wye before any work is performed.

Course Details


Training Time: 60 minutes

Compatibility: Desktop Only

Based on: Industry Standards and Best Practices

Languages: English

Learning Objectives

  • By the end of this course, you will be able to:Identify the major components of a typical overhead distribution system.Distinguish between primary and secondary distribution systems.Identify common overhead distribution system layouts. Recognize and identify distribution poles, pole hardware and conductors.Recognize and identify various types of distribution poletop equipment including transformers, voltage regulators, and more.Distinguish between delta systems and wye systems.Recognize and identify a 34.5 KV primary distribution system.Explain the function of a dual voltage transformer.Describe some common steps for locating and isolating trouble on an overhead distribution system.

Customer Reviews


This was a very informative course.

“This was a very informative course.”

Jeff B. Verified Customer


excellent series of courses, great graphics

“excellent series of courses, great graphics”

Michael J. Verified Customer


Great presentation!

“Great presentation!”

Bernard R. Verified Customer


Overall a very good presentation

“Overall a very good presentation.”

Daniel J. Verified Customer



This customer provided only a star rating and no written review.

George P. Verified Customer


Very Clear

“Illustrations were super helpful.”

Andrea O. Verified Customer


Clearly identified components. Good Graphics

“Clearly identified components. Good Graphics”

TODD H. Verified Customer

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