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Electric Utility Service Entrance Equipment Sizing Calculations

Lee Layton, PE

This 3-hour course is designed to give practicing engineers and system designs relevant concepts for sizing electric utility service entrance equipment. The course explains numerous techniques for determining the appropriate load values to consider to both residential and commercial loads. The course is full of practical ideas on how to determine load based on limited information. The course has sections on selecting transformers based on loading and voltage needs and for sizing service entrance conductors. There are also sections on calculating flicker limits and short-circuit currents. The information in this course can be used as a guideline to develop your own sizing criteria. Note: this course is directed toward the utility equipment and does not cover customer owned equipment requirement of the NEC.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.

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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.