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480V-120V Single-Phase Transformer for 600 V Loads

David A. Snyder, PE

This course covers how to wire a standard 240x480V-120/240V or 240x480V-120V transformer as an autotransformer in such a way as to power 600 V, single-phase loads. A standard 240x480V-120/240V or 240x480V-120V transformer is often used as a control circuit transformer (CCT) to derive 120 VAC control power from 480 V or 240 V single-phase power, in applications such as industrial control panels, combination lighting contactors, and in motor control center (MCC) cubicles.

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.

AIA Members: You must take the courses listed under the category "AIA/CES Registered Courses" if you want us to report your Learning Units (LUs) to AIA/CES. If you take courses not registered with AIA/CES, you need to report the earned Learning Units (not qualified for HSW credits) using Self Report Form provided by AIA/CES.