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    Courtesy of EASA.
    Note how the winding of this motor is completely overheated in all phases.
    When an electric motor fails, use a proven methodology that incorporates cause analysis and the 5-why method.
    Feb. 15, 2024
    Photo 1. This bearing was relubricated with an excessive quantity of grease.
    Optimize the lifetime and performance of machines through proper relubrication frequency and quantity.
    Aug. 10, 2023
    Www Ecmweb Com Sites Ecmweb com Files Squirrel Cage Motors Figure 1
    How to make sure the motor is matched to your specific application
    March 20, 2019
    Always check the surface temperature of a motor with a digital thermometer
    There’s no way to determine if a motor is running hot just by touching the frame; and doing so can be dangerous.
    Jan. 26, 2015
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    Learn how to find and correct out of voltage conditions for electric motors
    Dec. 18, 2014

    Tom Bishop, P.E.

    Senior Technical Support Specialist

    Bishop, P.E., joined the staff of the Electrical Apparatus Service Association (EASA) following more than 30 years of engineering experience at electrical machinery manufacturers and electrical apparatus service firms. Holding a BS in electrical engineering and a professional engineer’s license, Bishop has authored dozens of technical articles and papers as well as presented numerous seminars on electric motor application, maintenance, and repair. He is chairman of EASA’s Technical Services Committee and a principal member of the National Fire Protection Association Electrical Equipment Maintenance Committee (NFPA 70B).

    Photo: akekoksomistock/iStock/Thinkstock
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    The current of a three motor line lead is not balanced.
    Nov. 4, 2014
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    Correct interpretation of five operating parameters for NEMA, IEC induction motors
    June 12, 2013
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    Best practices of ANSI/EASA AR100-2010: Recommended Practice for the Repair of Rotating Electrical Apparatus
    June 22, 2011