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Our 2023 National Electrical Code Course is Now Available!

The 2023 National Electrical Code (NEC) is here! This article covers NEC history, the update process, and a chapter breakdown! Stay tuned in the months ahead for more updates.

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  • The 2023 National Electric Code Has Arrived!

    The 2023 National Electrical Code (NEC) is here! This article covers NEC history, the update process, and a chapter breakdown! Stay tuned in the months ahead for more updates.

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2020 NEC Changes to 430.122 Conductors – Minimum Size and Ampacity

Changes to the 2020 NEC include the addition of several paragraphs in section 430.122. These changes will help the user to determine the correct ampacity for conductors used with power conversion equipment. The Adjustable Speed Drive is one type of power conversion equipment that provides a means of adjusting the speed of an electric motor, 100. A Variable Frequency Drive, VFD, is an adjustable speed drive that controls the speed, the RPM, of a motor by controlling the frequency and voltage supplied to a motor. The changes made in 430.122 Conductors – Minimum Size and Ampacity apply to Adjustable Speed Drive Systems.

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