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Rethinking Business Security for the New Normal

A new security study found that physical security incidents keep growing year over year, and businesses are struggling to keep up and stay secure.

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Most Recent

  • 2023 NEC Section 210.8(A)(5): GFCI Protection for Basements

    Here are some important 2023 NEC changes made to 210.8(A)(5), which covers rules for GFCI outlets in basements.

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  • 2023 NEC Section 210.8(A)(7): GFCI Protection for Areas with Sinks and Food Preparation

    Here are the 2023 NEC changes made to Section 210.8(A)(7), which covers rules for GFCI outlets near areas with sinks.

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  • Five More Big 2023 NEC Changes That Are Coming Soon

    The 2023 National Electrical Code is here! This article covers more changes to help soften the blow of transitioning into the 2023 NEC code cycle.

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  • Emerging Technologies for System Integrators in 2023

    With a new year ramping up, now is a good time to look at the emerging technologies from 2022 that are primed to take 2023 by storm.

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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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Motor Calculations – Part IV: Branch-Circuit Short-Circuit & Ground-Fault Overcurrent Protection

Branch-Circuit Short-Circuit and Ground-Fault Overcurrent Protection is the final article of a four part series. The series is titled “Motor Calculations” and covers the Code and calculations for single general motor applications.

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Motor Calculations – Part II: Motor Circuit Conductors

We considered how to properly size a typical motor branch circuit using the motor load as determined with the appropriate table and then multiplying that number by 1.25, reference 430.22.

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Variable Frequency Drives (VFD) Theory and Troubleshooting

By: David Herres – Variable Frequency Drives (VFD’s), also referred to as Adjustable Speed Drives, are prominent in today’s workplace. They are used in elevator, water pump, high-volume air compressor applications and material-handling systems wherever speed and torque characteristics of AC motors are regulated. In Thomas Edison’s time, the DC […]

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Don't wait to let the Electrical Inspector teach you the new 2020 NEC. Save time, save money, and pass inspections the first time with the NEC Challenge.

Learn 156 of the most important 2020 NEC changes by having Code-based Q&A delivered by text or email three times a week.

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