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    • Code Basics

    Understanding the foundation of the National Electrical Code and applying its principles on the job and in the field

    Highlights

    NEC Requirements for GFCIs and AFCIs

    Jan. 17, 2024
    Do you know the specific locations where GFCI and AFCI protection are required?

    NEC Requirements for Fire Pumps

    Dec. 13, 2023
    Article 695 provides the minimum electrical requirements for installing fire pumps.
    Fig. 1. An electrically powered passenger vehicle needs a dedicated charging circuit. Article 625 provides the requirements for installing the conductors and equipment for electric vehicle charging, power export, or bidirectional current flow.

    NEC Requirements for EV Equipment

    Nov. 9, 2023
    The electrical conductors and equipment for connecting an electric vehicle to premises wiring must meet specific guidelines.
    Fig. 1. Locations are classified according to the properties of the hazard.

    NEC Requirements for Hazardous Locations

    Oct. 11, 2023
    Article 500 prepares you for properly applying Articles 501 through 516.
    Fig. 1 The rules of Art. 445 include where generators can be installed, nameplate markings, conductor ampacity, and disconnect requirements.

    NEC Requirements for Generators

    Sept. 13, 2023
    Conductor sizing and the requirements for disconnecting means are the main electrical considerations in a generator installation.

    Recommended

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    Apprentice's Guide to Cable and Tubing

    Sept. 2, 2024
    Master the different NEC cable and tubing requirements in this eBook with trainer Harold De Loach.
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    Fig. 1. Rigid metal conduit requirements can be found in NEC Art. 344.

    NEC Requirements for Metal Conduits

    April 14, 2023
    Do you know the rules for installing the four types of metal conduit listed in the NEC?
    Fig. 1. Shorter conductors and minimal bends improve SPD performance by helping to reduce conductor impedance during high-frequency transient events.

    NEC Requirements for Overvoltage Protection

    March 10, 2023
    Don’t rely on a single type of surge protection device; implement a strategy based on tiered protection.
    Fig. 1. The width of the working space can be measured from left to right, from right to left, or simply centered on the equipment.

    NEC Requirements for Working Clearances

    Feb. 9, 2023
    Don’t let adequate working space be “the final frontier” at your facility.
    Fig. 1. When all conductors within a raceway are the same size and have the same insulation type, you can use Annex C (Table 1) to determine the number of conductors permitted for a specific raceway size.

    Wiring Methods, Part 2 of 2

    Jan. 12, 2023
    Following the conductor and raceway installation rules makes for a safer installation process and a better final product.