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

    Highlights

    Mike Holt
    Interconnected Power Sources
    Sept. 16, 2024
    Article 705 covers the installation of electric power sources operating in parallel with the primary source of power.
    Mike Holt
    Aug. 19, 2024
    Disconnecting means and wiring methods for solar installations must meet requirements specific to solar photovoltaic systems.
    July 17, 2024
    The circuit requirements for PV systems have two major “add-ins” versus those of other circuits.
    June 13, 2024
    Do you understand the general requirements and the bonding requirements for solar installations?
    May 15, 2024
    Do you know the rules for service entrance conductors and service disconnects?

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    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.
    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.
    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.
    Sept. 13, 2023
    Conductor sizing and the requirements for disconnecting means are the main electrical considerations in a generator installation.
    Fig. 1. A motor branch-circuit OCPD must be able to carry the motor’s starting current.
    Aug. 9, 2023
    Do you know how to protect motors and related equipment from overcurrent and ground faults?