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NEC Article 230, Services

Let’s take a closer look at Article 230 and the NEC 2020 Code changes, which covers service conductors and equipment for control and protection of services.

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  • 2020 NEC | Article 590, Temporary Installations

    Because temporary electrical installations present a special set of hazards, they have their own Article in the NEC code. Read more to learn about how to safely reinstall previously used services, parts, or components in a temporary installation.

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NEC 70, Article 250, Section 250.121(B), Metal Frame of Building or Structure

Article 250 is arguably the most important article in NEC 70, and much of its content is devoted to the proper sizing and installation of equipment grounding conductors. First, let us consider the purpose of an equipment grounding conductor (EGC). We know that EGC’s provide a low impedance path from the equipment to the overcurrent protective device (or ground detector for high-impedance grounded systems) so that a fault condition can be quickly cleared. Hence, EGC’s are a critically important safeguard to persons and equipment. 

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