
ng definition, “Coordination (Selective). Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the choice of overcurrent protecti.
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NFPA 70®-2023 Editio
701.32(A) General. Legally required standby system(s) overcurrent protective devices (OCPDs shall be selectively coordinated with all supply-side and load-side OCPDs.
20-A CB is selectively coordinated with the 225-A CB for available short-circuit currents up to 1800 A and with the 600-A CB for available short-circuit currents up to 2400 A.
Example Drawing Notes “Selectively coordinate the emergency branch per 2020 NEC Article 700.32”
Selective coordination must be determined by a licensed professional engineer or other qualified and knowledgeable persons engaged primarily in the design, installation, or maintenance of …
Overcurrent protective devices must selectively coordinate for the full range of available overcurrents, from overload to the maximum available fault current, and for the full range of …
Overcurrent protective devices are deemed selectively coordinated only when the nearest upstream overcurrent protective device opens for any possible overcurrents (overload or fault …