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(B) Auxiliary Power Supply Wiring
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Equipment that has a separate input for an auxiliary power supply shall be wired in compliance with Article 725. Battery installation shall be in accordance with Article 480. This section shall not apply to the use of uninterruptible power supply (UPS) equipment, or other sources of supply, that are intended to act as a direct replacement for the primary circuit power source and are connected to the primary circuit input.
Informational Note: Refer to NFPA 72-2019, National Fire Alarm and Signaling Code, where equipment is used for a fire alarm system.
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