46 C.F.R. § 112.30-10 Restoration of normal source potential.
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When the potential from the normal source is restored to 85 to 95 percent of its normal value, the emergency loads must transfer automatically to the normal source.
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PART 112—EMERGENCY LIGHTING AND POWER SYSTEMS
Subpart 112.30—Emergency Systems Having an Automatically Connected Storage Battery as the Sole Emergency Power Source
§ 112.30-10 Restoration of normal source potential.
