46 C.F.R. § 112.01-5 Manual emergency lighting and power system.
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A manual emergency lighting and power system is one in which a single manual operation, such as the manual operation of a switch from an “off” to an “on” position, is necessary to cause the emergency power source to supply power to the emergency loads.
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PART 112—EMERGENCY LIGHTING AND POWER SYSTEMS
Subpart 112.01—Definitions of Emergency Lighting and Power Systems
§ 112.01-5 Manual emergency lighting and power system.