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e-CFR data is current as of November 25, 2020

Title 46Chapter ISubchapter JPart 112Subpart 112.20 → §112.20-15


Title 46: Shipping
PART 112—EMERGENCY LIGHTING AND POWER SYSTEMS
Subpart 112.20—Emergency Systems Having a Temporary and a Final Emergency Power Source


§112.20-15   Transfer of emergency loads.

(a) When the potential of the final emergency power source reaches 85 to 95 percent of normal value, the emergency loads under §112.15-5 must transfer automatically to the final emergency power source and, on a passenger vessel, this transfer must be accomplished in no more than 45 seconds after failure of the normal source of power.

(b) When the potential from the normal source has been restored, the emergency loads must be manually or automatically transferred to the normal source, and the final emergency power source must be manually or automatically stopped.

(c) If the potential of the final emergency power source is less than 75 to 85 percent of normal value while supplying the emergency loads, the temporary emergency loads under §112.15-1 must transfer automatically to the temporary emergency power source.

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