46 C.F.R. § 112.20-3 Normal source for emergency loads.
Title 46 - Shipping
(a) The normal source for emergency loads must be the ship's service generating plant. (b) The power from the ship's service generating plant for the emergency loads must be supplied to the emergency switchboard through automatic transfer switches.
Title 46: Shipping
PART 112—EMERGENCY LIGHTING AND POWER SYSTEMS
Subpart 112.20—Emergency Systems Having a Temporary and a Final Emergency Power Source
§ 112.20-3 Normal source for emergency loads.
