46 C.F.R. § 111.51-3 Protection of vital equipment.
Title 46 - Shipping
(a) The coordination of overcurrent protective devices must be demonstrated for all potential plant configurations. (b)Overcurrent protective devices must be installed so that: (1) A short-circuit on a circuit that is not vital to the propulsion, control, or safety of the vessel does not trip equipment that is vital; and (2) A short-circuit on a circuit that is vital to the propulsion, control, or safety of the vessel is cleared only by the protective device that is closest to the point of the short-circuit. [CGD 74–125A, 47 FR 15236, Apr. 8, 1982, as amended by CGD 94–108, 62 FR 23908, May 1, 1997]
Title 46: Shipping
PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS
Subpart 111.51—Coordination of Overcurrent Protective Devices
§ 111.51-3 Protection of vital equipment.
