46 C.F.R. § 111.97-9 Overcurrent protection.
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Overcurrent devices must be arranged to isolate a fault with as little disruption of the system as possible. The relationship between the load and the rating or setting of overcurrent devices must meet the following: (a) The rating or setting of each feeder overcurrent device must be not less than 200 percent of its maximum load. (b) The rating or setting of a branch circuit overcurrent device must be not more than 25 percent of that of the feeder overcurrent device.
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PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS
Subpart 111.97—Electric Power-Operated Watertight Door Systems
§ 111.97-9 Overcurrent protection.
