GroundRules
46 CFR 111.51-5: -5 Protection of vital equipment.
Where this section sits in the code
- Title 46—Shipping
- CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
- SUBCHAPTER J—ELECTRICAL ENGINEERING
- PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS
- Subpart 111.51—Calculation of Short-Circuit Currents and Coordination of Overcurrent Protective Devices
(a) The coordination of overcurrent protective devices must be demonstrated for all potential plant configurations.
(b) Protective relays and 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.
Collected 2026-08-27T02:26:22Z. Source file · JSON