{"data":{"id":"us/46-cfr-111.51-5","jurisdiction":"us","citation":"46 CFR 111.51-5","heading":"-5 Protection of vital equipment.","body":"(a) The coordination of overcurrent protective devices must be demonstrated for all potential plant configurations.\n(b) Protective relays and overcurrent protective devices must be installed so that:\n(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\n(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.","path":["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"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"5287a428a1d3249db723dd515b5402b87ed2e9162ffed497e2e20ae9fd724452","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-111.51-4","next":"us/46-cfr-111.53-1"},"notice":"GroundRules: Original legal text. Not legal advice."}