{"data":{"id":"us/46-cfr-111.12-3","jurisdiction":"us","citation":"46 CFR 111.12-3","heading":"-3 Excitation.","body":"In general, excitation must meet sections 4-8-3/3.13.2(a), 4-8-5/5.5.1, 4-8-5/5.5.2, and 4-8-5/5.17.5(e) of the ABS Marine Vessel Rules (incorporated by reference; see § 110.10-1 of this subchapter), except that those for mobile offshore drilling units must meet sections 6-1-7/5.17.1 and 6-1-7/5.19.1 of the ABS MOU Rules (incorporated by reference; see § 110.10-1 of this subchapter). In particular, no static exciter may be used for excitation of an emergency generator unless it is provided with a permanent magnet or a residual-magnetism-type exciter that has the capability of voltage build-up after two months of no operation.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER J—ELECTRICAL ENGINEERING","PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS","Subpart 111.12—Generator Construction and Circuits"],"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":"eb958c73ae84029ae3b056ec12f641040dd00a2f4c5bb9f83c299e5985fec8a9","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-111.12-1","next":"us/46-cfr-111.12-5"},"notice":"GroundRules: Original legal text. Not legal advice."}