{"data":{"id":"us/30-cfr-77.506","jurisdiction":"us","citation":"30 CFR 77.506","heading":"Electric equipment and circuits; overload and short-circuit protection.","body":"Automatic circuit-breaking devices or fuses of the correct type and capacity shall be installed so as to protect all electric equipment and circuits against short circuit and overloads.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","Subpart F—Electrical Equipment—General"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-30.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:24Z","sha256":"4bd07e776c77baac649efd54313fdcda4a1195759ea525df27f37741cebc10cf","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-77.505","next":"us/30-cfr-77.506-1"},"notice":"GroundRules: Original legal text. Not legal advice."}