{"data":{"id":"us/30-cfr-77.500","jurisdiction":"us","citation":"30 CFR 77.500","heading":"Electric power circuits and electric equipment; deenergization.","body":"Power circuits and electric equipment shall be deenergized before work is done on such circuits and equipment, except when necessary for troubleshooting or testing.","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":"957f1d8290083d6b8e5215c04e1a6e56c27d8d93544f1960bb1de40b0fea01d2","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-77.413","next":"us/30-cfr-77.501"},"notice":"GroundRules: Original legal text. Not legal advice."}