{"data":{"id":"us/30-cfr-77.513","jurisdiction":"us","citation":"30 CFR 77.513","heading":"Insulating mats at power switches.","body":"Dry wooden platforms, insulating mats, or other electrically nonconductive material shall be kept in place at all switchboards and power-control switches where shock hazards exist. However, metal plates on which a person normally would stand and which are kept at the same potential as the grounded, metal, non-current-carrying parts of the power switches to be operated may be used.","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":"63c2f4231beaf15fc461732787c59e83744f5741b5b7fc01ad67bbc70b6d8d63","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-77.512","next":"us/30-cfr-77.514"},"notice":"GroundRules: Original legal text. Not legal advice."}