{"data":{"id":"us/30-cfr-77.803-2","jurisdiction":"us","citation":"30 CFR 77.803-2","heading":"-2 Ground check systems not employing pilot check wires; approval by the Secretary.","body":"Ground check systems not employing pilot check wires shall be approved by the Secretary only if it is determined that the system includes a fail safe design which will cause the circuit interrupter to open when ground continuity is broken.","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 I—Surface High-Voltage Distribution"],"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":"0df29e93307c7bac095316811907fd14d468b3383052d9d54d9afbf067663dc3","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-77.803-1","next":"us/30-cfr-77.804"},"notice":"GroundRules: Original legal text. Not legal advice."}