{"data":{"id":"us/30-cfr-75.701-4","jurisdiction":"us","citation":"30 CFR 75.701-4","heading":"-4 Grounding wires; capacity of wires.","body":"Where grounding wires are used to ground metallic sheaths, armors, conduits, frames, casings, and other metallic enclosures, such grounding wires will be approved if:\n(a) The cross-sectional area (size) of the grounding wire is at least one-half the cross-sectional area (size) of the power conductor where the power conductor used is No. 6 A.W.G., or larger.\n(b) Where the power conductor used is less than No. 6 A.W.G., the cross-sectional area (size) of the grounding wire is equal to the cross-sectional area (size) of the power conductor.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","Subpart H—Grounding"],"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":"a1f6cb3c9fcb99f322250c56de2c5ad721438dab6026b3869b484026b6c9031d","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-75.701-3","next":"us/30-cfr-75.701-5"},"notice":"GroundRules: Original legal text. Not legal advice."}