{"data":{"id":"us/30-cfr-18.49","jurisdiction":"us","citation":"30 CFR 18.49","heading":"Connection boxes on machines.","body":"Connection boxes used to facilitate replacement of cables or machine components shall be explosion-proof. Portable-cable terminals on cable reels need not be in explosion-proof enclosures provided that connections are well made, adequately insulated, protected from damage by location, and securely clamped to prevent mechanical strain on the connections.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER B—TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS","PART 18—ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES","Subpart B—Construction and Design Requirements"],"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":"57fd02b45d18d0e04dfaf01cfc980da7bee446d6ad0720b19790b0e0f7b4309f","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-18.48","next":"us/30-cfr-18.50"},"notice":"GroundRules: Original legal text. Not legal advice."}