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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 j - LOW- AND MEDIUM - VOLTAGE ALTERNATING CURRENT CIRCUITS
77.902 - 3 - Attachment of ground conductors and ground check wires to equipment frames; use of separate connections.
In grounding the frames of stationary, portable, or mobile equipment receiving power from resistance grounded systems, separate connections shall be used.
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