30 CFR 77.803-1 - Fail safe ground check circuits; maximum voltage.
Code of Federal Regulations - Title 30: Mineral Resources (December 2005)
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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 i - SURFACE HIGH - VOLTAGE DISTRIBUTION
77.803 - 1 - Fail safe ground check circuits; maximum voltage.
The maximum voltage used for ground check circuits under 77.803 shall not exceed 96 volts.
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