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Intermittent duty rating of trailing cables.
Underground coal mine power systems. Proceedings: Bureau of Mines Technology Transfer Seminar, Pittsburgh, Pennsylvania, September 16, 1982. Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 8893, 1982 Sep; :74-81
Federal Bureau of Mines sponsored research conducted at Penn State University and West Virginia University has resulted in recommendations to the Mine Safety and Health Administration (MSHA) concerning the maximum current ratings for trailing cables used at various duty cycles. If approved, the ratings would permit smaller size cables than those presently required by 30 CFR 18, yet would provide equivalent safety when protected by circuit breakers which include overload trip capabilities. Computer and calculator programs for calculating allowable ampacity (current capacity) are presented.
Underground-mining; Electrical-equipment; Electrical-hazards; Electrical-safety; Electrical-systems
Underground coal mine power systems. Proceedings: Bureau of Mines Technology Transfer Seminar, Pittsburgh, Pennsylvania, September 16, 1982
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division