§ 75.827 - Guarding of trailing cables.  


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  • § 75.827 Guarding of trailing cables.

    (a) Guarding.

    (1) The high-voltage cable must be guarded in the following locations:

    (i) From the power center cable coupler for a distance of 10 feet inby the power center;

    (ii) From the entrance gland for a distance of 10 feet outby the last strain clamp on the continuous mining machine; and,

    (iii) At any location where the cable could be damaged by moving equipment.

    (2) Guarding must be constructed using nonconductive flame-resistant material or grounded metal.

    (b) Suspended cables and cable crossovers. When equipment must cross any portion of the cable, the cable must be either:

    (1) Suspended from the mine roof; or

    (2) Protected by a cable crossover having the following specifications:

    (i) A minimum length of 33 inches;

    (ii) A minimum width of 17 inches;

    (iii) A minimum height of 3 inches;

    (iv) A minimum cable placement area of two and one half-inches (212″) high by four and one-quarter inches (414″) wide;

    (v) Made of nonconductive material;

    (vi) Made of material with a distinctive color. The color black must not be used; and

    (vii) Made of material that has a minimum compressive strength of 6,400 pounds per square inch (psi).

    [75 FR 17549, Apr. 6, 2010]