(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 (2½″) high by four and one-quarter inches (4¼″) 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]