1. (a) Guarding.

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

      1. (i) From the power center cable coupler for a distance of 10 feet inby the power center;
      2. (ii) From the entrance gland for a distance of 10 feet outby the last strain clamp on the continuous mining machine; and,
      3. (iii) At any location where the cable could be damaged by moving equipment.
   2. (2) Guarding must be constructed using nonconductive flame-resistant material or grounded metal.

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

   1. (1) Suspended from the mine roof; or

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

      1. (i) A minimum length of 33 inches;
      2. (ii) A minimum width of 17 inches;
      3. (iii) A minimum height of 3 inches;
      4. (iv) A minimum cable placement area of two and one half-inches (2 1/2″) high by four and one-quarter inches (4 1/4″) wide;
      5. (v) Made of nonconductive material;
      6. (vi) Made of material with a distinctive color. The color black must not be used; and
      7. (vii) Made of material that has a minimum compressive strength of 6,400 pounds per square inch (psi).

[75 FR 17549, Apr. 6, 2010]