Current through May 31, 2024
Section 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 (21/2") high by four and one-quarter inches (41/4") 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