High-voltage trailing cables must:
(a)
Meet existing trailing cable requirements and the approval requirements of the high-voltage continuous mining machine; and
(b)
Meet existing ground-check conductor requirements ( § 75.804) or have a stranded center ground-check conductor not smaller than a No. 16 A.W.G.
Code of Federal Regulations
[75 FR 17549, Apr. 6, 2010]