30 C.F.R. § 56.12013 Splices and repairs of power cables.
Title 30 - Mineral Resources
Permanent splices and repairs made in power cables, including the ground conductor where provided, shall be: (a) Mechanically strong with electrical conductivity as near as possible to that of the original; (b) Insulated to a degree at least equal to that of the original, and sealed to exclude moisture; and (c) Provided with damage protection as near as possible to that of the original, including good bonding to the outer jacket.
Title 30: Mineral Resources
PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES
Subpart K—Electricity
§ 56.12013 Splices and repairs of power cables.