- (a) Underground high-voltage cables used in resistance grounded systems shall be equipped with metallic shields around each power conductor with one or more ground conductors having a total cross sectional area of not less than one-half the power conductor, and with an insulated external conductor not smaller than No. 8 (A.W.G.) or an insulated internal ground check conductor not smaller than No. 10 (A.W.G.) for the ground continuity check circuit.
- (b) All such cables shall be adequate for the intended current and voltage. Splices made in such cables shall provide continuity of all components.
[38 FR 4976, Feb. 23, 1973]