---
kind: "section"
citation: "30 C.F.R. § 77.906"
title: "30"
number: "77.906"
heading: "Trailing cables supplying power to low-voltage mobile equipment; ground wires and ground check wires."
url: "https://uscodex.org/cfr/30/77.906"
---

# §77.906. Trailing cables supplying power to low-voltage mobile equipment; ground wires and ground check wires.


On and after September 30, 1971, all trailing cables supplying power to portable or mobile equipment from low-voltage three-phase resistance grounded power systems shall contain one or more ground conductors having a cross-sectional area of not less than one-half the power conductor. Such trailing cables shall include an insulated conductor for the ground continuity check circuit except where a no less effective device has been approved by the Secretary to assure continuity. Splices made in low-voltage trailing cables shall provide continuity of all components.


## Notes

### Authority

Authority: 30 U.S.C. 811.

### Source

Source: 36 FR 9364, May 22, 1971, unless otherwise noted.