30 CFR 77.701-3
§ 77.701-3 Grounding wires; capacity.
United States · 30 CFR — Mineral Resources · Status: effective
Cite this
- Citation
- 30 CFR 77.701-3, § 77.701-3 Grounding wires; capacity, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/134075
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Full text
Where grounding wires are used to ground metallic sheaths, armors, conduits, frames, casings, and other metallic enclosures, such grounding wires will be approved if:
(a) Where the power conductor used is No. 6 A.W.G., or larger, the cross-sectional area of the grounding wire is at least one-half the cross-sectional area of the power conductor.
(b) Where the power conductor used is less than No. 6 A.W.G., the cross-sectional area of the grounding wire is equal to the cross-sectional area of the power conductor.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.