30 C.F.R. · Mineral Resources
30 C.F.R. § 75.703.2

Approved grounding mediums.

Title 30 C.F.R. ● ACTIVE Primary Source
Regulatory Text

30 C.F.R. § 75.703.2 — Approved grounding mediums.

§ 75.703–2 Approved grounding mediums. For purposes of grounding offtrack direct-current machines, the following grounding mediums are approved: (a) The grounded polarity of the direct-current power system feeding such machines; or, (b) The alternating current grounding medium where such machines are fed by an ungrounded direct-current power system originating in a portable rectifier receiving its power from a section power center. However, when such a medium is used, a separate grounding conductor must be employed.

Source: ecfr.gov · govinfo.gov — public domain Official Source ↗
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30 C.F.R. § 75.703.2
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The regulatory text of 30 C.F.R. § 75.703.2 is reproduced from the official Code of Federal Regulations as published by the Office of the Federal Register and the National Archives and Records Administration.
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