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Data record gloss.temporary-protective-grounding.osha1910-269.equipment-rating

Verified 2026-10-28 Confidence: High

Under 29 CFR 1910.269, protective grounding equipment is capable of conducting the maximum fault current that could flow at the point of grounding for the time needed to clear the fault, has an ampacity not less than that of the conductor size given in the datum value, and has an impedance low enough not to delay the protective devices should the lines or equipment be accidentally energized. The requirements are stated in paragraph (n)(4).

Value: No. 2 AWG copper

Provenance29 CFR 1910.269 supports data record gloss.temporary-protective-grounding.osha1910-269.equipment-rating, which is cited on the entry Temporary protective grounding.SOURCE29 CFR 1910.26929 CFR 1910.269Regulation, clause (n)(4)DATA RECORDgloss.temporary-protective-grounding.osha1910-269.equipment-ratinggloss.temporary-protecti..Verified 2026-10-28ENTRYTemporary protective groundingTemporary protective gro..No revisions
Provenance. Where this record comes from and where it is used: the cited source, the record itself and the entry that cites it.
Provenance: the chain from source to entry.
StepItemDetail
Source29 CFR 1910.269Regulation, clause (n)(4)
Data recordgloss.temporary-protective-grounding.osha1910-269.equipment-ratingVerified 2026-10-28
EntryTemporary protective groundingNo revisions
Subject
Temporary protective grounding (Glossary)
Kind
Standard scope
Source
29 CFR 1910.269, current edition, clause (n)(4), 1910.269 - Electric power generation, transmission, and distribution (with Appendices A to G; Appendix B, Working on Exposed Energized Parts), OSHA. Regulation text. Agency copy of 29 CFR 1910.269
Also stated in
  • 29 CFR 1910.269, paragraph (n)(4)(i) to (iii) (the ellipses drop the item numerals; the note that follows names two publishers and is not excerpted) (eCFR current as of 2026-10-26).
    Read the reference passage
    "Protective grounding equipment shall be capable of conducting the maximum fault current that could flow at the point of grounding for the time necessary to clear the fault. [...] Protective grounding equipment shall have an ampacity greater than or equal to that of No. 2 AWG copper. [...] Protective grounds shall have an impedance low enough so that they do not delay the operation of protective devices in case of accidental energizing of the lines or equipment."

    29 CFR 1910.269, paragraph (n)(4)(i) to (iii) (the ellipses drop the item numerals; the note that follows names two publishers and is not excerpted), eCFR current as of 2026-10-26. Agency copy of 29 CFR 1910.269

    The current standard governs; this passage is a public-domain description of the practice dated eCFR current as of 2026-10-26.

Beside
gloss.temporary-protective-grounding.nfpa70e.steps; std.nfpa-70e.structure.120-6-8-9-grounding; gloss.temporary-protective-grounding.definition

History

Every recorded change to this data record, oldest first.
DateChange
2026-10-28created

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Cite the governing standard for the fact itself; cite this page as the finding aid.

"Data record gloss.temporary-protective-grounding.osha1910-269.equipment-rating." Arc Flash Reference. 2026-10-28. https://www.arcflashreference.com/data/gloss.temporary-protective-grounding.osha1910-269.equipment-rating/.