Restricted approach boundary
Updated 2026-10-27
Data records
- Article 100 of NFPA 70E-2027 defines the restricted approach boundary as an approach limit at a distance from an exposed energized conductor or circuit part inside which the likelihood of electric shock is increased by electrical arc-over combined with inadvertent movement.
- In NFPA 70E-2027 the restricted approach boundary is the trigger for the energized electrical work permit of clause 130.3(A), the line the permit exemptions of clause 130.3(C) must not cross, the limit unqualified persons never cross under clause 130.4(F), and the boundary a qualified person crosses with a conductive object only under the insulation or guarding conditions of clause 130.4(G); its distances by voltage range sit in the third column of Table 130.4(E)(a) and Table 130.4(E)(b), with an adder for inadvertent movement.
Sources
- NFPA 70E-2027, Standard for Electrical Safety in the Workplace, 2027 edition, NFPA. Cited: clause Article 100; clause 130.3(A). Held as: Purchased single-user copy. Publisher page for NFPA 70E-2027
Obtaining the documents
- NFPA 70E-2027: available from the publisher
Changelog (2 entries)
| Date | Revision | Change |
|---|---|---|
| 2026-10-27 | created (gloss.restricted-approach-boundary.nfpa70e.definition) | |
| 2026-10-27 | created (gloss.restricted-approach-boundary.nfpa70e.role) |
Cite this page
Cite the governing standard for the fact itself; cite this page as the finding aid.
"Restricted approach boundary." Arc Flash Reference. 2026-10-27. https://www.arcflashreference.com/glossary/restricted-approach-boundary/.
Arc Flash Reference, Restricted approach boundary (Oct. 27, 2026), https://www.arcflashreference.com/glossary/restricted-approach-boundary/.
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title = {Restricted approach boundary},
howpublished = {\url{https://www.arcflashreference.com/glossary/restricted-approach-boundary/}},
organization = {Arc Flash Reference},
publisher = {Arc Flash Reference},
year = {2026},
note = {last substantive change 2026-10-27}
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