1926.404(b)(1)(iii)(E): OSHA rule
Key takeaways
- 1926.404(b)(1)(iii)(E) is part of OSHA's construction standards (29 CFR Part 1926, Subpart K).
- Related part: 1926.404(b) Branch circuits (138 citations).
- Free 5-minute toolbox talk for your crew below.
In this article
What this rule covers
29 CFR 1926.404(b)(1)(iii)(E) is one requirement inside 1926.404 Wiring design and protection, an OSHA construction standard (Part 1926, Subpart K). The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.
Official text
(E) All required tests shall be performed:
(1) Before first use;
(2) Before equipment is returned to service following any repairs;
(3) Before equipment is used after any incident which can be reasonably suspected to have caused damage (for example, when a cord set is run over); and
(4) At intervals not to exceed 3 months, except that cord sets and receptacles which are fixed and not exposed to damage shall be tested at intervals not exceeding 6 months.
Source: eCFR, text current as of 2026-10-15. Read all of 1926.404.
Free toolbox talk
A 5-minute crew talk on 1926.404(b)(1)(iii)(E), plus alerts when this rule changes. Free.
OSHA interpretation letters
- Extension cord grounding continuity requirements. (1993-08-09)
Related parts of this rule
- 1926.404(b) Branch circuits 138 citations
- 1926.404(b)(1) Ground-fault protection 137 citations
- 1926.404(b)(1)(ii) Ground-fault circuit interrupters 50 citations
- 1926.404(b)(1)(iii)(C) 42 citations
- 1926.404(b)(1)(iii) Assured equipment grounding conductor program 42 citations
- 1926.404(b)(1)(i) General 41 citations
- 1926.404(b)(2) Outlet devices 1 citations
- 1926.404(b)(1)(iii)(G)
- 1926.404(b)(1)(iii)(D)
Get your crew competent
Trainers on Black Belt Safety: Marc Harvey, Dana Reyes
Trainers and suppliers: feature your business on this rule for $25/month.
About this page
Sources
- 29 CFR 1926.404 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly
3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.