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SESK: Stuff Everyone Should Know · sesk.info/osha-gfci-temporary-receptacles

What protects workers using 120-volt temporary receptacles on construction sites?

GFCI protection is required for personnel protection.

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  1. Ground rods only
  2. GFCI protection ✔
  3. A lockout/tagout log

Why: 1926.404(b)(1)(ii) requires approved ground-fault circuit interrupters for 120-volt, 15 and 20 ampere temporary receptacles used by employees.

Huh, didn't know that: GFCI protection is required unless the employer uses an assured equipment grounding conductor program.

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References

Answer: GFCI protection. 1926.404(b)(1)(ii) requires approved ground-fault circuit interrupters for 120-volt, 15 and 20 ampere temporary receptacles used by employees.

  1. 29 CFR 1926.404(b)(1)(ii) www.law.cornell.edu/cfr/text/29/1926.404
    All 120-volt, single-phase, 15- and 20-ampere receptacle outlets on construction sites ... shall have approved ground-fault circuit interrupters for personnel protection.
    Checked 2026-10-10.

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