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On a construction site, what must be done to deenergized circuits before work?

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  1. Turn off one switch and tell the crew
  2. Make them inoperative and tag every energizing point
  3. Post one sign at the job trailer

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References

  1. 29 CFR 1926.417(b) www.law.cornell.edu/cfr/text/29/1926.417 Checked 2026-10-11.

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