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SESK: Stuff Everyone Should Know · sesk.info/elec-deenergize-first

OSHA says live parts must be what before an employee works on or near them?

Live parts must be deenergized first.

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  1. Taped over
  2. Labeled with voltage
  3. Deenergized ✔

Why: De-energizing is the first line of defense. The exception is when it creates added hazards or is infeasible, and then energized work rules apply.

Huh, didn't know that: Under 1910.333, lockout or tagging is how you keep those parts off while you are exposed.

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If Usain Bolt was an electrician, his name would be Usain Volt.
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References

Answer: Deenergized. De-energizing is the first line of defense. The exception is when it creates added hazards or is infeasible, and then energized work rules apply.

  1. OSHA 29 CFR 1910.333 www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.333
    Live parts to which an employee may be exposed shall be deenergized before the employee works on or near them.
    Checked 2026-10-10.

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