SafetyQuestion 418 of 521
You opened the disconnect for a 480V motor circuit and applied your personal lock and tag. What is the FINAL step required before you may treat the conductors as safe to touch?
a.Wait 30 minutes for any capacitors to bleed off
b.Confirm the tag is signed and dated
c.Test the conductors with an adequately rated voltage tester, then re-test the tester on a known live source to prove it works
d.Notify the building owner in writing
Explanation
Verifying the absence of voltage with a rated tester, and proving the tester is functioning before and after (live-dead-live), is the required final step. Waiting and checking the tag are part of lockout/tagout but do not confirm zero energy. Notifying the owner is not a safety verification of the conductors.
Law Reference: Cal/OSHA Title 8 §3314Practice all 521 questions free — no signup required.
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