SafetyQuestion 420 of 521
A crew of four electricians is servicing the same de-energized 480V feeder. How should lockout be handled?
a.Only the foreman needs to apply a lock
b.One shared lock is hung on a hook by the panel
c.The first person in applies the lock and the last person out removes it for everyone
d.Each authorized worker applies their own individual lock so the energy cannot be restored while anyone is exposed
Explanation
In group lockout, every exposed worker applies their own lock (often on a lockbox or hasp) so power stays off until the last person removes their lock. A single foreman lock or shared lock leaves others exposed if someone else re-energizes. Relying on the first-in/last-out person defeats individual protection.
Law Reference: Cal/OSHA Title 8 §3314Practice all 521 questions free — no signup required.
Related questions on this topic
- 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?
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