SafetyQuestion 473 of 521
Immediately after you open a disconnect switch, all the conductors on the load side should be treated as:
a.Safe to handle right away
b.Safe as soon as the indicator light goes off
c.Safe after waiting about five seconds
d.Energized and dangerous until you have tested and verified the absence of voltage
Explanation
Conductors must be treated as energized until a rated tester confirms the absence of voltage; a disconnect could be mislabeled, back-fed, or have stored energy. Assuming safety from an open switch, an indicator light, or a short wait has caused many electrocutions.
Law Reference: Cal/OSHA Title 8 §2320.1Practice all 521 questions free — no signup required.
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