Testing dead equipment: what is the purpose?

• A. To confirm equipment is energized.
• B. To ensure the equipment is not energized (is dead) regardless of voltage.
• C. To calibrate measurement devices.
• D. To test only for smell.

Answer: (B)

The purpose of testing dead equipment is to verify that no energy is present so you can work safely. This means confirming the circuit is truly de-energized, even if it might appear to be off or if there could be backfeed or stored energy. By proving there is zero voltage before touching or servicing the equipment, you reduce the risk of shock, arc flash, or accidental damage. This isn’t about energizing something, nor about calibrating instruments or smelling for anything; it’s about a reliable check that the equipment is dead as a prerequisite for safe work.