Which verification step must be performed to confirm the disconnecting device is in the disconnected position?

Which verification step must be performed to confirm the disconnecting device is in the disconnected position?

• A. Visually verify that the disconnecting device is fully open in the disconnected position
• B. Stop running equipment again
• C. Apply a tagout device
• D. Ground the conductors

Answer: (A)

The key idea is to ensure complete energy isolation by confirming that the disconnecting device is physically open. Visually verifying that the device is fully open in the disconnected position provides direct evidence that the electrical contacts are separated and no current can flow to the equipment. This hands-on check protects you from hidden energization caused by a stuck contact or a device that appears off but isn’t actually open. After this visual confirmation, you would typically apply a lockout device to prevent re-energizing and tag the equipment to communicate the status, but those steps support safety rather than prove that the disconnect is actually in the open position. Grounding the conductors or stopping the equipment again doesn’t fulfill the specific need to verify the disconnect is in the disengaged state.

The key idea is to ensure complete energy isolation by confirming that the disconnecting device is physically open. Visually verifying that the device is fully open in the disconnected position provides direct evidence that the electrical contacts are separated and no current can flow to the equipment. This hands-on check protects you from hidden energization caused by a stuck contact or a device that appears off but isn’t actually open. After this visual confirmation, you would typically apply a lockout device to prevent re-energizing and tag the equipment to communicate the status, but those steps support safety rather than prove that the disconnect is actually in the open position. Grounding the conductors or stopping the equipment again doesn’t fulfill the specific need to verify the disconnect is in the disengaged state.