When removing capacitors rated over 600 volts, how long should you wait before grounding and shorting out terminals?

When dealing with capacitors rated over 600 volts, it is crucial to allow time for any potential stored energy to dissipate. Capacitors can remain charged long after they have been disconnected from the circuit, presenting a significant safety hazard if not properly handled.

Waiting for a period of five minutes before grounding and shorting out the terminals is a widely accepted safety practice. This duration allows more than enough time for most capacitors to discharge, but particularly large or high-voltage capacitors may require even longer in some instances for complete safety.

This practice helps to ensure that the risk of electric shock is minimized, protecting both the technician and the integrity of the equipment being worked on. Proper precautions, including personal protective equipment and the use of discharge tools, are also vital when performing these tasks. Adhering to this five-minute waiting period is a key part of safe work practices in the field.