What precaution must be taken when troubleshooting a short to ground?

When troubleshooting a short to ground, disconnecting both ends of the circuit under inspection is crucial. This precaution helps to ensure that the section of the circuit being examined is completely isolated from potential power sources. By disconnecting both ends, you eliminate the risk of inadvertently causing further shorts or electrical hazards during the troubleshooting process. It also allows for accurate testing and diagnostics of the circuit without interference from voltages or currents generated by other components.

This practice is fundamental in electrical troubleshooting as it promotes safety and helps in identifying the source of the short more effectively. Other choices may address different aspects of electrical safety and diagnostics but do not prioritize the complete isolation required when dealing specifically with a short to ground scenario.