Which of the following actions should be avoided when working with high voltage systems?

Using damaged equipment is crucial to avoid when working with high voltage systems due to the significant risks it poses. Damaged equipment can lead to electrical malfunctions, failures, or even unsafe conditions such as short circuits or unexpected electrical discharges. This can compromise both the safety of the technician and the integrity of the electrical system.

In contrast, wearing insulated gloves is a protective measure that reduces the risk of electrical shock. Ensuring proper grounding is essential for safety, as it provides a path for excess electricity to safely dissipate, minimizing the risk of shock. Maintaining clear communication within the team is vital for ensuring that everyone is aware of the work being done, potential hazards, and any changes in the environment or situation. All these actions contribute to a safer working environment in high voltage scenarios, making the use of damaged equipment the only course of action that should be firmly avoided.