What action is advised when switches are close together in high-voltage applications?

In high-voltage applications, the presence of switches in close proximity creates a risk of electrical arcing or unintended interactions between devices. To mitigate these risks, implementing secure barriers is advised. Barriers help to isolate switches from each other physically, reducing the chances of accidental contact or electrical shorts, and therefore enhance safety and reliability.

While other actions might have their own merits, such as providing adequate spacing to avoid electrical interference, secure barriers are specifically designed to protect against high-voltage hazards, making them the most effective choice in this scenario. This measure ensures enhanced protection for both the equipment and personnel working near high-voltage systems.