What must be done regarding electricity to ensure safety?

To ensure safety when working with electricity, keeping two voltages separate from each other is crucial. This practice helps prevent electrical overloads, which can lead to short circuits, equipment damage, or even fires. When two systems with different voltages are connected or come into proximity without proper isolation, it increases the risk of arcing or unintended current flow, potentially leading to dangerous situations.

Maintaining separation between different voltages allows for better control over circuits, enhances the reliability of electrical systems, and protects both the equipment and personnel from electrical hazards. It creates a clear distinction in terms of operational standards and safety protocols that are necessary in both residential and commercial electrical work.