What safety feature should be included in any electrical equipment used in wet locations?

For electrical equipment used in wet locations, increased grounding is essential because it provides a critical safety measure to prevent electrical shock and equipment damage. Proper grounding ensures that any stray currents or faults are directed safely into the ground, reducing the risk of electric shock to users who might come into contact with the equipment.

In wet environments, moisture can create paths for electrical currents that could lead to hazardous situations. Enhanced grounding helps mitigate these risks by ensuring that electrical faults do not pose a danger. Grounding also helps to stabilize voltage levels during normal operation, contributing to the overall safety and reliability of the equipment.

While other safety features like waterproof casing, high humidity resistance, and overload protection are also important and beneficial in wet locations, they do not specifically address the fundamental safety concern of preventing electrical shock in the event of a fault. Thus, increased grounding stands out as a cornerstone safety feature mandatory for electrical equipment used in such environments.