According to wiring standards, how must metallic enclosures be handled?

Metallic enclosures must be properly grounded to ensure safety and compliance with wiring standards. Grounding provides a path for electrical current to safely dissipate in the event of a fault or short circuit. This is crucial for preventing electric shock hazards and minimizing the risk of fire due to electrical surges.

When metallic enclosures are not grounded, there's a chance of accumulating electrical charge, which can lead to dangerous situations where anyone touching the enclosure may receive an electric shock. Moreover, properly grounded enclosures help in safeguarding sensitive equipment inside from electrical interference and surges.

While painting for protection may help against corrosion and minimizing deterioration, it does not substitute for proper grounding. Similarly, while metallic enclosures can be used in various applications, they should not be solely limited to low voltage applications nor should they be avoided in wet locations without consideration given to appropriate sealing and grounding measures. Therefore, understanding and adhering to grounding requirements is imperative for maintaining safety in electrical installations.