Why is proper grounding essential for FC electrical equipment?

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Proper grounding provides a safe reference point for all electrical equipment and exposed metal parts, so they stay at or near earth potential. This reduces the risk of electric shock if someone touches a live or faulted surface, because the potential difference between the person and the surroundings is minimized.

In the event of a fault, grounding gives fault current a low-impedance path to earth. That quick return path allows protective devices—fuses or circuit breakers—to detect the abnormal current and trip fast, clearing the fault before damage or harm occurs.

Grounding also helps protect equipment from damage. By keeping voltages within intended levels and directing stray or surge currents away from sensitive components, grounding reduces overvoltages and electrical noise, helping insulation, connectors, and control circuits survive switching events and transient disturbances.

For these reasons, grounding is a safety and equipment-protection measure. It is not intended to increase power use, nor does it influence screen brightness, and it clearly has a significant safety impact.