Final answer:
The main reason for installing system grounding in irrigated areas is that wet soils are better conductors, ensuring safety by providing a better path to ground in the event of insulation failure or electrical leakage.
Step-by-step explanation:
The main reason for installing system grounding in irrigated areas is that wet soils are more conductive than dry soils. This increased conductivity provides a better path to earth ground, which is essential for electrical safety, particularly for preventing and mitigating the effects of lightning strikes and other electrical leakages. The grounding system is designed to ensure that in case of insulation failure, the electrical current is safely directed into the ground instead of causing a potential electrical shock.
Moreover, appropriate grounding contributes to the functionality of overcurrent protection devices like circuit breakers. When a ground fault occurs, such as when live/hot wiring comes into contact with the appliance case, a properly installed grounding system will enable the breaker to trip, thus preventing potential injury and forcing the repair of the compromised system.