In feeder calculations, why is it necessary to have an understanding of system grounding?

Having an understanding of system grounding in feeder calculations is essential primarily for safety and functionality during fault conditions. Grounding systems are critical as they provide a low-resistance path for fault currents to flow safely to the ground, minimizing the risk of electric shock to personnel and damage to equipment. In the event of an electrical fault, such as a short circuit, a well-designed grounding system helps to ensure that protective devices like circuit breakers operate effectively. This minimizes potential hazards and ensures that equipment can function as intended without causing undue risk to people or property. Thus, safety and proper operation during faults underscore the importance of understanding grounding in feeder calculations.