What could be the consequence of exceeding the maximum resistance limit for an electrical ground?

Exceeding the maximum resistance limit for an electrical ground can significantly compromise the safety and functionality of the electrical system. A high resistance in the grounding system limits the flow of fault current, which is essential for the operation of protective devices like circuit breakers and fuses. If the ground resistance is too high, in the event of a fault, the fault current may not adequately trigger these protective devices, leading to potential over-voltages and electrical arcing. This scenario increases the risk of electrical shock to personnel working near live equipment and may also cause malfunction or failure of electrical components. Therefore, maintaining the grounding resistance within specified limits is crucial for preventing dangerous conditions and ensuring the overall reliability and safety of the electrical system.