Which of the following is a requirement of a good ground?

A good ground is critical for ensuring the safety and proper functioning of electrical systems. Its primary role is to provide a reliable path for fault currents to flow safely into the earth, thereby reducing the risk of electric shock and protecting equipment from damage.

A low resistance path to earth is essential because it allows for the quick dissipation of electrical current. When a fault occurs, such as a short circuit, a low resistance path ensures that the fault current flows quickly and effectively, allowing protective devices like circuit breakers to operate correctly and isolate the fault. This minimizes the duration that any equipment or personnel is exposed to potentially dangerous voltage levels.

In contrast, a high resistance path would hinder the flow of fault current, potentially leading to dangerous situations. Similarly, poor connections or connections made at improper points can lead to increased resistance and unreliable grounding, which can compromise the safety and performance of the electrical system. Thus, having a low resistance path to earth is vital for effective grounding.