Why is it important to maintain low resistance in grounding systems?

Maintaining low resistance in grounding systems is crucial primarily to ensure safe fault current paths. In the event of a fault, such as a short circuit, a low-resistance ground allows for a quicker and more effective dissipation of fault currents. This minimizes the risk of electrical shock to individuals and reduces the likelihood of fire hazards due to overheating of wiring or equipment. A grounding system with high resistance could allow dangerous levels of voltage to build up, posing serious safety risks.

While other options touch on related concepts, they do not address the core purpose of grounding in terms of safety and effective current management during fault conditions. Higher electrical usage, infrequent inspections, or radio signal interference are less relevant when discussing the fundamental safety function of grounding systems.