What is the result of excessively long grounding cables being installed?

The installation of excessively long grounding cables leads to higher cable resistance. As the length of the cable increases, the resistance along the cable also increases due to the inherent properties of the conductive material used. This higher resistance can adversely affect the performance of the grounding system, compromising its efficiency in dissipating fault currents or lightning strikes.

Additionally, increased resistance can lead to higher voltage drops across the cable during fault conditions, which can impede the grounding system's ability to effectively protect both equipment and personnel. Grounding systems are designed to provide a low-resistance path to ground, and having longer cables contradicts this purpose. The integrity and effectiveness of the grounding system are crucial in maintaining safety, equipment integrity, and optimal operational conditions in substations.