Which of the following is not a reason for grounding electrical systems?

Grounding electrical systems serves several critical purposes, primarily aimed at safety and stability. Preventing electrical shock is one of the most important reasons for grounding. By creating a low-resistance path to the ground, grounding allows fault currents to flow safely away, reducing the risk of an individual receiving a shock from electric leakage.

Maintaining system stability is also crucial, as a grounded system can help ensure that voltage levels remain consistent and within prescribed limits, contributing to the overall reliability of the electrical network. Protecting equipment from damage is another vital function of grounding; it helps to divert excess voltage caused by surges or lightning strikes away from sensitive equipment, thereby preventing failure or destruction.

The reason for grounding is not to limit potential between ungrounded conductors. In fact, ungrounded conductors can have a significant difference in potential, and grounding helps manage and stabilize the system rather than directly limiting the range of potential differences between these conductors. Grounding focuses more on safety, equipment protection, and system performance than on controlling the differences in voltage between ungrounded conductors.