Which type of power event is associated with improper grounding?

Improper grounding can lead to a specific type of power event known as line-to-ground faults. This occurs when there is unintended contact between a conductor and the ground or a grounded part of the system, often due to insulation failure or other issues that compromise the grounding system's integrity.

When a line-to-ground fault occurs, it can result in excessive current flowing through the ground path, which can be damaging to both equipment and the overall electrical system. This situation necessitates protective devices to clear the fault and prevent further damage, highlighting the importance of proper grounding practices to ensure safety and reliability in power systems.

The other options, while related to electrical phenomena, do not directly stem from grounding issues in the same manner. Transients and noise typically result from sudden changes in voltage or current and electromagnetic interference, respectively, whereas non-linear loads relate to devices that draw current in a non-linear pattern, causing distortion in the electrical system. Thus, they are not primarily associated with improper grounding.