Which of the following is a common cause of ground faults?

A common cause of ground faults is deteriorated insulation. When insulation on electrical wiring breaks down or becomes damaged, it can allow electrical current to escape from the intended path. This leakage of current often flows to the ground, creating a ground fault. The condition of insulation is critical in ensuring that electrical circuits operate safely and effectively. As insulation deteriorates, it can expose conductors to moisture, physical damage, or other environmental factors that may increase the likelihood of a ground fault occurring.

Understanding this concept is essential for electrical safety and maintenance, as timely identification and replacement of worn or degraded insulation can significantly reduce the risk of electrical faults and potential hazards such as electrical shocks or fire.