Which of the following is NOT a typical indicator of a ground fault?

A ground fault typically occurs when there is an unintended path between the source of current and the grounded surface, which can lead to a range of observable indicators. The correct answer points to a condition that is not associated with a ground fault—in this case, electrical devices working more efficiently.

In scenarios involving ground faults, it is common to experience a sudden loss of power to the device, unusual noises from electrical outlets, or the tripping of circuit breakers. These indicators suggest that there is an abnormal condition affecting the electrical system, often leading to a malfunction or a short circuit which compromises safety.

However, the notion of electrical devices working more efficiently contradicts the signs of a ground fault. Instead of enhanced efficiency, one would expect erratic performance or outright failure due to the faulty condition, making this choice distinct from the others that represent typical ground fault symptoms.