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A ground/earth fault is a fault where part of the current returns back through a path other than the opposing hot or, more critically, neutral. A neutral/earth fault is dangerous because the circuit will continue to function normally, but the hot and neutral leg currents are imbalanced, and the chassis can become energized.
A fault is a fracture within some particular rocky mass within the earth's crust. Fault sizes can vary greatly, as some faults can be miles long. Earthquakes are caused by active faults, which are, faults along which the two sides of the fracture move with respect to each other.In short, an earthquake is caused by the sudden movement of the two sides of a fault with respect to another.arthquakes can also occur within plates, although plate-boundary earthquakes are much more common. Less than 10 percent of all earthquakes occur within plate interiors. As plates continue to move and plate boundaries change over geologic time, weakened boundary regions become part of the interiors of the plates.