 To make the ground fault current easier to detect, the grounding resistor of the system may be switched between two values so that the fault current pulses.The prospective fault current of larger batteries, such as deep-cycle batteries used in stand-alone power systems, is often given by the manufacturer.In Australia, when this information is not given, the prospective fault current in amperes "should be considered to be 6 times the nominal battery capacity at the "C" A·h rate," according to AS 4086 part 2 (Appendix H).