1. A method of isolating a fault condition from many potential fault conditions comprising: generating a group of potential faults based on a plurality of measured parameters; selecting a first isolator from a plurality of isolators based on performance of the first isolator in differentiating between potential faults within the group of potential faults; redefining the group of potential faults to include fewer potential faults than the previous group of potential faults based on criteria applied by the first isolator; and reporting a fault condition responsive to the redefined group of potential faults including one potential fault.