Another means of communications which might be useful in locating a HIF is a customer billing meter which can be remotely interrogated. Following receipt of a HIF alarm, if the circuit is not tripped and no outage complaints have been received, it may be possible to locate the fault by selectively interrogating the meters along the circuit to determine which meters are energized. If the utility has a distribution automation system, the feeder sectionalizing points may be polled to determine if voltage is present.