Not done here. At most, available fault current at the service, mostly commercial and industrial, never seen it done at the residential level.So isn't this essential test gear for you guys? It is for a professional electrician here in the UK. Typical values can range from high hundreds of amps to low thousands in a domestic setting.
We use it in several modes - to determine the PSCC (perspective short circuit current) ie. Will a particular breaker trip on the instantaneous part of the curve if used on this circuit. Also to determine if that breaker has a suitable breaking capacity in order to safely clear such a short circuit fault. A PSCC test can also help identify bad/loose connections.
To determine EFLI (Earth fault loop impedance) - to determine that fault current that would flow if a bolted phase to earth fault should occur. Helps determine the type of earthing (grounding) in use and whether or not additional measures (like an RCD (GFCI) must be used). An EFLI test is done at every point of utilization to determine if the earth connection is present & effective.