A system which automatically identifies a power system type, anomalies in the output of the power system, and/or likely errors of wiring and connection to the power system or a system under test connected to the power system is presented. A measurement processing module reduces measurement signals to characterized measurements and a rule base applies knowledge bases of standard power systems and wiring and connection errors to the processed measurements to determine the power system type, the most likely anomalies in the output of the power system, and/or the most likely wiring and/or connection errors.