High voltage cable testing method

A method of testing a cabling system is disclosed. The method may include discharging an input filter capacitor associated with an accessory component, charging an accessory bus capacitor to a desired voltage level, and connecting the accessory bus capacitor to the input filter capacitor. The method may also include continuously monitoring a voltage waveform associated with the accessory bus capacitor. The method may further include determining a difference between the voltage waveform and a nominal voltage profile, and detecting a fault if the difference is greater than a threshold value.