Part of maintaining switchgear is ensuring your protective devices operate in the right sequence. But how often must you verify that the settings and sizes are correct? Any time you have a change on the utility system or to your own system, you must confirm the short circuit withstand and interrupting ratings of your equipment are still adequate. A short-circuit study determines the magnitudes of available short-circuit current at each of your switchgear locations. A proper study will identify any switchgear that available short-circuit current would overstress.