Existing Overdutied Equipment

This week’s question is a continuation of last week’s topic regarding overcurrent devices that do not have an adequate interrupting rating. When the calculated short circuit current is greater than the device’s short circuit interrupting or withstand rating, the device is often referred to as “overdutied”. (X/R can play a role too but we’ll save that for another day) This week’s question: Do you/client presently have any overdutied devices? Yes No Not Sure Rather Not Say READ MORE