Patent ID: 8648274

Claim:
An arc resistant electrical enclosure comprising: an enclosure having exterior walls and partitioned electrical sections within the electrical enclosure, each section housing one of an electrical control area, a transformer area and a high voltage area; one or more independent self-enclosed flame arresting duct systems located within one or more of the partitioned electrical sections, each self-enclosed flame arresting duct system including an arc chute access leading into two or more adjacent partitioned pressure relief chambers; and an access in each of the adjacent partitioned pressure relief chambers leading into a next one of the two or more adjacent partitioned pressure relief chambers, each next access located in an opposite one of an upper and a lower portion of the partitioned pressure relief chamber forming an enclosed torturous mechanical maze to extinguish internal hot flames within the self-enclosed flame arresting duct system prior to expelling gasses through a flame arresting vent at the end of the flame arresting duct system into an external environment.