Patent ID: 7236352

Claim:
An arc resistant switchgear assembly comprising a front wall, a rear wall, a bottom surface, an upper surface, a first side wall, and a second side wall opposed to said first side wall and spaced a first distance from said first side wall, each of said first and second side walls having an upper portion and a lower portion, each of said first and second side walls having an inner and an outer surface, at least the lower portion of one side wall having a blow-off panel detachably secured thereto by fastening means, said panel being detachably secured to said outer surface of said one side wall, said assembly including a blow-off panel support shelf, said shelf being secured to said outer surface of said one side wall below and adjacent to said blow-off panel, said blow-off panel in contacting relationship with said blow-off panel support shelf, said assembly having a vertical plenum formed directly adjacent said one side wall, said outer surface of said one side wall defining the inner side wall of said vertical plenum, said vertical plenum extending upwardly and connecting to a horizontal collector plenum, said vertical plenum being of a width less than said first distance.