Local area lamp post typical electricity installation details that includes a detailed view of base plate or 1, see note 1, conico reducer 3 1/2 "- 1 1/4", mercury steam luminaire vmvj-175 gp / 240v, mercury vapor bulb 175 w, tube o 3 ?? "sch 40, 3/8 "thickness plate, condulete crouse hinds cat. no. guad 36, or 1 "or similar and much more of lamp details.