Electrical system for interior space-dividing system

An electrical system for an interior space-dividing system which, in a preferred embodiment, constitutes an eight-wire, three-circuit system. The electrical system is prefabricated and includes elongate harnesses mounted within channels which extend interiorly or portable space-dividing members. Adjacent harnesses are electrically joined by flexible electrical jumpers which create pluglike connections with power blocks provided on the ends of adjacent harnesses. Receptacle units are removably connectable to at least one side of each power block, and have circuit-selecting capability to facilitate access to all three circuits from adjacent work areas. The receptacle unit includes at least two exteriorly accessible receptacles of conventional configuration associated with a front face of the receptacle unit housing, and the housing internally includes independent sets of three conductors each respectively associated with one of the receptacles and each set having independent circuit-selecting structure associated therewith so that each of the two receptacles associated with a single receptacle unit can be independently circuit selected.