Abstract: A cross connect panel includes a base supply section and a plurality of load-connector modules mounted transverse the base supply section. The base supply section comprises a plurality of bus bars arranged side-by-side in spaced, parallel, mutually insulated relationship within a channel formed by approximately parallel side support members. Each of the transverse modules includes one or more slider assemblies adapted to interconnect, through electrical contacts, a bus bar with an external load. The length of the base section is determined solely by the number of transverse modules desired in the system and the length of the transverse modules is determined by the number of supply bus bars included in the system. The slider assemblies are self-contained, and when mounted, are captive in vertical, horizontal and lateral directions. Moreover, these assemblies are capable of effecting an "off" mode at any transverse location with respect to the bus bars.

Abstract: In a theater lighting system that regulates the luminescence of incandescent lamps, a main power unit is constructed of unitized components which include a chassis, main power apparatus drawers, electronic control circuit boards, a power bus unit and equipment rack. The drawers and boards are removably located in separate sections of the equipment cabinet remote from each other. The operator's console contains a plurality of sources of control signals which are supplied to the equipment cabinet to control the output power of main power apparatus. Main power apparatus of different power ratings are interchangably usable in each such system.