Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, copper and flat copper conductor bar systems comprising electrical multi-conductors, uninterrupted electrical conductors, pre-installed copper electrical conductor bars and electrical connecting terminals, and including wheel-guided collector trolleys; electric connection boxes, cable junctions for electric cable, junction boxes, electrical controllers, and connectors for wires and cables; electric cables; electric installation equipment, namely, flat and round electric cables, coaxial cables, electric cables, electric wires and electric sockets, electrical outlets and plugs, and protective sheaths for electric and fiber optic cables; reels for electric wires and cables, namely, cable reels, electric hose reels and spring driven reels; electric drag chains for cables; electrical connections for electric wires and cables; coaxial cables; instruments and devices for measuring the transmission of power and data through cables, wires, steel wires, lines, and pipes; electric installations for flexible power supply and the remote control of industrial operations, namely, automated systems and cranes, automated storage/retrieval systems, assembly lines, blast furnace applications, concrete factories, and production machines in hazardous environments; electric friction contacts; electric junction box housings; junction boxes; electric connections, namely, connecting terminals; bus bars for electrical power distribution; sheaths for electric cables; electrical outlets and plugs