Distribution Board Circuit Diagrams - Incoming Supply, Final Circuits and Cable Schedule (AutoCAD)

Two sheets from the circuit diagram set of a low-voltage distribution board in an industrial production building. The first sheet shows the incoming supply with the main switch, type 2 surge protection, a voltage monitoring relay and the busbar, together with the first fused outgoing ways. The second sheet continues the outgoing circuits, including residual current protection at 30 mA for the socket and personnel circuits and a sub-distribution feed. Each outgoing way carries its protective device rating and characteristic, the terminal numbering at the board, and a cable schedule underneath that lists cable number, type and cross-section and the outgoing designation of the area it serves. Drawn to IEC and EN symbols and dimensioned to the German VDE 0100 series, with equivalent selection rules applied where a project runs under NEC. Project identification has been removed.