The Wiring
From the outset, the layout was intended to be run using DCC. Therefore, 2 BUS wires were run the length of the layout, with the Black wire to the front and Red to the rear of the layout. Standard American 2 Pin Mains plugs are used to join the BUS wires between boards. From the BUS wires, feeds were made to all sections of the layout, with all switches isolated at the crossing end.
There are no section switches, as this is not required for DCC, so the entire layout is live all the time. However, even though this is the case, the layout can be run on DC, but with only one locomotive on the layout. DCC control is currently provided by my fathers NCE Pro Cab unit.