A wiring assembly for a building includes an electrical power supply backbone, a first end thereof being adapted to connect directly to an incoming mains power supply at a switch board of the building, the assembly further comprising a plurality of sockets which are electrically connected to the backbone at spaced apart locations along the length thereof, wherein in use, the sockets may be arranged to be located at spaced apart locations through a building for convenient connection thereto. A related method for wiring a building using the wiring assembly is also disclosed.