Electrical objects are the components used to design electrical systems. Electrical objects include devices, panels, and wires. Objects, such as receptacles, switches, and telecommunications outlets, typically display symbolically and are not drawn to scale in plan view. Objects, such as lights, also display symbolically, but they are scaled to their actual envelope dimensions in plan view. This scaling lets you place lights to achieve the desired lighting density and also enables you to check for interferences between larger electrical components and surrounding systems.
You can then draw cable tray and conduit runs in order to form complete electrical networks.