At the beginning of the design process we create the basic structure of the installation. This means setting up the distribution circuits, and final circuits downstream from them. When a circuit is added to the installation, the designer sets the type of the conductor, its installation method and its length. For final circuits, the user need specify the type of circuit, along with all of its load parameters. These parameters include the kind, number of points, watts per point or design current, power factor, third harmonic percentage and any diversity factor.