This is a post by Kassie Stumo on the EAC Site.
PTC has a Creo Parametric Extension called the Piping and Cabling Creo Extension (PCX) that allows engineers and designers to create piping and cabling systems easily throughout the design process. You can work in a 2D schematic or 3D modeling environment to automate the creation of manufacturing documentation.
Starting with a 2D schematic, designers can quickly review wiring routes and connections to avoid errors. If a new wire is needed, this can easily be added in a 2D environment by selecting from a library of standards and creating the connection.