Visio shapes and symbols for you to create drawings of domestic and light industrial electrical installations. All the shapes have connection points at suitable Locations. Use the standard Visio connector tool connector tool image to join the shapes. Some shapes have a right-click menu e.g. many of the switches symbols have a menu to select N/O (normally open) or N/C (normally closed) as appropriate. All shapes have custom properties for manufacturer's data, part numbers etc so that you can create parts lists and inventories using the standard Visio report tools. You can use the Transformer kit shapes to create your own transformers by combining and grouping the kit parts to suit your own requirements. You can also add appropriate winding symbols to indicate winding phases.