Printable hot tub wiring diagrams are available at Inter-Spas.com as of 2015. Inter-Spas offers printable Square-D and Siemans wiring diagrams in PDF format for its hot tub customers.
At Inter-Spas.com, owners can click Customer Care in the menu located at the top of the Web page, and then scroll down and select Wiring Diagrams in the drop-down menu. The Inter-Spas Portable Hot Tub Spa Wiring Diagrams Web page appears. Owners can then click on the appropriate diagram for their needs, and it opens in a new Web browser window. Owners can use their browser's Print function to print the diagram.