I have a 3 and a 4 switches version and used 250 volt switches because I needed to switch 230 volt and 12 volt. For extra precaution i've used heat shrink tubes and extra dividers between the switches. The safety flips have been added simply because they look cool :-)
I've used a red safety flip on purpose for the emergency connection between the starter battery (of course with the right circuits between them) and the on-board battery of the camper.
The author remixed this model.
I needed extra switches installed and decided to use an existing design from “mmacin and adjust it my own needs. ”mmacin" did some excellent work on the contours!