Built a test switch panel to test a large industrial system off line.
Designed and had fabricated by a local sheet metal fabricator a custom anclosure to hold the 144 switches, and designed PC boards to connect them in groups of 16.
Made custom cables to connect the banks of 16 switches to each field wiring connection in the control panels.
The Completed Panel
The legend overlay on the partial panel.
The switches in the panel.
The switches.