So question, i have the new snap in wire boxes, What would happen if i wire it 1 2 3 insead of 3 2 1? Is each hole designed for only a certain ammount of current on the switch or do you think it would work just backwards number wise meaning on 1 would speed 3.. Hypothetically of course. I think it would work just be backwards.
It would just be labeled backwards. Each circuit has different a different number of turns of wire going to the motor thus the resisitance readings shown, the switch is just a selector and since this one has a capacitor to jump start the blades it shouldn't matter, but an older fan or motor might not start reliably unless it's turned to the highest setting first or spun up by hand.