The way I wired the contactor for my cyclone is: both 220 hot wires go to the 2 connectors on the input side of the contactor, the output wires go to the motor, in your case the planer's motor. The ground wire feeds straight through. The trigger wires are the 120 volt wires. Think of these as the light bulb. Wire the neutral wire to one side, the hot wire goes through the switch, then to the other side. Flipping the switch completes the circuit, the contactor energizes, flowing the 220 current to the motor.
Note, I am NOT an electrician. This is only how I wired mine. It has worked well for almost 2 years now, and the shop is still standing. For diagrams, do a search in the internet for contactors. I think it was Dennis Peacock at SMC that had information on building a remote contactor for a cyclone and has some good diagrams. This is the same only a switch is used instead of a remote. Jim.
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