So I'm constructing a dust extractor system for my workshop, and I need to figure out a circuit. I have 3D Printed a connector that connects two PVC Pipes, and has a hole for a wooden slab. I can insert the wooden slab (which has a large hole in it) to control whether or not the the pipe is open or closed. I'm thinking of creating a circuit that uses a limit switch and a relay to control the power to the vacuum. I live in Australia and my volts and amps from an outlet is 230V and I believe 10 amps. Which limit switches and relays should I use to control my vacuum. And is there any suggestions to improve this circuit.