Well, you're not going to be one of them. Adding a 240 volt circuit is as easy as adding a 120 volt circuit, actually it can be easier. In the tutorial, Installing a 240 Volt Circuit Breaker, I'll lead you step by step with detailed photos through the procedure for adding a 240 volt circuit and receptacle that uses 3 wires (2 hot and 1 ground).
Some 240 volt plugs are designed for 120/240 volts and those circuits and receptacles use 4 wires (2 hot, 1 neutral and 1 ground). This tutorial is for installing a straight 240 volt circuit and receptacle and it requires 3 wires (no neutral wire). But I talk about the difference between these circuit types and how the wiring process is similar for both. So take a read thought this tutorial, it's electrifying!