Electrical current needs a path in order to work. A neutral provides a path in 120 volt circuits. Two hots, 240 volts, provide a path because the voltage/current alternates from positive to negative. The current flows toward the load during the positive cycle and flows away from the load during the negative cycle.

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Originally posted by Boscodog:
Hi guys! I'm not an electrician. I'm just a Joe homeowner who has developed an interest in wiring and I've got a question that I hope someone will help me with. All of the 'how to' books that I've read so far just state that a 240V single phase branch circuit doesn't use a neutral. Well, why is that? How does the current return? Thanks for your patience.