I saw a house that had 30 amp 120 volt wires coming from the pole to the house (only 2 wires). The neutral wire was connected to one, and the red and black hots were connected to the other. (may i mention that they used electrical tape with western union splices.) The service wire then went to a meter then to his breaker box. The man living ther wired it himself without a building permit or inspection. he said he was shocked a few times. He's lucky to be alive. Oh yes, he said he also used speaker wire in a few places because he ran out of romex.
