What is a split-phase 120/240 V service, and how are the two hot legs arranged?

• A. A center-tapped transformer yields two hot legs that are in phase and 240 V apart.
• B. Two hot legs are in phase and provide 240 V between them.
• C. A center-tapped transformer provides a single 240 V hot leg and a neutral.
• D. A center-tapped transformer provides two 180 V hot legs that are out of phase but only 120 V apart.

Answer: (C)