Atmor AT-900-04 Tankless Water Heater Electric, 3.8kW, White Designed for hand washing SINGLE sinks for Southern states Recommended flow rate 0.56 GPM (Gallons per Minute) = 45F temperature rise. Slower flow rate = higher temperature rise. Requires a direct connection to a 20 Amp single-phase, double pole breaker. Required wire size: 12 AWG. 240 volts. Instant and endless hot water on demand without the wait or worry of ever running out Includes a Pressure Relief Device (PRD). Save up to 50 percent on your water heating costs