Atmor AT-900-06 Tankless Water Heater Electric, 6.5kW, White Designed for a single or double sink Recommended flow rate 1.05 gpm (gallons per minute). slower flow rate = higher temperature rise Requires a direct connection to a 30 amp single-phase, double pole breaker. Required wire size: 10 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).standard 1/2 in. NPT