The Magnum ADK-14 is rated at 240 Volts, 12 kilowatts at 54 Amps at Max. This heater uses a two pole, 60 Amp Circuit Breaker and 6/2 gauge wire. Consult and electrician to keep to code. We recommend professional installation with any tankless water heater. This unit can be used in warmer climates in homes and condos for up to whole house water heating. The temperature rise chart illustrates the flow rates and temperature rise which can be achieved with the different ADK Models. The chart is based on a 240 volt input voltage and maximum flow rates are listed for various incoming water temperature levels. If your home or business has less than 240 volt power (208v), your flow rate and heat rise will be lower. Temperature of your incoming water change throughout the year. When planning the final replacement of your old tank water heater then be sure to find the cold incoming water in the winter when calculating your temperature rise. Click on the Heat Rise Chart for proper sizing or call us at 877-229-1191. CSA 22.2 approved for use in Canada, ETL #834 listed and UL #499 Compliant for your safe use in the USA
