ATMOR 3 KW / 110-Volt 0.5 GPM Point Of Use Tankless Electric Instant Water Heater At 900 03

4.5 kW Mini Tankless Electric Water Heater for Better Performances 3 Steps to Choose Instant Hot Water at Your Need Can this tankless electric water heater be used for shower? No. It's suitable for a sink use. What amp breaker is required? The units require a 4.5kW at 120 volts. And it need to hardwired. How can I do when it cause E1 code? It means the product is oroverheated. You need to lower the setting temprature or replace the temperature measurer. 【Point of Use Hot Water】 The under sink water heater only heats the water when you need it and no waiting to preheat, saving up to 50% in energy consumption. 【Save Space】 With a mini size of 10.95W×2.52H×7.4D inch, mounted multi-angled in small spaces throughout the kitchens, wet bars, schools, hospitals, hair salons, and boats Inner water and electricity lines are designed to run separately to avoid leakage or harm from scale build-up 【Convenient Use】 Touch control panel and LED digital temperature display, easy to set your desired temp. The minimum water flow for activation just needs 0.26 GPM (Only for one sink). MUST HARD WIRED, NO PLUG. 【Note】 Make sure this unit is the right size for you: 4.5kW@120V, requiring 40A Circuit Breaker, 10AWG wire size and 1/2NPT water connection.