How many amps do I need for a tankless water heater?
A tankless electric water heater needs a 120-amp breaker. A gas water heater with a tank requires 30 amps, while a tankless gas water heater requires a 120-amp breaker.
How many amps does a tankless electric water heater use?
One whole-house tankless water heater has four 7,000-watt elements, for a total electrical load of 28,000 watts. This load re- quires wire and a circuit breaker that will handle at least 120 amps, at a cost many times that of electrical service to a conventional tank water heater.
How many amps does a hot water heater use?
The standard amperage for an electric water heater is 18.8 Amps with 240Volts, 4500 Watt. A gas water heater in average uses less than 12 Amps with 115Volts (US and Canada).
What size breaker do I need for tankless?
Electrical Requirements
| Model | Recommended Breaker | Recommended Household Electric Service |
|---|---|---|
| ECO 11 | 1 x 60 Amps DP | 125 Amps |
| ECO 8 | 1 x 40 Amps DP | 100 Amps |
| POU 6 | 1 x 30 Amps | 100 Amps |
| POU 3.5 | 1 x 30 Amps | 100 Amps |
Is 200 amp service enough for tankless water heater?
A 200-amp service allows operation of multiple appliances at once, while a 60-amp service won’t provide enough power to run an electric hot water heater, air conditioner and hair dryer simultaneously. The EcoSmart Eco-18 model requires two 40-amp breakers for installation and has a 75-amp draw.
How many amps does a Rheem tankless water heater use?
240V General Purpose Electric Tankless Water Heater, 8,000 W Watts, 33 A Amps – Water Heaters.
Does a tankless water heater need a dedicated circuit?
The outlet needs to be on a dedicated circuit and should not exceed 70% capacity in terms of power consumption or else the breaker will trip.
Does a tankless water heater need a GFCI breaker?
Most tankless water heaters are placed outdoors. The attachment plug serves as the disconnect and the receptacle shall be protected by GFCI. If there’s a new circuit that serves only exterior receptacles, no AFCI is required. If the receptacle is added to a circuit, there’s most likely a requirement for AFCI.
