Sure, but the breaker serving the subpanel will be large and fairly expensive. But that’s a fine way to run a single 2/0Al cable instead of three #8s. Price the cable both ways. Is your panel full?
How many breakers does a tankless water heater need?
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 |
Does tankless water heater need a dedicated circuit?
Gas tankless water heaters use just a tiny amount of amperage to ignite the flame. Unless the manufacturer requires it, there is no need for a dedicated circuit.
Can you use a tankless water heater with a 200 amp service?
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 tankless 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.
Do you need a GFCI breaker for a tankless water heater?
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.
What type of outlet is needed for tankless water heater?
An indoor, electric tankless water heater does not need to be vented to the outside. It does require 240-volt power. It may be plugged into a 240-volt outlet or directly wired to a service panel.
What size panel do I need for a tankless water heater?
If you don’t know how to size your main breaker panel, you can calculate 125% of the heater’s continuous load first. If your heating device needs this amp size, the best panelboard is the largest, which is 200-amps.
Why is my tankless water heater tripping the breaker?
It could be a loose or bad wire, a bad connection in the electrical panel, or a worn-out breaker. Check the wiring on the line for broken or loose wires. If the breaker trips and there are no problems on the line, then you’ll need to replace the breaker.
What size breaker do I need for a Rheem tankless water heater?
Save energy and costs with this Rheem Performance Tankless Electric Water Heater. This compact heater can be installed under a cabinet or sink with no venting required. It uses a 3 x 49 amp double pole breaker to give you continuous, instant hot water when needed. This heater requires professional installation.
Is a tankless water heater considered a continuous load?
Electrical Service:
The Heatworks MODEL 1 tankless water heater is considered a non- continuous heating appliance according to the Definitions in the National Electric Code. An appliance load that is not continuous for 3 hours or more is considered non-continuous.
How many amps does a Rinnai tankless water heater use?
three amps
What are the power supply requirements for a Rinnai Tankless Water Heater? Rinnai Tankless Water Heaters require 120 volts AC, 60 Hz and less than three amps.
Can my house handle an electric tankless water heater?
The reason being is that in most homes the existing electrical system will not support a tankless water heater that is the right size for the home. In a 2.5 bathroom home with a family of four, you are typically going to need at least a 24 KW heater.
How close can a tankless water heater be to an electrical panel?
The only code requirements I’ve found regarding clearances around an electrical panel are allowing at least a 30″ working space (side to side).
Can electric panel be next to water heater?
Based on the letter of the code it is perfectly feasible to have a water heater or sink immediately next to a breaker panel. Contrary to popular belief, an electrical panel, or most other electrical equipment, will not explode and blow up the house if contact with water is made.
