Readers ask: What Size Breaker For A Water Heater?

What size breaker do I need for my water heater?

Multiply the value for current by 125 percent to determine the size of the breaker you need for the heater. A 1500-watt heater on a 120-volt circuit thus needs a breaker of 15.6 amps. Because a 15-amp breaker would be too small, you need a breaker with the next highest rating, which is 20 amps.

What size breaker do I need for a 4500w water heater?

30 Amp dual pole breaker and 10 Gage wire size are required for 4500 watt elements.

Can I use a 40 amp breaker for a water heater?

You cannot put a 40A breaker on #10 wire. If you are sure there is (at least) #8 wire all the way from the breaker to the water heater, you can just replace the 30A breaker with a 40A breaker, but if and only if you have verified the size of the wire throughout the entire circuit.

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What size breaker do I need for a 30 gallon water heater?

The branch circuit needs to be calculated at 125% of the rated ampacity for this type of water heater to be considered a continuous load. In order to work on a 20 Amp OCPD, you will need a 25 or 30 Amp circuit.

What size breaker do I need for a 50 gallon water heater?

The standard for water heater circuits is #10, two conductors with ground (10/2) and a 30 amp circuit breaker for a water heater. If you are running cable anyway, just run #10 and replace the breaker so it’s done right, once and for all.

What is the downside of an electric tankless water heater?

Tankless water heaters produce an endless supply of hot water, take up less space, have a lower risk of leaking, are safer, and have a significantly longer lifespan on average. The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters.

What size breaker does a 40 gallon water heater need?

Generally, for a 40-gallon electric heater, you’d need a 30A double pole breaker. Those should be paired with 10-2 non-metallic cables. However, make sure that you have a 240 volt dedicated circuit for your water heater.

How many amps does a 40 gallon water heater draw?

generally around 20 to 25 amps. There are two 1500 Watt elements. Depending on the distance from your breaker panel, generally you run a 30 amp double pole breaker for it. In the USA a 40g electric water heater usually has two 4,500 watt heating elements which run alternately, not simultaneously.

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What wire do I use for a 30 amp breaker?

“Twelve-gauge wire is good for 20 amps, 10-gauge wire is good for 30 amps, 8-gauge is good for 40 amps, and 6-gauge is good for 55 amps,” and “The circuit breaker or fuse is always sized to protect the conductor [wire].”

What size breaker do I need for a 220v water heater?

Electric water heaters use anything between 220 to 250 volts of alternating current. You’ll need a double circuit breaker that is correctly rated for the power draw of the water heater. We’re looking at between 20 Amp and 30 Amp for most electric water heaters.

What size breaker do I need for a 240-volt water heater?

A 240-volt dedicated circuit is needed for electric water heaters to work. A 30-amp double-pole breaker and 10-2 non-metallic cable are included in the circuit wiring.

How many amps does a 28 gallon water heater use?

The amperage is vital to ensure you do not overload your current home’s electrical system. 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).

How many amps does a 80 gallon water heater pull?

This should be checked out first. A water heater will only draw depending on the wattage of the element(s). So your WH has 2 – 4500 watt elements. When only one runs it is drawing about 22 amps (208 is nominal voltage which is what you have in your building) 4500/208= 21.6 amps.

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