# Question: What Amp Breaker For Water Heater?

## What size breaker do I need for a 40 gallon water heater?

A 40-gallon water heater should have an average 4500 Watt capacity and 240 V emf. Thus, a 25 or 30A breaker is sufficient for a 40-gallon breaker. However, for your safety, we recommend getting a 30A breaker.

## Can I use a 40 amp breaker for 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.

## Can you use a 50 amp breaker for a water heater?

In an electric circuit of 240 volts, 4500 watts is equivalent to 18.75 amps. This means that a 50 gallon water heater will not flip a circuit breaker of 20 amps, but it will force the circuit breaker to operate at 95% of its capacity, something most circuit breakers are not qualified to do.

You might be interested:  Often asked: How Much Power Does An Electric Water Heater Use?

## 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 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].”

## 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.

## What size breaker do I need for 4500 watts?

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

## What size breaker do I need for a 120v water 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.

## How many amps does a gas water heater use?

How Many Amps Does a Gas Water Heater Use? A gas water heater with a tank will require 30 amps of electricity, which usually does not require any kind of modifications to the home’s electrical system–even for older homes with only a total 100- or 200-amp service.

You might be interested:  Quick Answer: How Many Watts Is A Heater?

## How many amps does a 60 gallon water heater use?

Requires 240 volt electricity (a 30 amp breaker, with 10 gauge wire from the panel). Also available in a BC compliant model. Performance 60 Gal Electric Water Heater with 6 Year Warranty is rated 3.5 out of 5 by 6.

## What size breaker do I need for 240 volts?

120 Volt heaters require 1-Pole circuit breakers; 240 Volt heaters need 2-Pole breakers.

## How many amps is 5500 watts at 240 volts?

In case of 120 or 240 volts, a 5500 watt generator provides 45 Amps. The small window AC unit can be powered by a 5500 watt generator. There is a fridge with a freezer.

## How many amps does a 30 gallon electric water heater use?

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.

## Can you use 12 2 wire for a water heater?

A 12-2 w/ground should be enough, although I would use a 10/2 for future “upgradability”. 10/2 is the standard cable for a water heater. Connect white to red. 12/2 would be insufficient for almost all water heaters.