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.

## Subsequently, can I use a 40 amp breaker for water heater?

In general, **NO**. Doing so is very dangerous and could start a fire! 10 gauge wire requires at most a 30A breaker, whereas 8 gauge requires at most a 40A breaker.

**can power all 4500watt water heaters regardless of**gallon size.

## Also to know is, does a water heater have its own breaker?

Electrical Usage

Any hot water heater, gas or electric, that has an electrical connection **requires a breaker**. … If this is the case, it is wired to its own circuit breaker in accordance with the National Electrical Code, article 220-30 for new construction or 220-31 for existing structures.

## Does Square D make a 25 amp breaker?

Square D QO 25 Amp **Single**-Pole Circuit Breaker-QO125CP – The Home Depot.

## How many amps does a 40 gallon water heater use?

An average 40-gallon electric water heater runs at 240 volts and a wattage of 2500 W. Hence, calculating the amperage 2500/240, we can deduce the amperage is **18.75 A**.

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

## How many amps equals 4500 watts?

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

In case of 120 or 240 volts, a 5500 watt generator provides **45 Amps**.

## What amp breaker is needed for a hot water heater?

## What size breaker do I need for a 240 volt 4500 watt water heater?

## What size breaker do I need for a 240 volt 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 wire is used for hot water heater?

It’s a good idea to wire a hot water heater with wire that’s larger than the current requirement. A 20-amp hot water heater requires **12-gauge wire**, a 25-amp hot water heater requires 10-gauge wire, and a 30- to 40-amp hot water heater requires 8-gauge wire.

## Will a 12 2 wire carry 30 amps?

If you look in the code book, 12 AWG wire **is legal to 30 amps** if you can run it at 90 degrees C.