##### Asked by: Yarissa Mare

asked in category: General Last Updated: 30th June, 2020# How many amps does an electric hot water heater use?

**4500/240**= 18.75 amps, will work on a

**20 amp**OCPD but, 18.75*125% = 23.4 amps, requires a 25 or

**30 amp**circuit.

Likewise, people ask, what size breaker does an electric water heater need?

**Electric water heaters require** a 240-volt dedicated circuit, which serves only the **water heater** and no other appliances or devices. The circuit wiring typically includes a 30-amp double-pole **breaker** and 10-2 non-metallic (NM) or MC cable.

Subsequently, question is, what size breaker do I need for a 40 gallon electric water heater? Your average residential 30 or **40 gallon water heater** is 4500 watts and usually goes on a 30 A **breaker**.

Also to know is, how many amps is a 50 gallon electric water heater?

*IF* the elements in that **50 gallon water heater** were only 3500 watts, then on a 240 volt circuit you would have 3500 / 240 = 14.6 **amps**, which is within the 16 **amps** of the 80% rating of both a #12 AWG copper circuit, rating of 20 **amps**, and the 20 **amp** rated breaker.

How many amps does a 6 gallon hot water heater draw?

16.7 Amps