What Size Breaker Do I Need For A Dryer?

A right dryer will help you get more laundry done, and save you money. Buying a new dryer is a good decision that can affect your household’s comfort, your budget, and your laundry routine.

But how do you know which size breaker you need for your dryer? In this post, I’ll show you how to find out what size breaker you need for your dryer and most other related things to keep your dryer safe and secure.

What are the Proper Sizes of Breakers for Dryers?

In general, 20 amps and 30 amps breaker sizes are used in the United States. The number indicates the amperage of electricity that a dryer will require to operate properly. If you want to get the most efficiency out of your dryer, you should buy a dryer that has a 20 amp breaker.

Dryers with a 20 amp breaker use 1,000 watts or less. On the other hand, if you live in an area where the power grid is unreliable, you can buy a dryer with a 30 amp breaker. These dryers will be capable of using between 1,500 and 2,000 watts.

Keep in mind the breaker size of each dryer can be different. The dryer’s manufacturer can provide this information in their installation instructions.

240V Dryers: 20-30 AMPS

If you’re looking for a 240v dryer, general rules apply as to how much electricity it will require. Most standard dryers (i.e., not commercial units) will use 20 amps at 240 volts. It is enough power to accommodate most household needs and should be more than adequate for any common dryer.

220V Dryers: 10-30 AMPS

Now how many amps 220v dryer will need? Although 220 volts is a standard voltage for European homes and some older buildings in America as well. Going by old wiring may not be safe as there could be problems with wiring that cause it to overheat or corrode. So if this is the case, it’s time to get a new breaker. However, for 220v dryer, you can use 10-30 amps breaker.

120V Dryers: 7.5-15 AMPS

If you have a 120v dryer or plan to get one for your home, ensure that the circuit can accommodate this. These units require up to 7.5 to 15 amps for a dedicated circuit. If you’re not sure what size breaker I need for a dryer, it’s best to call an electrician and have them run a professional for your home’s electrical system. But in general, you can use 7.5 to 15 amp size breakers for 120-volt dryers.

A man checking circuit breaker health

What Happens if I Install a Circuit Breaker That is Too Low?

If you use a low amp circuit breaker to power your dryer, the dryer may not work properly. In this case, you may have to install a larger amperage circuit breaker. Keep in mind that when you use a 20 amp circuit breaker to power your dryer, the maximum amount of heat that it can produce is 1,000 watts.

The dryer may not work properly if you use a low-amp breaker even can damage. Also, the circuit breaker box starts buzzing and even fires. You will have to replace it. To find out what kind of circuit breaker you need, you should look at the specifications of the dryer.

These are usually provided in the installation instructions that come with your dryer. A dryer manufacturer can also provide this information on their website or the level of the dryer body.

What Happens if I Install a Circuit Breaker That is Too High?

If you install a circuit breaker for your dryer that is so high amperage, it might overload the electrical system. That means that the wires of your house or apartment might overheat, and you may burn the wires.

That is why it is very important to match your dryer amperage with the breaker. If the dryer is rated for a 20 amp circuit breaker, you should install a breaker that has a rating of 20 amps. Otherwise, the dryer may malfunction.


Can I use a 40 amp breaker for a 30 amp dryer?

Technically, this is a safe option. However, it might not be the best choice for you and your home’s safety. A 30 amp dryer can pull around 72 amps on a 240v circuit at peak usage. The 40 amp breaker should support that, but it could get overloaded and trip during peak usage. If that happens, the dryer won’t work.

Can I use a 50 amp breaker for a 30 amp dryer?

No, this isn’t safe, and it could lead to some serious problems. A 50 amp breaker is designed for industrial use and can easily overpower a 30 amp dryer. Since the dryer will try to pull more power than what the circuit can handle, it may catch on fire or even burst into flames if there’s enough heat.


Knowing what size circuit breaker to use for your dryer is extremely important. Using an incorrect amp rating could lead to serious safety problems for you and your family. Don’t worry, this guide will help you understand how much electricity your home needs and which options are safe. If you’re looking for a new dryer or want to install one in your home, it’s best to speak directly with an electrician to be sure that it will work properly.

Hey, my name is Palash Talukder, and I am the founder of Smart Home Protector. As a professional writer and tech entrepreneur since 2017, residing in Dhaka, I am passionate about staying up to date on home safety. With a Bachelor's Degree obtained in 2012, I continuously research and write blogs in various industries to share my knowledge and insights. In addition to Smart Home Protector, I also own several other blogs. My aim is to provide readers with the most current information on home safety & security and make their home safe and enjoyable even risk-free place. Read About Me More । Follow on FacebookTwitter

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