Installing ceiling fans can be a great way to keep your home cool, but it’s important to understand how many fans you can install on a 15 amperes circuit.

The more wattage they require, the less number of fans you will be able to run. And vice-versa. You can operate roughly 18 fans with an average wattage of 80 if you solely attach fans to this circuit and no other appliances. Fewer fans can be run if there are other appliances connected to the same circuit.

This article will discuss how many ceiling fans you can run on a 15 amperes circuit, as well as some tips for installing fans safely.


How Many Ceiling Fans Can You Run on A 15 Amps Circuit All at Once?


If you are talking about only running fans all at once you can run about 18 fans assuming each of them has an average power rating of 80 watts.

But if there are also lights or other appliances running, the number of fans will be less. Let me elaborate on this for you.

A 15 amperes circuit means the circuit can pass a maximum of 15 amperes. If there is a current flow that exceeds 15 amperes, the circuit will be tripped off.

This is the characteristic of a circuit breaker. So, the maximum power capacity of a 15 amperes circuit at 120 volts is 1800 watts. To see more about it check how many watts can a 15-ampere breaker handle.

Though the maximum power capacity is 1800 watts, there is a saying you should limit the power to 80 percent of the maximum power. So, that rounds up to 1440 watts. This is the power we are going to take while calculating.

Now, at first, let’s think of only ceiling fans running in the circuit. Each of them is rated at 80 watts. So, you can run a total of 18 fans.

If there are 10 lights running and each rated 25 watts. Then the power consumption of the lights will be 250 watts.

The remaining 1190 watts will be used to run fans. Then the number of fans will be 14. This way you can count how many ceiling fans you can run at once.

What Happens If You Overload on A 15 Amps Circuit?

If you connect more fans than it can handle, I mean if the amount of fan you are running is about to draw more than 15 amps current, the circuit will be tripped off.

And you will not be able to start the circuit again until the load is brought under the overload level. A circuit breaker serves as a protector of the circuit by limiting current flow.

The rating of the breaker is chosen in a way so that the wires used in the circuit are not overloaded. Thus, it saves the circuit from getting damaged.

Will plug two surge protectors in the same outlet cause it to overload? It depends on the loads used in both of these surge protectors.

How Can I Safely Add Ceiling Fans to an Existing Circuit?

It is important to abide by a few safety precautions in order to prevent any sort of electrical malfunction. Below are some tips for adding a ceiling fan to an existing circuit.

Determine The Amperage of Your Circuit:

Before you add a ceiling fan, you’ll need to know the amperage of the circuit you’re working on. This information can usually be found on the electrical panel or by consulting with a licensed electrician.

Calculate The Total Load On the Circuit:

To ensure that you don’t exceed the capacity of the circuit, you’ll need to calculate the total load on the circuit.

This includes the amperage of the ceiling fan, as well as any other devices that are currently connected to the circuit.

Follow The National Electrical Code’s Guidelines:

The National Electrical Code (NEC) sets out guidelines for the safe installation of electrical wiring and devices, including ceiling fans. It’s important to follow these guidelines to ensure that your installation is safe and up to code.

Use The Correct Wiring and Connectors:

To safely add a ceiling fan to an existing circuit, you’ll need to use the correct wiring and connectors. This may include things like wire nuts, wire strippers, and electrical tape.

If you’re not familiar with electrical wiring, it may be a good idea to consult with a licensed electrician.

Test The Circuit Before Use:

Once you’ve installed the ceiling fan, it’s important to test the circuit to ensure that it’s working properly. This can be done by turning on the fan and checking for any unusual sounds or vibrations.

If you notice any problems, it’s best to turn off the circuit and consult with a licensed electrician.

Remember to always use caution when working with electrical systems, and never hesitate to seek the help of a licensed professional if you’re unsure about anything.


It’s important to understand how many ceiling fans you can safely run on a 15 amperes circuit. This knowledge is necessary to ensure that your home is safe and up to code.

Remember to check your local building codes, and consult an electrician if you have any questions. With the right knowledge and preparation, you can ensure that your home stays cool and safe all summer long.

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