Double pole amp breakers are installed in the electrical panel bus with all other amp breakers in a house and come in multiple amperages.

The circuit breakers have a switching system that turns off when the flow of current increases as each pole breaker can control a certain amount of voltage. Now, is a double pole 20 amp breaker 40 amps?

The short answer is no. We’ll discuss the topic in detail in the article. Read on to know more.

Is A Double Pole 20 Amp Breaker 40 Amps

What Is A Double Pole Amp Breaker?

A double pole breaker is a circuit breaker. It is like adding two single pole circuit breakers to form one double pole circuit breaker where each hot wire is attached to both sides of the breaker. We can usually find them in the electrical panels of any home system and types of equipment like air conditioners, water heaters, electric ranges, etc.

These double panel pole breakers provide a voltage of 240-volts rated between 20 to 60 amps. They are incorporated with three conductors and are most suitable for systems that release heat. The double pole breakers have two hot wires and a neutral wire. When the amount of electric flow becomes too high in either of the hot wires, it trips to protect the house and other electrical circuits.

How To Figure Out What Amp Of Double Pole Amp Breaker To Use?

To figure out the current rating of a circuit breaker, we have to know four things. Once we know them, we can then move on to find out the rating. We will then use the rating to calculate the amperage in a circuit that we can use to determine our breaker. It will be easier for us to choose which double pole amp circuit breaker to use. The 4 four things that we must know are as follows:

  1. The total load or power
  2. The type of load
  3. The power factor of the load
  4. The line voltage

Once we have the values, we will put them in a simple equation used to calculate the current. The outcome of that equation will be the identifying amperage of the circuit breaker that we need. You need not be an expert to do the calculation, as it is simple. A calculator will suffice!

The equation to calculate the amp is: I=P/(Vx0.8)

Here I is the amp, P is the power, V is the voltage, and 0.8 is the power factor, also known as cos theta. There is a high chance that the result of your equation will be in a fraction. For example, for a 13.8 amp, you can use a 16-amp pole breaker. We must always use a pole breaker that has more current resistance. You could think of using a 13-amp pole breaker, but that won’t stop the current overflow successfully and lead to a disaster. 

Is A Double Pole 20-Amp Breaker 40 Amp?

A double pole 20-amp breaker is not 40 amp as it is a 20-amp breaker. So, it is only a 20-amp double pole amp breaker and is rated 20 amp. Although, a double pole 40-amp breaker is 40 amp. There are various types of double pole amp breakers with different amps. They vary in amps starting from 1 amp to above 100 amp. You might wonder how much amp the double pole breaker has. Depending on the voltage it controls, you can determine the amp. Each amp has a different voltage control. If it is a 20-amp breaker, then the amp is 20, and if it is a 60-amp breaker, then the amp is 60, and so on.

How To Check Amps In A Double Pole Amp Breaker?

There are a few ways to check the amps in a double pole breaker but, the easiest way to do so is by using a current clamp. As the current flows into the double pole breaker from the hot wires, you have to put the clamp around one of the hot wires to get the reading in the current clamp. Another way is to use the multimeter to get the amp reading. 

Where Is A Square D 40-Amp Double Pole Amp Breaker Used?

A square D 40-amp double pole breaker is applied to prevent short-circuit in electrical home systems to avoid overload. They are easy to use, and you can use them without facing any difficulty. It also provides the right amount of electricity throughout your house without an overload.

How To Install A 40-Amp Double Pole Amp Breaker?

First, you need the proper tools to install your double pole breaker. In this case, all you need is a flat head screwdriver or the number 2 screwdriver, a pair of gloves, and a pair of goggles. You have to be very careful around the exposed panel as it carries high voltage and can get electrocuted. Once you have gathered all the safety equipment, you then need to follow a few

Simple steps to install your pole breaker:

  • Step 1. Unscrew the panel and remove it safely
  • Step 2. Turn off the main breaker to cut the current flow
  • Step 3. Turn off the double pole breaker that you will install
  • Step 4. Slide in the double pole breaker into the slots
  • Step 5. Connect the hot wires to each breaker and screw them in place
  • Step 6. Screw back the panel cover

✓ Also Read: Why Does My Circuit Breaker Trip So Frequently? (Solved)

Final Words

These are the simple steps you can follow to install a pole breaker on your own. You need to make sure that you are careful around all the electrical circuits and equipment to protect yourself from the dangers of electricity, like getting electrocuted or burning down the house!