Circuito Tomadas
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The circuit breaker calculator is a useful tool for designing and calculating the electrical load of a circuit breaker. It helps to determine how many breakers can be connected to a circuit without exceeding the load capacity.
The underlying formula for this calculator is simple and easy to understand: the total load is calculated by multiplying the nominal current of each breaker by the number of breakers in the circuit. This helps to avoid overloading and ensure that the circuit operates correctly.
Here are some scenarios where this calculator is useful: when you are planning an electrical installation in a new construction, when you are adding more breakers to an existing circuit, or when you need to calculate the load of a circuit breaker in a specific location.
Remember to be careful when working with electrical circuits, as they can be hazardous if not treated properly. Make sure to follow local regulations and to hire a qualified professional if you are unsure about how to proceed.
Frequently asked questions
What is the nominal current of a breaker?
The nominal current of a breaker is the amount of electrical current that the breaker is designed to handle without exceeding the load capacity. It's essential to have this information to calculate the correct load of the circuit.
Why is it essential to calculate the load of the circuit?
Calculating the load of the circuit helps to avoid overloading and ensure that the circuit operates correctly. This also helps to prevent equipment damage and fires.
What are the common precautions when working with electrical circuits?
The common precautions include following local regulations, using personal protective equipment, avoiding overloading, and maintaining a safe and well-ventilated workspace.
When should I hire a qualified professional?
You should hire a qualified professional if you're unsure about how to proceed with the electrical installation, if you lack experience working with electrical circuits, or if you need help calculating the load of the circuit.
What happens if I exceed the load capacity of the circuit?
If you exceed the load capacity of the circuit, you may cause equipment damage, trip the breakers, and create a fire hazard. It's essential to avoid overloading and calculate the load of the circuit correctly.