Circuito Iluminação
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
Our Circuit Lighting Calculator helps to calculate the total load of a lighting circuit in a building. It considers the power of each lighting point, as well as other factors that may affect the load, such as additional currents and efficiency losses.
To use this calculator, you need to know the power of each lighting point, which is usually 100 W per point. Additionally, you should consider if there are other equipment that will be connected to the circuit, such as motors or air conditioning equipment.
Here are some common precautions to take when calculating the load of a lighting circuit: make sure the total power does not exceed the circuit's capacity; check if the wires and connectors meet the circuit's specifications; and, if possible, use independent circuits for different areas of the building.
Frequently asked questions
What do I need to use this calculator?
You need to know the power of each lighting point and if there are other equipment that will be connected to the circuit.
What is the power per lighting point considered by this calculator?
The power per lighting point considered is 100 W per point.
Why is it important to calculate the load of a lighting circuit?
It is important to calculate the load to avoid overloads, efficiency losses and possible fires.
What should I do if the total power is greater than the circuit's capacity?
If the total power is greater than the circuit's capacity, it is recommended to increase the circuit's capacity or use an independent circuit.