Dimensionamento Elétrico Casa
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
30 W/m²
About this calculator
The house power calculator is a useful tool for dimensioning the electrical demand of a residential property. Based on the 30 W/m² formula, it helps to calculate the amount of power needed to meet the needs of lighting, kitchen appliances and other electric equipment.
This formula is widely used in residential construction projects to ensure that the electrical installation is sufficient to meet the user's needs. In addition, the calculator is also useful for making adjustments and reviews in existing projects.
It is worth noting that the required power can vary depending on the type of equipment and its usage. For example, an air conditioner can require more power than a desk lamp.
Frequently asked questions
What are the cases in which I should use this calculator?
This calculator is ideal for residential construction projects, reviews in existing projects and adjustments in electrical installations.
Why is the formula 30 W/m²?
The 30 W/m² formula is widely used in residential construction projects to ensure that the electrical installation is sufficient to meet the user's needs.
What happens if I don't follow the formula?
If you don't follow the formula, there may be problems of overloading the electrical installation, which can cause fires, damage to equipment and even injuries.