👉 DOWNLOAD the SPREADSHEET: https://eletr.co/dim-inst 👉 War against Zé Faísca Event: https://eletr.co/aula-red2 ------ ✅ Did you like this video? - - - - - - - - - - - - - - - - - - - - - - - - - - - ✍️ Leave your comment 📢 Share with friends 🕵 Table link ➽ https://eletr.co/dim-inst - - - - - - - - - - - - - - - - - - - - - - - - - - - - For those who missed the first episode, I'll explain what's going on. This time we decided to innovate and we're going to show you how to do the electrical installation of a house. There's just one small detail. It will be an installation done entirely in 3D. In the previous episode you could see how we distributed the lighting points and sockets. It was a very interesting class, to start off on the right foot! In today's episode, we will define the circuits and size the cables and circuit breakers to meet these circuits, in a simple and fast way using an insane table created by ourselves that will automate everything for you, remembering that at the end of the class you will be able to download a copy for free. Class, the first thing we need to do is separate the circuits, this ensures the safety of the electrical installation and prevents overloads. And to organize this service, we will use the simplified load table from Engehall. And we will separate this installation as follows: Circuit 1 - Internal lighting of the house Circuit 2 - External lighting of the house Circuit 3 - Sockets in the living room and suite Circuit 4 - Sockets in the bedrooms Circuit 5 - Sockets in the bathrooms Circuit 6 - Sockets in the kitchen Circuit 7 - Sockets in the service area Circuit 8 - Shower in the suite and Circuit 9 - Social shower. Once the circuits are separated, we will size the cables and protections to meet these circuits. However, first, we need to know how much load each circuit should have. This dimensioning is important to avoid overheating of the cables/wires and to avoid unnecessary disconnections. And to know what load we need to predict, we need to refer to the standard again. This class load prediction is only available when there is no lighting design for the project. If there is such a design, you must comply with it, right? And to make our calculations easier, we will adopt 100W for each light point. Therefore, since we have 10 light points inside the house and 10 light points outside, we will predict 1000W for each circuit. “But André, the standard is talking about VA and you are using W, isn't that wrong?” In fact, my dear, we are using unitary power factor in this work, because it is a small house and even applying the power factor will not make much difference in the value of the load. In addition, it makes our calculations easier. Therefore, to serve circuit 3, we need to predict a load of 1300W and for circuit 4, 800W, since in these environments the standard requires 100W per point. For circuit 5, we need to predict a load of 1200W, for circuit 6, 2100W and for circuit 7, 1800W, since we must predict 600 VA per outlet point, up to three points, and 100 VA for the excess. Since circuits 8 and 9 are exclusive, the load is based on the power of the equipment, which in this case is predicted to be 6800W. And with the loads of each circuit in hand, we just need to enter the voltage of the circuits and the table will automatically provide us with the total current of the circuit. Now we just need to choose the appropriate circuit breaker for each circuit, taking into account the nominal current of the equipment and the capacity of the cables. And speaking of cables, for lighting, we will use 1.5mm2, as predicted by NBR5410. Now, for the outlets in the bedrooms, living room and bathrooms, we will use 2.5mm2 cables, also as required by the standard. For the kitchen and utility area circuits, we will use 4.0mm2 cables, since we don't know which equipment will be used in these places. And finally, for the showers, we will use 6.0mm2 cables. It's simple, right? With this information, you can create an electrical installation project for your home, respecting safety standards and ensuring that the equipment works properly. In the next episode, we'll return to the 3D project. We will have a specific class to analyze the rooms in the house and choose the best place to install the distribution board, also known as QDC. This is a point that many electricians have doubts about, so let's talk about the possibilities we have there! For those of you who liked this table and still want to use it automatically, just fill in the data and it will calculate it for you. I'm leaving a link for you to download it for free, fill in your name and email and I'll send it straight to your email. A big hug and see you in the next class, my dears!