Link to purchase the Electrical Calculations Spreadsheet: https://hotm.art/ytd-planilha-calculo... Link to purchase the Load Panel Calculation Spreadsheet: https://hotm.art/ytd-planilha-quadro-... Link to purchase the Electrical Plant Sizing Spreadsheet: https://hotm.art/ytd-planilha-plantas... __________________________________________________ If you like the Eletricity channel and want to contribute to the generation of quality content, then access one of the options below: PIX KEY ???? [email protected] QR CODE ???? https://bit.ly/doacao-pix __________________________________________________ Use the COUPON eletricity10 and get a super discount on the purchase of any INSTRUM product: ????️ https://bit.ly/instrum-brasil __________________________________________________ We would also like to thank our partner OHMIC Resistors and Rheostats. If you want to know a little more about OHMIC and the products it manufactures and sells, access the link below: ????️ https://bit.ly/ohmic __________________________________________________ Receive Eletricity content directly in your email! Sign up through the link below: ???? https://bit.ly/cadastro-eletricity __________________________________________________ ???? Check out our content ???? ???? https://linktr.ee/Eletricity __________________________________________________ When we need to turn on a piece of equipment and we don't have the compatible electrical voltage available, we resort to using transformers, either to change my voltage from 127V to 220V or vice versa. The use of these devices to turn on appliances in constant use should always be avoided and it may be that your electrical outlets don't have the voltage you need, but your distribution panel does. Let's look at an example. Imagine a residence powered by two phases and neutral. In some regions of the country, I can get 127V between phase and neutral and 220V between phase and phase. So in the house in our example, we have the possibility of obtaining both voltages in the distribution panel, but in the distribution of the circuits, all the sockets were supplied with 127V. In this case, an electrician can easily distribute a 220V circuit where there were only 127V sockets, deriving the necessary voltage from the distribution panel. Often this possibility does not exist and the only voltage available in the house may be 127V or 220V, with no possibility of change, except if in some cases the consumer requests a change in the power supply system to the utility company. If none of the options we mentioned are possible, the only option left is to use transformers and some rules must be followed for the appropriate choice. The most common transformers on the market are generally 127 to 220V or 110 to 220V. In addition to this indication, the maximum power is also present, which is related to what will be connected to the transformer. For example, if my transformer is rated at 2000VA (which is a type of power), this theoretically means that I can connect some loads with up to 2000W of power. Transformers heat up when they are in operation and the more load, the hotter they get, so a good tip would be to choose transformers with a capacity greater than the power to be installed. 50% more would be a good option. For example, if I want to connect 2000W of power, I choose a 3000W or 3200VA transformer, which are more easily found on the market. Remember that transformers consume energy even when there is no load and the higher the power, the higher the consumption. We have a video about this here on the channel. If it consumes even without a load, it is prudent to also turn off the transformer when I turn off my load. This can be easily achieved with an on-off switch. Now comes the biggest problem, which refers to capacity. There is nothing that prevents someone from exceeding the capacity of a transformer, except common sense. But what can happen if I exceed the capacity of my transformer? As we said before, the more load, the more it heats up. If the load exceeds the capacity, the temperature will probably follow the same principle. With this in mind, manufacturers use a thermal device that, when it senses a rise in temperature, turns off the power supply. But how does this device work? What can happen if I exceed the capacity of a transformer where there is none? We will show how an overloaded transformer works, first with the protection device and then without it. ???? Tune in to #electricity ????