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 __________________________________________________ Link to download the calculation spreadsheet and transformer protection diagram: ???? https://eletricity.rds.land/planilha-... __________________________________________________ Receive Eletricity content straight to your email! Register using the link below: ???? https://bit.ly/cadastro-eletricity __________________________________________________ ???? Check out our content ???? ???? https://linktr.ee/Eletricity __________________________________________________ When using a 127V to 220V transformer, I ended up inverting and connecting 220V in the place indicated for 127V. What could happen? Can my equipment or my transformer burn out? If I have a 127/220V transformer and accidentally connect 220V where I should connect 127V, are my installation, transformer or equipment at risk? To answer this question, let's understand what a 127/220V transformer does. Let's first find the transformation ratio, that is, how many times an applied voltage is increased or reduced. If we divide 220 by 127, we get 1.73, which is our transformation ratio. This means that the voltage input to the 127V side is increased by 1.73 times and the voltage input to the 220V side is decreased by 1.73 times. If all of this is correct, if we mistakenly connect 220V to the side designed for 127V, we would have an increase of 220V x 1.73, resulting in 380V on the 220 side. This would certainly burn out the equipment connected at this point. Furthermore, we must also remember that the transformer we are using is an autotransformer, that is, we have an electrical connection between the primary and secondary. If the primary has a certain impedance and I apply 127V, we will have a certain current, even without a load. In theory, if we apply 220V to the same impedance, we will have a higher current and possibly the internal thermal device will act or the transformer will burn out. (watch the practical part of the video) We saw that it is very important to correctly check the input and output voltages of a transformer, as the slightest carelessness can put your installation and equipment at risk. This was another video where the practical demonstration proved the theory, so share it with your friends, subscribe to the channel and if the video was useful in any way, leave a like. Also leave test suggestions in the comments, they can be turned into videos on the channel. We are also on Facebook and Instagram, follow Eletricity and help us continue bringing theory and practice with lots of information. We believe that this is the best way to learn. If you want to learn a little more about transformers, we have a complete playlist on the channel. See you next time! ???? Check out #eletricity ???? __________________________________________________ ???? Most Watched Videos: We Threw a Hair Dryer in the Bathtub. What Happened? ???? • HAIR DRYER IN THE BATH CAN MAKE YOU... We debunk the myth of the shower incompatible with IDR (DR). ???? • WE DEBUNCH THE MYTH OF THE INCOMPATIBLE SHOWER... What THEY DIDN'T TELL YOU about the 3-PIN SOCKET CONTROVERSY. ???? https://bit.ly/2JE4P07 Ground and Neutral, Together or Separate? Why Has No One Told You This Before? ???? • GROUND AND NEUTRAL, TOGETHER OR SEPARATE? W... Where Does the Neutral Come From? How Does It Appear in the Transformer? Find Out in This Video. ???? • WHERE DOES THE NEUTRAL COME FROM? HOW DOES IT APPEAR ... Autotransformer x Energy Bill. You Can Save Up to 30 Reais If You Follow This Tip. ???? • AUTOTRANSFORMER x ENERGY BILL.... Three-Phase Motor Inside - See How It Works In Practice. ???? • THREE-PHASE MOTOR INSIDE - SEE HOW IT... How to Make a Curve and Unevenness in Electrical Cable Trays. ???? https://bit.ly/2ABlrk4 Do You Know All the Functions of the Wire Stripping Pliers? ???? https://bit.ly/2GD5Sun What is Best for Shunts in Electrical Panels? We Tested It for You, See the Result. ???? https://bit.ly/2MDdrHl We Connected 3 Lamps in a Star without Neutral. Will It Work? The Result is Impressive. ???? https://bit.ly/2BzUkH1 We Tested the WAGO 221 Connector and the Result Was Incredible. ???? https://bit.ly/2PknMoz Insulation Testing. ???? https://bit.ly/2wEYcDV