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 __________________________________________________ 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 __________________________________________________ Voltage Drop is one of the factors that need to be taken into account when calculating the cable. In addition to being a requirement of NBR-5410, not calculating the voltage drop correctly can cause premature loss of the cable and also a malfunction of the load, often leading to burning or permanent damage to this load. The most common effect of excessive voltage drop is overheating of the cable caused by resistance to the passage of electric current. That's right, folks, anyone who understands a little about electronics will understand what I'm saying here. The cable works like a resistor and makes it difficult for electric current to pass through it. This resistance value of the cable when multiplied by the current that passes through it gives us the answer to a voltage value that remains across the cable. We know that there is no perfect conductor material and copper also has its limits for conducting electric current, given by a value called resistivity. At a more opportune moment, we will break down the formula for copper resistivity to show you how it works. The important thing now is to understand that every conductor will create resistance to the passage of electric current, even if it is minimal. Therefore, it is important to size the cable so that the voltage drop in the cable does not exceed the values ​​recommended in NBR-5410. Another important factor in keeping the voltage drop in the cable low is that any voltage that remains on the cable will be lost at its load, which can often damage the load by forcing it to work with a voltage value lower than it was sized to work with. Another important point is the loss of efficiency: Imagine an electric shower that works with 220V. If you can deliver 220V to this shower, you will be ensuring that it works at its maximum power, but if this shower is receiving 180V, for example, you will not be ensuring that it will work at its maximum power. Most likely, if you measure the water temperature, you will notice that the shower has lost its efficiency in transforming electrical energy into heat. The electric shower was just one example, but we could mention a series of other examples. So, the most important thing, in addition to ensuring the voltage drop requirements according to NBR-5410, is to ensure that your load is working with the maximum voltage it was designed to work with. Then you will ask me: But what about full-range switching power supplies that work with voltage variation from 90 to 240V? These are special cases that should be covered in another video. I hope you enjoyed the video and don't forget to share it. ???? Stay tuned for #electricity ???? __________________________________________________ ???? Most Watched Videos: What THEY DIDN'T TELL YOU about the 3-PIN SOCKET CONTROVERSY. ???? https://bit.ly/2JE4P07 How to Make a Curve and Unevenness in Electrical Cable Trays. ???? https://bit.ly/2ABlrk4 Higher Voltage Lower Current, Truth or Myth? We Prove It For You (Part 01). ???? https://bit.ly/2xvtzRB Do You Know All the Functions of the Wire Stripping Pliers? ???? https://bit.ly/2GD5Sun What is Best for Shunting in Electrical Panels? We Tested It For You, See the Result. ???? https://bit.ly/2MDdrHl We Connected 3 Lamps in a Star without Neutral. Does 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 Insulator Test. ???? https://bit.ly/2wEYcDV Connection Test. ???? https://bit.ly/2MHQdzZ_ Do you know about threaded rivets? Do you know how to use them? ???? https://bit.ly/2J8bSMC We tested the Porcelain Connector. ???? https://bit.ly/2AddKRh