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hello and welcome to learn electrics weamp;#39;re often asked about the voltage drop formulas and how to use them in this video we will look at the main formulas and some other interesting transformations of them so letamp;#39;s begin the three main questions that we are asked are what is voltage drop why is it important and how do we use the formulas voltage drop is the difference in the voltage measured at the consumer unit or distribution board and the voltage that is measured at the point of use such as the shower the cooker the garage light and so on this slide will show you this here at the consumer unit the yellow arrow is indicating 230 volts this circuit is supplying a seven kilowatt cooker that currently has everything turned on so in this case let us say it is drawing its full load of 30 amps and we will ignore any diversity at the cooker the voltage might only be 220 volts this means that 10 volts has been lost somewhere it can only be in the cable to the cooker one end o
