Volt drop cable calculator

[Stroppy]

Learn it as "milliVolts per amp per metre" rather than "em-vee ay-em" and it will make more sense. Div by 1000 because you want the anwer in Volts, not milliVolts.

 

[telectrix]

Where does this "Factor(1.20)" come from, moose?

the 1.2 factor is to allow for resistance variation with temperature. the tabled values are at 20dg.C so the actual figure at operating temp. will be higher.

 

[Silly Sausage]

The values in the tables are for the cables running at their maximum operating temperature.
You don't need this 1.2 factor for Volt drop calcs.
You can reduce the voltage drop for cables operating at lower temps by using the equation in App 4, 6.1

 

[telectrix]

The values in the tables are for the cables running at their maximum operating temperature.
You don't need this 1.2 factor for Volt drop calcs.
You can reduce the voltage drop for cables operating at lower temps by using the equation in App 4, 6.1

i stand corrected. was thinking of th resistance tables. you are correct in saying that the tabled values are @70deg.