Let’s imagine we are using a calculator to size a cable for a .
Three-phase supplies generally allow for smaller cables for the same load compared to single-phase, as the load is balanced across conductors. armoured cable size calculator
A calculator will automatically suggest the next size up: 10mm² . A 10mm² cable drops roughly 4.4 mV/A/m. $$4.4 \times \frac43.5 \times 401000 = 7.6 \text Volts$$ Let’s imagine we are using a calculator to