Cable selection for long distances – why load current alone is not enough

What changes when the distance increases

As the line grows longer, the voltage drop increases and a larger cross-section may be required.

What we calculate

• Load current.
• Line length.
• Supply voltage.
• Installation method.
• Acceptable voltage drop.

Problem example

A motor at a long distance may have difficulty starting if the voltage at the end of the line drops excessively.