HELP & TOOLS

Voltage-Drop Calculator

Estimate how much voltage a cable run loses at your chosen load.

For SY, Arctic or other sizes, enter the coefficient for your exact cable and supply arrangement from the manufacturer’s datasheet.

Enter the cable data and calculate to see your estimate.

H07RN-F reference coefficients: Eland cable data at 60°C conductor temperature. Check against the exact cable supplied.

Reference calculation assumes a power factor of 1 and, for three-phase, a balanced load. It excludes upstream voltage drop and contact resistance. Motor starting and unbalanced loads need separate assessment.

This is a voltage-drop estimate, not confirmation of current capacity, protection, earthing or installation suitability.

View manufacturer reference data ↗