Cable size calculator

Home ResourcesCable Size Calculator

DC Cable Voltage Drop Calculator

Input your data below to calculate minimum cable size required

System Voltage

Select...

Voltage Drop

Select...

Current (Amps)

Length (Metres)

Minimum cable size required

^{Based on the above details}

Enter actual cable size you will use

Selected size (mm)

Actual voltage drop

^{Based on cable size used}

The above is calculating cable size based on voltage drop. Always cross reference current carrying capabilities of the cable and any additional derating factors.