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Home ToolsDC Cable Voltage Drop Calculator

DC Cable Voltage Drop Calculator

WHATSON / SOLAR & BATTERY

DC Cable Voltage Drop Calculator

Estimate resistive DC drop in a two conductor circuit from an entered conductor area.

Starting values are editable examples. Enter your own loads, datasheet values and site assumptions.

1 Circuit

DC source voltage (V)Current (A)One way cable length (m)

2 Conductor

Conductor cross section (mm²)Resistivity at entered condition (Ω mm²/m)Default is an illustrative copper approximation; adjust for material and temperature.

DC Cable Voltage Drop results

Your calculation

Your energy worksheet starts here

Enter your load, battery and solar assumptions to see the calculation and itemised worksheet.

Planning arithmetic with explicit assumptions. Equipment limits and site design need independent review.

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