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The definitive guide to upgrading a Toyota LandCruiser 200

DC Voltage Drop Calculator

A Voltage drop calculator is a invaluable when wiring battery chargers, electrical accessories, driving lights, auxiliary batteries etc, particularly when dealing with long cable runs or high-load accessories. Use the calculators below to check voltage drop, so you can choose the correct cable size.

The 'voltage drop' result will dynamically re-calculate as the length, load and wire size fields are modified. The calculators below assume copper wire at 25ºC. Voltage drop increases slightly with temperature.

Bookmark this page by pressing Ctrl-D (Windows) or ⌘-D (Mac) for quick access.

Wire size conversion

American Wire Gauge (AWG) to mm2

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