Voltage Drop Calculator for Cable Sizing

By William Conklin, Associate Editor

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Voltage Drop Calculator

System Type

Voltage

Current (A)

Length

Length Unit

Material

Wire Size

Voltage Drop

% Drop

Voltage at Load

Voltage Drop Calculator Inputs and Outputs

Inputs: voltage, current, conductor length, material, wire size. Outputs: voltage drop, percentage drop, voltage at load.

Voltage Drop Calculator Use

Enter values and review results. Adjust conductor size or length if voltage drop is too high.

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