Project Inputs
Enter the circuit and conductor design conditions.
Voltage Drop Calculator
Estimate conductor voltage drop, load voltage, circuit resistance, power loss, and a suggested conductor size for copper or aluminum.
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Calculated Results
Results update automatically as input values change.
Voltage drop——
Estimated load voltage—
Circuit resistance—
Estimated power loss—
Adjusted wire resistance—
Estimated load power—
Design statusEnter valid values to calculate.
A conductor recommendation will appear here.
This calculator provides an engineering estimate. Confirm conductor ampacity, termination ratings, installation conditions, and applicable electrical code requirements separately.
