Electrical Suite
Voltage Drop Calculator
Calculate electrical voltage drop along a conductor wire path based on distance, material, and cross-section.
Enter Parameters
Calculation Result
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Formula & Calculation Steps:
VD = 2 × L × R × I / 1000 (where R is AWG resistance in Ω/1000ft)
Understanding Voltage Drop
Voltage drop calculates the amount of electrical potential (voltage) lost over a length of wire due to its natural resistance. Calculating this ensures electrical equipment gets enough voltage at the end of long cable runs.
$$ V_{drop} = I \times R_{wire} $$
Voltage drop is calculated using Ohm's Law along the wire length.