dc 12v 500a voltage drop wire gauge
Free calculate voltage drop in electrical circuits. determine voltage loss across wires and components using current, resistance, and length.
Input Parameters
Copper: 1.72×10⁻⁸, Aluminum: 2.65×10⁻⁸
Results
Enter parameters to calculate voltage drop
Voltage Drop Formulas
Ohm's Law
V = I × R
Where V = voltage drop, I = current, R = resistance
Wire Resistance
R = ρ × L / A
Where ρ = resistivity, L = length, A = area
Voltage Drop Percentage
% Drop = (V_drop / V_supply) × 100
Typically should be < 3-5%
Common Resistivities
- • Copper: 1.72×10⁻⁸ Ω⋅m
- • Aluminum: 2.65×10⁻⁸ Ω⋅m
- • Silver: 1.59×10⁻⁸ Ω⋅m
- • Gold: 2.44×10⁻⁸ Ω⋅m