Wire Gauge Calculator
Select the correct wire gauge based on current, distance, and maximum allowable voltage drop.
How to Use the Wire Gauge Calculator
- Enter the circuit current in amps.
- Enter one-way cable run length in metres.
- Enter the system voltage.
- Set the maximum allowable voltage drop percentage.
Cas d'utilisation
- •Residential wiring design
- •Solar panel cable sizing
- •Industrial power distribution
Formule
A = (2 × ρ × L × I) / V_drop
Questions fréquemment posées
How accurate is this calculator?
Results are based on standard engineering formulas and are suitable for preliminary estimates.
What units are used?
SI units (metres, kg, kPa) are used unless otherwise noted.
Is it free?
Yes, all calculators are completely free.