amp to wire calculator
Free calculate the correct awg wire gauge from circuit amperage, voltage, wire length, and voltage drop requirements.
Circuit Parameters
Results
Enter circuit parameters to calculate wire size
Wire Size Calculation Guide
Common AWG Sizes
- • 14 AWG: 15 amps
- • 12 AWG: 20 amps
- • 10 AWG: 30 amps
- • 8 AWG: 40 amps
- • 6 AWG: 55 amps
Important Notes
- • Voltage drop should be ≤ 3%
- • Consider ambient temperature
- • Always follow NEC code
- • Consult electrician for installations