12v wire size calculator
Free calculate the appropriate wire size (awg) from current, length, and voltage drop requirements for electrical circuits.
Circuit Parameters
Results
Enter circuit parameters to calculate wire size
Wire Size Selection
AWG Current Ratings
- • 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