| Property |
Value |
| Gauge 31 Diameter (in) |
0.00893 in |
| Gauge 31 Diameter (mm) |
0.227 mm |
| Gauge 31 Turns of Wire (per inch) |
112.0 turns/in |
| Gauge 31 Turns of Wire (per cm) |
44.1 turns/cm |
| Gauge 31 Cross-Sectional Area (kcmil) |
0.0797 kcmil |
| Gauge 31 Cross-Sectional Area (mm²) |
0.0404 mm² |
| Copper Resistance (Ω/km or mΩ/m) |
426.9 mΩ/m |
| Copper Resistance (Ω/kft or mΩ/ft) |
130.1 mΩ/ft |
| NEC Copper Wire Ampacity (60°C) |
0 A |
| NEC Copper Wire Ampacity (75°C) |
0 A |
| NEC Copper Wire Ampacity (90°C) |
0 A |
| Fusing Current (10 s) |
9.0 A |
| Fusing Current (1 s) |
12.0 A |
| Fusing Current (32 ms) |
69.0 A |
Frequently Asked Questions (FAQs) About 31 AWG Wire
What does AWG stand for?
AWG stands for American Wire Gauge, a standardized system for measuring wire sizes. The smaller the AWG number, the larger the wire diameter.
How does 31 AWG compare to 30 AWG?
31 AWG wire is smaller than 30 AWG, with a diameter of 0.227 mm compared to 0.255 mm for 30 AWG. It has the same ampacity (0 A at 90°C) but a smaller cross-sectional area and higher resistance.
What applications are suitable for 31 AWG wire?
31 AWG wire is typically used for extremely low-current applications, such as fine electronics, hobby projects, or small signal wiring, due to its limited ampacity.
What happens if the fusing current is exceeded?
If the fusing current is exceeded (e.g., 9 A for 10 seconds in 31 AWG), the wire will overheat and melt, potentially causing a fire hazard or circuit failure.
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