| Property |
Value |
| Gauge 38 Diameter (in) |
0.00397 in |
| Gauge 38 Diameter (mm) |
0.1 mm |
| Gauge 38 Turns of Wire (per inch) |
252.0 turns/in |
| Gauge 38 Turns of Wire (per cm) |
99.3 turns/cm |
| Gauge 38 Cross-Sectional Area (kcmil) |
0.0157 kcmil |
| Gauge 38 Cross-Sectional Area (mm²) |
0.00797 mm² |
| Copper Resistance (Ω/km or mΩ/m) |
2164.0 mΩ/m |
| Copper Resistance (Ω/kft or mΩ/ft) |
659.6 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) |
3.0 A |
| Fusing Current (1 s) |
2.4 A |
| Fusing Current (32 ms) |
14.0 A |
Frequently Asked Questions (FAQs) About 38 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 38 AWG compare to 37 AWG?
38 AWG wire is smaller than 37 AWG, with a diameter of 0.1 mm compared to 0.1 mm for 37 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 38 AWG wire?
38 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., 3 A for 10 seconds in 38 AWG), the wire will overheat and melt, potentially causing a fire hazard or circuit failure.
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