| Property |
Value |
| Gauge 20 Diameter (in) |
0.032 in |
| Gauge 20 Diameter (mm) |
0.812 mm |
| Gauge 20 Turns of Wire (per inch) |
31.3 turns/in |
| Gauge 20 Turns of Wire (per cm) |
12.3 turns/cm |
| Gauge 20 Cross-Sectional Area (kcmil) |
1.02 kcmil |
| Gauge 20 Cross-Sectional Area (mm²) |
0.518 mm² |
| Copper Resistance (Ω/km or mΩ/m) |
33.31 mΩ/m |
| Copper Resistance (Ω/kft or mΩ/ft) |
10.15 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) |
58.5 A |
| Fusing Current (1 s) |
158.0 A |
| Fusing Current (32 ms) |
882.0 A |
Frequently Asked Questions (FAQs) About 20 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 20 AWG compare to 19 AWG?
20 AWG wire is smaller than 19 AWG, with a diameter of 0.812 mm compared to 0.912 mm for 19 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 20 AWG wire?
20 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., 58.5 A for 10 seconds in 20 AWG), the wire will overheat and melt, potentially causing a fire hazard or circuit failure.
Home
Back