27 AWG (American Wire Gauge) wire specifications: 0.3606 mm diameter, 0.1021 mm² area. Resistance, weight, and common uses.
| Diameter | 0.3606 mm · 0.014196" · 14.2 mils |
| Cross-sectional area | 0.1021 mm² · 202 circular mils |
| Resistance (copper, 20°C) | 168.8404 Ω/km · 51.4625 Ω/1000ft |
| Resistance (aluminum, 20°C) | 276.79 Ω/km · 84.365 Ω/1000ft |
| Ampacity — copper 60°C | — A |
| Ampacity — copper 75°C | — A |
| Ampacity — copper 90°C | — A |
| Ampacity — aluminum 75°C | — A |
| Weight (copper) | 0.915 kg/km · 0.615 lbs/1000ft |
| Weight (aluminum) | 0.276 kg/km · 0.185 lbs/1000ft |
| Closest IEC 60228 size | 0.1021 mm² actual — smaller than 0.5 mm², the smallest IEC 60228 size |
| Skin depth at 60 Hz | 8.531 mm |
| Type | Temperature | Description |
|---|---|---|
| PVC | 60-105°C | General purpose insulation |
| Teflon (PTFE) | 200°C | High temperature applications |
| Silicone | 200°C | Flexible, high temperature |
| Enamel | 155-220°C | Magnet wire coating |
27 AWG wire (0.3606 mm diameter, 0.1021 mm²) is found in small transformer windings, relay coils, and miniature motor windings. It is used in precision instruments, hearing aids, and some types of magnet wire for electromagnetic coils. It falls between the more common 26 and 28 AWG sizes.
27 AWG wire has a diameter of 0.3606 mm (0.014196 inches, or 14.20 mils). Its cross-sectional area is 0.1021 mm². This diameter is calculated from the AWG formula: d = 0.127 × 92^((36−n)/39), where n is the gauge number. For comparison, 27 AWG is about 5.2× the thickness of a human hair (approximately 0.07 mm).