30 AWG (American Wire Gauge) wire specifications: 0.2546 mm diameter, 0.0509 mm² area. Resistance, weight, and common uses.
| Diameter | 0.2546 mm · 0.010025" · 10.03 mils |
| Cross-sectional area | 0.0509 mm² · 100 circular mils |
| Resistance (copper, 20°C) | 338.5303 Ω/km · 103.184 Ω/1000ft |
| Resistance (aluminum, 20°C) | 554.97 Ω/km · 169.15 Ω/1000ft |
| Ampacity — copper 60°C | — A |
| Ampacity — copper 75°C | — A |
| Ampacity — copper 90°C | — A |
| Ampacity — aluminum 75°C | — A |
| Weight (copper) | 0.456 kg/km · 0.307 lbs/1000ft |
| Weight (aluminum) | 0.138 kg/km · 0.092 lbs/1000ft |
| Closest IEC 60228 size | 0.0509 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 |
30 AWG wire (0.2546 mm diameter, 0.0509 mm²) is the standard size for wire-wrap connections on prototyping boards and is common in thin hookup wire for electronics. It is used in small motor coils, RFID antenna windings, and breadboard jumper wires. Kynar-insulated 30 AWG is a staple in electronics labs.
30 AWG wire has a diameter of 0.2546 mm (0.010025 inches, or 10.03 mils). Its cross-sectional area is 0.0509 mm². This diameter is calculated from the AWG formula: d = 0.127 × 92^((36−n)/39), where n is the gauge number. For comparison, 30 AWG is about 3.6× the thickness of a human hair (approximately 0.07 mm).