AWG 30 Wire
Diameter 0.0100″
Millimeters 0.254 mm
Cross-section 100 cmil
mm² 0.0507
Nominal bare-conductor dimensions per ASTM B258. AWG is geometric: d = 0.005 × 92(36−n)/39 in with n = 30; area is derived from the diameter. Ampacity depends on insulation, bundling, and the electrical code in force — it is a property of the installation, not the gauge.
Neighboring gauges
| AWG | Diameter | mm | vs AWG 30 |
|---|---|---|---|
| 28 | 0.0126″ | 0.320 | +0.0026″ |
| 29 | 0.0113″ | 0.287 | +0.0013″ |
| 30 | 0.0100″ | 0.254 | — |
| 31 | 0.0089″ | 0.226 | −0.0011″ |
| 32 | 0.0080″ | 0.203 | −0.0020″ |
Measuring sheet metal, not wire? Sheet uses a different gauge scale — see 30 gauge sheet (steel: 0.0120″).