AWG 29 Wire
Diameter 0.0113″
Millimeters 0.287 mm
Cross-section 128 cmil
mm² 0.0647
Nominal bare-conductor dimensions per ASTM B258. AWG is geometric: d = 0.005 × 92(36−n)/39 in with n = 29; 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 29 |
|---|---|---|---|
| 27 | 0.0142″ | 0.361 | +0.0029″ |
| 28 | 0.0126″ | 0.320 | +0.0013″ |
| 29 | 0.0113″ | 0.287 | — |
| 30 | 0.0100″ | 0.254 | −0.0013″ |
| 31 | 0.0089″ | 0.226 | −0.0024″ |
Measuring sheet metal, not wire? Sheet uses a different gauge scale — see 29 gauge sheet (steel: 0.0135″).