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Electronic wire and cable
When designing control panels, marshalling panels, and patch panels it is often desireable to maximise the cross sectional area of the internal wiring being used to limit volt drop etc. However, the maximum diameter that your panel terminal, be it Weidmuller, Phoenix or whatever, can take places a restriction on you. Couple this with some cable suppliers specifying their cables in American Wire Gauge (AWG) and it has all the ingredients of a looming disaster.
The table below should make your choices easier to make:
| Solid Bare Copper Wire |
| AWG | Nominal
Diam
(mm) | Cross
Section
(mm2) |
| 10 | 2.6 | 5.23 |
| 11 | 2.3 | 4.155 |
| 12 | 2.05 | 3.29 |
| 13 | 1.83 | 2.63 |
| 14 | 1.63 | 2.07 |
| 15 | 1.45 | 1.651 |
| 16 | 1.29 | 1.3 |
| 17 | 1.15 | 1.039 |
| 18 | 1.02 | 0.816 |
| 19 | 0.912 | 0.653 |
| 20 | 0.813 | 0.514 |
| 21 | 0.724 | 0.412 |
| 22 | 0.643 | 0.322 |
| 23 | 0.574 | 0.259 |
| 24 | 0.511 | 0.203 |
| 25 | 0.455 | 0.163 |
| 26 | 0.404 | 0.127 |
| 27 | 0.361 | 0.102 |
| 28 | 0.32 | 0.08 |
| 29 | 0.287 | 0.064 |
| 30 | 0.254 | 0.051 |
| 31 | 0.226 | 0.04 |
| 32 | 0.203 | 0.032 |
| 33 | 0.18 | 0.025 |
| 34 | 0.16 | 0.02 |
| 35 | 0.142 | 0.016 |
| 36 | 0.127 | 0.013 |
| 37 | 0.114 | 0.01 |
| 38 | 0.102 | 0.008 |
| 39 | 0.089 | 0.006 |
| 40 | 0.079 | 0.005 |
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| Stranded Tinned Copper Wire |
| AWG | Stranding
No/AWG | Nominal
Diam
(mm) | Cross
Section
(mm2) |
| 12 | 7/20 | 2.44 | 3.61 |
| 12 | 19/25 | 2.36 | 3.07 |
| 12 | 65/30 | 2.41 | 3.27 |
| 14 | 7/22 | 1.85 | 2.26 |
| 14 | 19/26 | 1.85 | 1.93 |
| 14 | 42/30 | 1.85 | 2.06 |
| 16 | 7/24 | 1.52 | 1.42 |
| 16 | 19/29 | 1.47 | 1.216 |
| 16 | 65/34 | 1.5 | 1.3 |
| 18 | 7/26 | 1.22 | 0.891 |
| 18 | 19/30 | 1.24 | 0.957 |
| 18 | 42/34 | 1.2 | 0.819 |
| 18 | 65/36 | 1.2 | 0.845 |
| 20 | 7/28 | 0.89 | 0.504 |
| 20 | 19/32 | 0.94 | 0.612 |
| 20 | 42/36 | 0.914 | 0.533 |
| 22 | 7/30 | 0.762 | 0.352 |
| 22 | 19/34 | 0.787 | 0.38 |
| 24 | 7/32 | 0.61 | 0.226 |
| 24 | 19/36 | 0.61 | 0.239 |
| 24 | 42/40 | 0.584 | 0.201 |
| 26 | 7/34 | 0.483 | 0.14 |
| 26 | 19/38 | 0.508 | 0.153 |
| 28 | 7/36 | 0.381 | 0.071 |
| 28 | 19/40 | 0.406 | 0.093 |
| 30 | 7/38 | 0.305 | 0.056 |
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