Tefzel Wire Amperage Chart
One of the most commonly asked questions is how many amps Tezfel wire is rated for. That is a very tough question to answer without knowing many different variables. For just this reason, the following table is strictly intended to be used as a general guide. In addition, individual applications, whether communications, control, power, etc., need to be examined and all appropriate safety factors considered.
Keep in mind that when your Max Feet decrease your amperage rating increases.
The chart below will suffice for most motorsport, automotive and industrial applications, and this assumes your wire/s are bundled in heat-shrink and you are using 1 of the wire types below :
- M22759/32
- M22759/16
For wire/s in free air and not bundled you can use Aerospace & Defense Singles Ampacity Rating (PDF, 157 KB)
| AMPACITY CHART | |||||
| AWG | Mili-Ohms /FT | 35º C Rise | 10º C Rise | ||
| Amps | Max Feet | Amps | Max Feet | ||
| 2 | 0.0156 | 100 | 44 | 54 | 83 |
| 4 | 0.249 | 72 | 39 | 40 | 70 |
| 6 | 0.395 | 54 | 33 | 30 | 59 |
| 8 | 0.628 | 40 | 28 | 20 | 55 |
| 10 | 1 | 30 | 23 | 15 | 47 |
| 12 | 1.59 | 20 | 22 | 12.5 | 35 |
| 14 | 2.53 | 15 | 18 | 10 | 28 |
| 16 | 4.01 | 12.5 | 14 | 7 | 25 |
| 18 | 6.39 | 10 | 11 | 5 | 22 |
| 20 | 10.2 | 7 | 10 | 4 | 17 |
| 22 | 16.1 | 5 | 7 | 3 | 15 |
| Chart data is compliments of The best website for in-depth info on motorsport wiring RB Racing | |||||
