Calcolatore Dissipazione di Potenza — Formula
## Wire Gauge Resistance
### AWG Diameter
**d(mils) = 1000 x 92^((36-AWG)/39) / 200**
### Resistance
**R = rho x L / A**
Copper: rho = 10.37 ohm-cmil/ft at 20 C.
### AWG Diameter
**d(mils) = 1000 x 92^((36-AWG)/39) / 200**
### Resistance
**R = rho x L / A**
Copper: rho = 10.37 ohm-cmil/ft at 20 C.
Esempio Risolto
100 ft of 12 AWG copper.
- Diameter = 80.81 mils
- Area = 6530 cmil
- R = 10.37 x 100 / 6530 = 0.1588 ohms
- Round-trip = 0.3177 ohms