What is the resistance of 300 feet of 10 AWG solid aluminum conductor?

To determine the resistance of 300 feet of 10 AWG solid aluminum conductor, it is important to use the standard resistivity values for aluminum and the formula for calculating resistance.

The resistance (R) can be calculated using the formula:

[ R = \rho \cdot \frac{L}{A} ]

Where:

• ( R ) is the resistance in ohms (Ω),

• ( \rho ) is the resistivity of the material (aluminum in this case),

• ( L ) is the length of the conductor in feet,

• ( A ) is the cross-sectional area in circular mils.

For 10 AWG aluminum wire, the resistivity is approximately 12.9 micro-ohm-cm or about 0.0000129 ohm-cm. The cross-sectional area for 10 AWG cable is about 10,380 circular mils.

Since the length needs to be in consistent units, we convert feet to centimeters (1 foot = 30.48 cm):

300 feet ≈ 914.4 cm.

Substituting the values into the formula gives:

[ R \approx 0.0000129 , \Omega \cdot \