The DC resistance @ 167 degrees F for a 2/0 AWG bare aluminum conductor would be ____ ohms per thousand feet of conductor.

The DC resistance @ 167 degrees F for a 2/0 AWG bare aluminum conductor would be ____ ohms per thousand feet of conductor.

• A. 0.100
• B. 0.159
• C. 0.200
• D. 0.250

Answer: (B)

For a 2/0 AWG bare aluminum conductor, the DC resistance at a temperature of 167 degrees Fahrenheit is calculated based on established resistivity values for aluminum. Aluminum has a standard resistivity that can be adjusted for temperature variations. At 20 degrees Celsius (68 degrees Fahrenheit), the resistance of a 2/0 AWG aluminum conductor is approximately 0.098 ohms per thousand feet. The resistance of conductors increases with temperature, so as you move to 167 degrees Fahrenheit, the resistance value increases due to the positive temperature coefficient of resistivity for metals. Using the temperature correction factor, when applying the appropriate equations for aluminum, it is determined that the resistance at 167 degrees Fahrenheit reaches approximately 0.159 ohms per thousand feet. This value considers both the base resistance and adjustments for the increased temperature. Thus, the value of 0.159 ohms per thousand feet accurately reflects the DC resistance of a 2/0 AWG bare aluminum conductor at the specified temperature, making it the correct answer.

For a 2/0 AWG bare aluminum conductor, the DC resistance at a temperature of 167 degrees Fahrenheit is calculated based on established resistivity values for aluminum. Aluminum has a standard resistivity that can be adjusted for temperature variations.

At 20 degrees Celsius (68 degrees Fahrenheit), the resistance of a 2/0 AWG aluminum conductor is approximately 0.098 ohms per thousand feet. The resistance of conductors increases with temperature, so as you move to 167 degrees Fahrenheit, the resistance value increases due to the positive temperature coefficient of resistivity for metals.

Using the temperature correction factor, when applying the appropriate equations for aluminum, it is determined that the resistance at 167 degrees Fahrenheit reaches approximately 0.159 ohms per thousand feet. This value considers both the base resistance and adjustments for the increased temperature.

Thus, the value of 0.159 ohms per thousand feet accurately reflects the DC resistance of a 2/0 AWG bare aluminum conductor at the specified temperature, making it the correct answer.