When comparing a 10 AWG uncoated copper conductor to a 10 AWG coated copper conductor, which statement is false?

When comparing a 10 AWG uncoated copper conductor to a 10 AWG coated copper conductor, which statement is false?

• A. The uncoated conductor will have a greater resistance value.
• B. The coated conductor offers better corrosion resistance.
• C. The uncoated conductor is less expensive.
• D. Both conductors have the same ampacity under identical conditions.

Answer: (A)

The statement that the uncoated conductor will have a greater resistance value is indeed false. Resistance in a conductor is primarily determined by its material and dimensions. Since both conductors are made of copper and are of the same gauge, their resistance should be approximately the same when measured under identical conditions. The coating on the conductor does not inherently change the material properties of the copper itself but offers protection against environmental factors. The coated conductor provides advantages such as enhanced corrosion resistance, allowing it to maintain electrical performance over a longer period in adverse conditions. It is also worth noting that the inclusion of the coating can lead to a slight increase in the overall diameter of the conductor, but this does not directly alter the intrinsic resistance of the copper material. Additionally, the uncoated conductor tends to be less expensive to produce, as it does not require the additional processes or materials involved in applying the coating. Both conductors having the same ampacity under identical conditions is an important aspect to note, emphasizing that ampacity relates to the current-carrying capacity rather than the resistance.

The statement that the uncoated conductor will have a greater resistance value is indeed false. Resistance in a conductor is primarily determined by its material and dimensions. Since both conductors are made of copper and are of the same gauge, their resistance should be approximately the same when measured under identical conditions. The coating on the conductor does not inherently change the material properties of the copper itself but offers protection against environmental factors.

The coated conductor provides advantages such as enhanced corrosion resistance, allowing it to maintain electrical performance over a longer period in adverse conditions. It is also worth noting that the inclusion of the coating can lead to a slight increase in the overall diameter of the conductor, but this does not directly alter the intrinsic resistance of the copper material.

Additionally, the uncoated conductor tends to be less expensive to produce, as it does not require the additional processes or materials involved in applying the coating. Both conductors having the same ampacity under identical conditions is an important aspect to note, emphasizing that ampacity relates to the current-carrying capacity rather than the resistance.