Which gauge of stranded uncoated copper conductor has a DC resistance of 3.14 at 175 feet?

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To determine which gauge of stranded uncoated copper conductor has a DC resistance of 3.14 ohms at 175 feet, it's useful to reference standard resistance per length for different AWG (American Wire Gauge) sizes.

In general, the resistance of copper conductors increases as the gauge number decreases; meaning that smaller gauge sizes (larger diameter) have lower resistance, while larger gauge sizes (smaller diameter) have higher resistance.

For stranded copper conductors, the following approximate DC resistance values can be examined:

  • 12 AWG has a resistance of about 3.08 ohms per 1000 feet.

  • 14 AWG has a resistance of about 2.0 ohms per 1000 feet.

  • 10 AWG has a resistance of about 1.24 ohms per 1000 feet.

  • 8 AWG has a resistance of about 0.778 ohms per 1000 feet.

Using these values, the resistance over 175 feet for each gauge can be calculated:

  1. For 12 AWG:

( \frac{3.08 \text{ ohms}}{1000 \text{ feet}} \times 175 \text{

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