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A ground ring consisting of 20' of #2 bare copper must be buried no less than 2.5 feet below grade

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Final answer:

To calculate the resistance of the wire, you can use the resistance formula and calculate the cross-sectional area first.

Step-by-step explanation:

The resistance of a wire can be calculated using the formula: R = (ρ * L) / A, where R is the resistance, ρ is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area of the wire.

In this case, we are given the length and diameter of the wire. The cross-sectional area can be calculated using the formula: A = π * (d/2)^2, where d is the diameter of the wire.

Given that the wire is made of copper, which has a resistivity of 1.7 x 10^-8 Ω·m, and a diameter of 2.053 mm, we can substitute the values into the formulas to find the resistance.

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