The Aluminum Electrical Conductor Handbook Lists a Dc Resistance Of 0.01552

Essay

The Aluminum Electrical Conductor Handbook lists a dc resistance of $0.01552 \mathrm{ohm}$ per $1000 \mathrm{ft}$ at $20^{\circ} \mathrm{C}$ and a $60-\mathrm{Hz}$ resistance of $0.0951 \mathrm{ohm}$ per mile at $50^{\circ} \mathrm{C}$ for the allaluminum Marigold conductor, which has 61 strands and whose size is $1113 \mathrm{kcmil}$ . Assuming an increase in resistance of $1.6 \%$ for spiraling, calculate and verify the dc resistance. Then calculate the dc resistance at $50^{\circ} \mathrm{C}$ , and determine the percentage increase due to skin effect.