1. Substation 2A have a busbar made of aluminum with a length of 5 meters and a cross sectional area is 4x3 sq. cm. The resistivity of the Aluminum at 20 DegC is 2.82x10^-8 ohm-m. Determine the resistance of the busbar. 2. The resistance of a copper wire at 20 deg.C is 30 ohms. If the temperature coefficient of copper at 0 deg.C is 0.00427, what is the resistance if the temperature is increased by 30 degrees?

1. Substation 2A have a busbar made of aluminum with a length of 5 meters and a cross sectional area is 4x3 sq. cm. The resistivity of the Aluminum at 20 DegC is 2.82x10^-8 ohm-m. Determine the resistance of the busbar. 2. The resistance of a copper wire at 20 deg.C is 30 ohms. If the temperature coefficient of copper at 0 deg.C is 0.00427, what is the resistance if the temperature is increased by 30 degrees?

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter4: Conductor Sizes And Types, Wiring Methods, Wire Connections, Voltage Drop, And Neutral Conductor Sizing For Services

Section: Chapter Questions

Problem 8R: Indicate the allowable ampacity of the following Type THHN (copper) conductors. Refer to Table...

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