A copper cable needs to carry a current of 200 A with a power loss of only 3.0 W/m. What is the required radius of the copper cable? (The resistivity of copper is 1.7 · 10** W m). а. 0.21 ст b. 0.85 cm с. 3.2 сm d. 4.0 cm

A copper cable needs to carry a current of 200 A with a power loss of only 3.0 W/m. What is the required radius of the copper cable? (The resistivity of copper is 1.7 · 10** W m). а. 0.21 ст b. 0.85 cm с. 3.2 сm d. 4.0 cm

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter10: Using Wire Tables And Determining Conductor Sizes

Section: Chapter Questions

Problem 10PP: Determine the ohms-per-mil-foot of an aluminum conductor located in an area with a temperature of...

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Question

A copper cable needs to carry a current of 200 A with a power loss of only 3.0 W/m. What is the
required radius of the copper cable? (The resistivity of copper is 1.7 · 10** W m).
0.21 cm
0.85 cm
3.2 cm
а.
b.
с.
d. 4.0 cm

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