Answered: Ten #3 AWG copper load carrying…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Ten #3 AWG copper load carrying conductors with type THHW, 75^oC insulation are installed in a rigid metal conduit, RMC. What is the final loaded allowable ampacity for each conductor?

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Full load allowed on the #3 AWG copper conductor of type THHW $90 °$ C insulation is 260 amps as per NEC code.

When ten #3 AWG copper conductor of type THHW $75 °$ C insulation is installed in RMC the capacity of each conductor is reduced to 80% of the maximum ampacity as per the NEC code.

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