Assume a branch circuit rated at 90 A is to be installed using copper wire with type THW insulation. Use the accompanying table to determine what size conductor should be used for this installation.



a. #2 AWG copper conductor

b. #3 AWG copper conductor

c. #4 AWG copper conductor

d. #6 AWG copper conductor


c. #4 AWG copper conductor

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In a(n) ____ joint the edges of the metal meet so that the thickness of the joint is approximately equal to the thickness of the metal.

A. tee B. lap C. butt D. outside corner

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