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A single No. 10 copper wire with type THW insulation used in free air with an ambient temperature of 158°F has an approximate ampacity of:

A. 40.0 A
B. 36.9 A
C. 16.5 A
D. 28.6 A

Answer :

Final answer:

The approximate ampacity of a single no. 10 copper wire with THW insulation used in free air with an ambient temperature of 158F is 36.9A.

Explanation:

The approximate ampacity of a single no. 10 copper wire with THW insulation used in free air with an ambient temperature of 158F is 36.9A.

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