Question: A 4 0 0 - amp electric current flows through a steel wire that has a diameter of 0 . 1 inch. The wire has

A 400-amp electric current flows through a steel wire that has a diameter of 0.1 inch. The wire has an electrical resistance of 0.05 ohms/ft of wire. The wire center temperature may not exceed 700F. What is the allowable outside surface temperature for the wire? The thermal conductivity for this stainless steel is 26 Btu/hrftF

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