In the United States, the National Electric Code sets standards for maximum safe currents in insulated copper

Question:

In the United States, the National Electric Code sets standards for maximum safe currents in insulated copper wires of various diameters. The accompanying table gives a portion of the code. Notice that wire diameters are identified by the gauge of the wire, and that 1 mil = 10-3 in. Find the maximum power dissipated per length in

(a) An 8-gauge wire and

(b) A 10-gauge wire.