Question 10.4: What is the maximum ampacity of a 1/0 AWG copper-clad alumin......

Delmar’s Standard Textbook of Electricity [1086273]

What is the maximum ampacity of a 1/0 AWG copper-clad aluminum conductor with Type RHH insulation if the conductor is to be used in an area with an ambient air temperature of 100° F?

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Locate the column that contains Type RHH insulation in the copper-clad aluminum section of Table 310.16. The table indicates a maximum ampacity of 135 A for this conductor. Follow this column down to the correction factor chart and locate 100° F. Fahrenheit degrees are located in the far righthand column of the chart; 100° F falls between 97° and 104°. The correction factor for this temperature is 0.91. Multiply the ampacity of the conductor by this factor.

$135 \mathrm{~A} \times 0.91=122.85 \mathrm{~A}$

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