A conductor begins at 75 amperes in the permitted insulation column. Supplied adjustment and correction factors are 80 percent and 91 percent. What ampacity results before terminal limitations?

Texas Journeyman exam practice question · Branch Calculations & Conductors

A conductor begins at 75 amperes in the permitted insulation column. Supplied adjustment and correction factors are 80 percent and 91 percent. What ampacity results before terminal limitations?

A73.2 amperes
B60.0 amperes
54.6 amperes
D68.3 amperes

Why C is correct

Apply both supplied factors to the starting ampacity: 75 × 0.80 × 0.91 = 54.6 amperes. Terminal and equipment limitations must then be checked separately.

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A conductor begins at 75 amperes in the permitted insulation column. Supplied adjustment and correction factors are 80 percent and 91 percent. What ampacity results before terminal limitations?

A conductor begins at 75 amperes in the permitted insulation column. Supplied adjustment and correction factors are 80 percent and 91 percent. What ampacity results before terminal limitations?

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