SOLUTION

Ampacity. The maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

The definition of the term Ampacity states that the maximum current carried by a conductor varies continuously with the conditions of use as well as the temperature rating of the conductor insulation. For example, ambient temperature is a condition of use. A conductor with insulation rated at 60 ° C and installed near a furnace where the ambient temperature is maintained constant at 60 ° C with no current-carrying capacity. Any current flowing through the conductor will raise its temperature above a 60 ° C insulation rating. Therefore, the mobility of this conductor, regardless of its size, is zero.