Which condition is NOT typically associated with the failure of insulation in electrical equipment?

Failure of insulation in electrical equipment is primarily linked to various stress factors that can deteriorate or compromise the insulating properties of materials. Correct usage refers to operating electrical equipment within its designed specifications and guidelines. When equipment is used correctly, it is not subjected to conditions that would typically lead to insulation breakdown.

In contrast, overloading, extreme temperatures, and physical damage all create scenarios where insulation can fail. Overloading can cause excessive heat generation, leading to thermal degradation of insulation materials. Extreme temperatures, whether too high or too low, can weaken insulation properties and contribute to its failure. Physical damage can create breaches in the insulation, allowing moisture or contaminants to enter, resulting in insulation failure. Thus, correct usage stands out as the condition that does not induce the factors that lead to insulation failure.