What is the maximum allowable wire temperature of the distribution box
（1） Operating temperature: The maximum rated operating temperature of the cable conductor is 90°C. When terminations are inside equipment such as panelboards, motor control centers, switchboards, enclosed circuit breakers, safety switches. In other words: at equal section, you can send more current through a cable insulated with XLPE than one with PVC because the one with XLPE can handle a higher core temperature. Exposure to warmer temperatures, coupled with the fact that usable life cycle of power equipment the data center thermal environment may affect power distribution. IEC 60950-1 and IEC61010-1 standards provide rules if exceeding maximum allowed temperature is required for functionality.
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