A correction factor must be applied if the ambient temperature is above what degree Celsius?

In electrical practice, the need for a correction factor arises due to the impact of ambient temperature on the performance and safety of electrical equipment and conductors. Typically, standard conditions for testing and performance ratings often assume an ambient temperature of 25°C. If the temperature exceeds this baseline, adjustments must be made to account for the increased resistance and potential overheating that can occur with higher temperatures.

When discussing the requirement for applying a correction factor, many standards specify that this becomes necessary above 30°C. At temperatures exceeding this threshold, the thermal effects on electrical components can lead to degraded performance and possibly unsafe conditions, necessitating the application of a correction factor to ensure that systems operate safely and efficiently.

Therefore, recognizing that 30°C is the commonly accepted point at which corrections should be implemented in electrical applications helps ensure compliance with safety regulations and operational integrity.