The recommended average operating temperature inside a cabinet is 35°C, with no more than 60% relative humidity levels. When these limits are exceeded, it can lead to overheating, reduced performance, and even failure of sensitive electrical equipment. Imagine opening an electrical distribution box only to find water droplets clinging to your expensive components like dew on morning grass. When warm air inside. Many components frequently found inside electrical enclosures, such as variable frequency drives (VFDs), servo drives, indicator lights, programmable logic controllers (PLCs), and transformers, create heat buildup that could result in such a temperature differential. Outdoor enclosures placed in. This is especially common in places with high humidity, like outdoor, coastal, or industrial areas.