What can cause an oil transformer to explode?

An oil transformer can explode due to several critical factors such as insulation failure, overheating caused by excessive load or short circuits, moisture contamination leading to breakdown of insulation, and the presence of combustible gases generated from internal arcing. Additionally, improper maintenance, inadequate cooling, and manufacturing defects can also contribute to a catastrophic failure. It is essential to monitor transformer bushing conditions and regularly test oil quality to detect any degrading factors that may lead to such explosions. Always prioritize regular maintenance and adhere to safety standards to prevent incidents related to oil transformer bushing failures.