Which cancer-causing material is commonly found in transformers?

Polychlorinated biphenyls (PCBs) are synthetic organic chemicals that were widely used in electrical equipment such as transformers and capacitors due to their non-flammability and electrical insulating properties. However, PCBs are known to be toxic and carcinogenic. They were banned in the late 1970s in many countries due to their harmful effects on human health and the environment, including links to various types of cancer.

When transformers containing PCBs are damaged or improperly disposed of, these chemicals can leach into the environment, posing health risks to exposed individuals. Understanding the dangers of PCBs is critical for firefighters and those working in related fields, as they may encounter this material in older electrical equipment. Knowledge of such hazardous materials is essential for ensuring the safety of both emergency responders and the public.