PCBs (Polychlorinated biphenyls) is commonly used as dielectric fluids in electrical equipment such as transformers and capacitors and can be found in metal-cased capacitors in fluorescent lights and it used worldwide.
Generally, short term exposure to PCB such as accidental spills or release of vapours due to overheating of the leaking capacitor does not lead to any long term health effects. however the accessive amounts of PCBs can cause irritation to the eyes and long term health problem with skin, hair and liver.
PCBs are listed as a human carninogen i.e; repeated exposure over a period of years may lead to cancer.
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