Is It Bad to Live Above a Transformer?

Question

I have a friend who lives in a place that she converted to a liveable space at a movie studio complex; however, the space is right above the transformer used by the studios for power. At night we can sometimes hear some buzzing sounds. How dangerous is this? We've heard things like it causes cancer in the long run, and that it is simply not safe. Does she have to worry about it? She's been there about two years.

Answer 1

Transformers can produce powerful electromagnetic fields, but there is no definitive answer on the safety of living next to transformers.   Some people believe the electromagnetic fields cause health problems, and others do not.   Bona fide research on health risks has produced sometimes contradictory results.  

One thing is for sure, high capacity transformers occasionally explode if they get overloaded, but these types of transformers are not allowed inside of buildings.