said by DKS:[And full of PCB's...
Unlikely, but not impossible.
The transformer was installed in 1980 when we first moved onto the property. This was around the time of the big PCB scare. I was assured the transformer did not contain PCB. Utilities were going through a big replacement phase at the time so I have no reason to doubt the accuracy of that statement.
In the US manufacture of PCBs was banned in 1980. According the the EPA PCB use in transformers ended in 1977.
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www.epa.gov/reg3wcmd/ts_pcbs.htmBut your post prompted me to double check so I submitted a request to our utility.
/tom