Now this is a Transformer

Originally Posted by oldtoothlessbassmaster

there may be a reason why it looks like it's built like a tank........outdoor pad mounted distribution transformer

aluminum windings would be the least of the problem. if my quick search info is correct the cs-csp is a rating for oil-filled transformers

above the tag in the picture is a pipe plug



heres a close-up of the tag info

From the document at this link: http://www.nj.gov/drbc/library/docum...ansformers.pdf

It looks like this transformer could contain PCBs. First two digits of the serial number indicate it was manufactured in 1969. Third character indicates it was not manufactured at a plant that did not manufacture pcb containing devices. (You'll probably have to read that sentence a couple times for it to make sense.)

Copied from the document:

(Since the Jefferson City, MO plant was opened after 1972, any
pre-1972 transformer with a letter other than “A” as the third digit
cannot be assumed PCB non-contaminated.”)