See
Kuhlman Electric Corp. homepage
for up-close images of:
-- distribution tranformer
(local copy);
e.g., pole-mounted rated up to 500 kW at 35 kV, and
-- power transformers
(local copy)
rated up to
50 MW at 160 kV.
"http://www.physics.udel.edu/~watson/scen103/transformers.html"
Last updated Oct. 1, 1998.
Copyright George Watson, Univ. of Delaware, 1996.