Boston, c.1905. Large Electric Lighting Service Distribution Transformer on Pole.
By Joe Maurath, Jr.; posted July 24, 2020 View Original: Click to zoom, then click to magnify (660 x 595) 111KB
Those two "rooftop" shaped boxes on each side of the transformer are either lightning arrestors or fuse cutouts. Whichever they were, they could have been made of cast iron.
