Hemingray CD 303/310 on Seattle City Light line -1904

By Mike Spadafora; posted December 18, 2009

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This picture was taken around 1904 when the City of Seattle was building the Ceder River powerhouse. The 44 kV pole line in the background was the main line to Seattle that ran along the aqueduct water line from the power plant to Seattle . This line was the first Seattle City Light transmission line. This line was upgraded to 60kV in 1907 and all the insulators were replaced with the Thomas M-3735 and the tops of the poles were refraimed with longer cross arms and new steel lee pins. [id=162593152] to see a specimen of this replacement type insulator. Robin Harison mentioned to me once that early collectors as well as lineman remember seeing large Muncies without bases in service in Seattle in the 1950's and 1960's. These were likely the original Ceder River insulators that were removed in 1907 and later reused in distribution service in Seattle. Sadly no pretty aqua-blue glass Muncies have survived to adorn the poles of Seattle today. Ed Sewell found a whole muncie top and several more broken ones on a hill above the powerhouse in 1999.

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