No. Branch, MI, c1912. Residential Electric Service Pole, Transformers, Breakarm Bracket
By Joe Maurath, Jr.; posted April 26, 2019
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The latter is visible on the left-side end of the top crossarm. This bracket held an insulator on each side so that the series street lighting wires could be terminated on it; bringing the two wires down to the fixture that you can also see.