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I learned later that there are two hot wires (240V across), and the transformer center tap (neutral) is also the steel guywire between the street and house poles (65' run in our case). The fourth, ground, wire is created with ground rods at the pole.

A2_UpPoleToWeatherHead.jpg (165 Kb) (under photos/25/0614-16_CathiesCabin/)

By Alan Silverstein, ajs@frii.com (page updated Fri Oct 31 16:49:21 MDT 2025)