Otter Tail Power - Wells County, ND

The Heaton substation - long downgraded from 3-phase.

 

The "neutral" on the incoming 41.6kV line likely was originally the third phase into the substation. Otter Tail Power's original construction standard called for two phases on the top arm and the third phase on a short arm below. After WWII, they changed to the much more common (and easier to build) delta arrangement.

Done