On 9 Jul 2003 11:55:18 -0700, N2EY wrote:

That amazed me too - but there's only one insulator on the pole pig
and one wire crossing the street to same. Three phase primary is
three wire, so there isn't even a Wye Neutral for return.

I first saw this system along the Trans-Canada highway in Alberta in
1970 and I put it down to the rural-ness of the area. But suburban
Portland in the 21st Century?

Are there NO other wires on the pole?

I checked it out a lot closer - there appears to be a neutral wire
running quite a distance below the primaries but above the cable and
telco stuff. It looked a lot like a messenger or guy wire, but it is
most probably serves as the neutral of a Wye primary.

Earth return will work fine, if the ground is good enough.

The rocks of western Oregon do not fall into that category.....

--
73 de K2ASP - Phil Kane