Hello,
My aluminum underground service entrance conductors are not marked with their size on the visibile part of their insulation. And the local utility claims not to have the size information on file. So I took a closer look at the conductors. Each one appears to have 19 strands, as 6-7 strands are visible around half the perimeter. The outer diameter of the bundle of strands is 0.36" +/- 0.01", measured with plastic calipers.
I cross-referenced this info with one current manufacturer's data, and I came up with a size of 1/0. Does this sound right? Are the stranding and total OD of stranded wire standard across the industry, or is it possible that this cable is actually something smaller than
1/0? My information is that these wires were installed in 1989.Thanks, Wayne