Originally Posted by
Gunnar Alquist
...That looks like stranded. If I remember correctly, stranded is not allowed for the GEC...
See
Stranded wire - InspectionNews.com .
Unless it's changed,
From the 2002 NEC.
"250.62 Grounding Electrode Conductor Material.
The grounding electrode conductor shall be of copper, aluminum, or copper-clad aluminum. The material selected shall be resistant to any corrosive condition existing at the installation or shall be suitably protected against corrosion. The conductor shall be solid or stranded, insulated, covered, or bare."