Gentlemen- as usual these threads seem to drift. That's not a bad thing because it brings in good information. BUT- The orginal post only talked about rods. Nothing was mentioned about steel or water . And for my money- two rods with a jumper (#6 awg cu) between them would constitute a grounding electrode system satisfying the code minumum requirement unless, there were other electrodes present. That said- a single Maximum size 6 AWG cu run to either rod gets the job done. The size of the service is a moot point. [Linked Image]

George Little