sizing electrode conductor

[JEGCC]

[FONT=&quot]For a service panel fed by parallel 3/0 AWG copper conductors, the copper grounding-electrode conductor run from the service panel to the metallic water service shall be at least size-------AWG.[/FONT]?

 

[Dennis Alwon]

This sounds like a homework assignment. Look at the notes to Table 250.66 and see if that helps you.