what size ground for 200 amp service

[GarrettDella]

For a 200-amp service, the equipment grounding conductor typically requires #6 AWG copper wire, while the grounding electrode conductor (GEC) is usually #4 AWG copper or an equivalent aluminum size, based on the service entrance conductors. The exact size depends on the type of ground electrode and conductors used, so it’s important to confirm compliance with local electrical codes.