3/0 or250 aluminum
For a service conductor drawing 600 amps a #1 copper grounding conductor is needed.
To calculate the wire size, a system voltage is needed.
Use #10 copper.
The wire size used in a service entrance distribution panel is governed by the size of the services over current device. The larger the service, the larger the fault current could be, the larger the ground wire to carry the fault current to ground. If the largest service conductor carries 100 amps use a #8, 200 amps - #6, 400 amps - #3, 600 amps - #1, 800 amps - 1/0 and over 800 amps - 2/0 for the ground wire. <<>> Golden Valley Electric Assoc. in Alaska requires #4AWG copper wire for a ground from the breaker box to earth ground rod. The same goes from the service entrance panel on the pole.
Canada and US - Standard size breaker in home panel is 40 amps for stove. If not standard range open Discuss Question page.
#6 copper or #4 aluminum
#6 bare copper wire.
Sizing of ground conductors is based on the load capacity in amps of the generator. There is a table in the electrical code book which states an amperage and what size ground wire that is needed for that amperage.
Almost any average size home today will requre a 200 amp service panel.