Grounding and bonding at additional panel

[joelf]

I have an existing 320 amp meter base with an existing 200 amp panel. There is a 200 amp disconnect next to the meter. I’m getting ready to feed a second 200 amp panel out of the disco for a second phase of the house. I’ll use PVC. Do I need 4/0 4/0 2/0 with a #4 ground? Do I need the #4 ground or will I ground and bond at the service equipment? The second 200 amp panel

 

[infinity]

You're feeding the new disconnect from the meter? If so those are service conductors so no EGC is required before the disconnect.

 

[augie47]

and......once you leave the disconnect you need the #4 equipmemt grounding conduitor to the new panel.