Do I need two separate Grounding for two different voltages in the same Building?

[Tshering]

Hi colleagues,
I have a unique situation.
Back at home, we rented a part of building that already has single phase 230V (equivalent to 120V here). It has metering, service disconnect, grounding electrode conductor, grounding electrode (rod), and main bonding & jumper per code.
We needed 3-phase and got permit to pull in 3-phase 415V (equivalent to 3-phase 480V here). We ll have dedicated meter, service disconnect and ll use 3-phase for baking machine and single phase for lighting and receptacles (415/230V). My question is, do I have to dig a separate grounding rod for my 3-phase 4 wire service or can I connect my grounding electrode conductor to the existing grounding electrode that was for single phase 230V?
Thanks,

 

[LarryFine]

Sharing same electrodes is better. If you drove more, you'd have to interconnect them anyway.

 

[Tshering]

Thank you Larry.