That is a standard CT setup for anything over 600A here in GA. The only thing i see different is we set the CT can away from the xfmr pad (dig the footing and pour it).

GA Power (Southern Company) provides the primaries, transformer, pad, CT can and pedestal. We provide the shovel, sacrete, pipe and secondary conductors.

Company policy is three phase you go to them, and single phase they come to you.