I suppose my basic question is what the normal mode of wiring these things is. It seems the way this thing is drawn is like a subdivision with homes having 200 amp loadcenters.
Yet we're feeding each space with just a maximum of 50 amp
outlet ? If the fifty amp is used and we feed each space with individual runs...then thats just 5 or 6 two pole outlets coming off one transformer ?? If the 50 is used in each space...its unlikely the 30 amp will be used. Now I agree voltage drop could be an issue on 4.5 acres. The spaces for the most part are side by side...and I suppose its possible to loop a 4/0 or pratt 250 alu. wire and catch 7 or 8 metered spaces and stay fairly close to the transformers.

The power company is charging the owners a little over
25,000 bucks to install one lift pole and pull the primary wire in. The owners are responsible to install the six fiberglass vaults and run the 2" pcv conduit from vault to vault. Of course the power company sits the transformers.

I probably need to drive around and look for a fairly new park and see what others have done.

I have a few days to come up with a price and I appreciate the replies....any additional comments always
helps......terry