JG are you asking about Table 310.15?
You may use that table in some applications you never have to
use that table.
If this service lateral is customer owned and covered by the NEC the choices are Table 310.16 which would allow 180 amps per 4/0 AL or as option you could use Table 310.15 which would allow the 4/0 AL to run a 200 amp service.
Any chance you have two sets of 4/0 AL?
Any chance the 4/0 was copper not aluminum?
It is worth noting that the service conductors feeding two or more disconnects do not have to be rated as high as the total overcurrent protection.
Service conductors feeding two or more disconnects only have to be rated to handle the load.
With a load calc of 228 amps 4/0 AL is out of the question.
4/0 copper would do it with a rating 230 with a calculated load of 228.