If you do the NEC load calculations you will not come up short on power.

I would be willing to bet that if you do the calculations you will need a larger service.

If you take real load readings you will probably not need a larger service.

This is one area the NEC is not minimum.

The utility's many times figure the load to be 50% of the NECs calculations. [Linked Image]

Bob Badger
Construction & Maintenance Electrician
Massachusetts