Electrical Main Panel

Regardless of the number and size of breakers in the main and sub panel, the main 200amp is the limit on the total electricity drawn. More than 200amps would trip the main. More than 100amps on sub panel,will trip it.
I have installed one 200amp main, and currently feed three 100amp subs, as I have a large square footage. I also prefer wiring minimal fixtures to each smaller breaker to keep current down on each. All work inspected and passed here.