Depends where the home is. Since you don't say, we can't help. If, on the outside chance you are in the USA, it would be the NEC. Tell me where you live and I'll tell you what NEC means.
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"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Usually, it will be total average load needed for each domestic home. All these circuit breaker will be determine by your local power utility authorities charge-man, who has a valid charge-man license to design all the domestic home power supply requirement and will determine the size of the circuit breaker for all the domestic home base on the total average load
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Management is just like a bunch of Monkey sitting on a tall tree. Some climb to the highest branch and some at the lowest branch. The highest Monkey look down and see a lot of happy faces but the lower Monkey looks up and see nothing but all the....