[datadrivenangel]

Usually the home service is 200+ amps these days which is 24 KW total across all circuits, though you're right that most individual circuits are only 10-15 amp.

[Kirby64]

48kW across all circuits. The 200 amp rating is at 240V for US electrics.

You’re limited to 24kW per leg if you ran everything only on 120V, but any really large server is going to be running off 240V anyways.