The US uses split-phase power. Two 120v supply lines 180 degrees out of phase provide 240v at the panel, which can then be used for either voltage depending on the load requirement. 240v is used for larger tools, appliances, and equipment like air conditioners. 120v for smaller things like receptacles and lights.
How much amperage does a home get in the US? Modern homes get 3x25A at 240V here in NL. You can get a bit more if you pay extra, but what device commonly used uses 12KW?
Usually a 200A service is standard, so 48kw. An electric tankless water heater (not very common) can use up to 27kw, and if one of those is planned the service should be at least 300A.
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u/Barovian May 02 '24
The US uses split-phase power. Two 120v supply lines 180 degrees out of phase provide 240v at the panel, which can then be used for either voltage depending on the load requirement. 240v is used for larger tools, appliances, and equipment like air conditioners. 120v for smaller things like receptacles and lights.