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A comment on Why does the USA use 110V and UK use 230-240V?. Parent comment

Re:Why does the USA use 110V and UK use 230-240V? by bitbckt on Tuesday August 29, 2023 @12:09PM (#37309998)
The circuit rating is 80% of nominal for continuous loads - runtimes of 3 hours or more - according to NEC in the US. Not sure what you mean by “regular appliance”; there is no such definition by code.

A kettle is fine at a full circuit load for under 3 hours.

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