If you're referring to the standard 80% continuous load rule, it's 16 amps. But I wouldn't think a kettle would be considered a continuous load. If I wanted a

If you're referring to the standard 80% continuous load rule, it's 16 amps. But I wouldn't think a kettle would be considered a continuous load. If I wanted a British kettle in the US I'd wire up a 6-20R, buy a British kettle, and swap the plug.