My cooktop is on a 30A breaker. I have measured the current (clamp meter at the panel), and it is a little over 30A with all elements on high, although that it unlikely to happen in normal use.
I remember electric stoves with 120V outlets on the control panel.
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I have a 100A main breaker, but the A/C compressor is connected to a separate 50A breaker (new unit is more efficient, and should need less than half that).