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yyytobyyy t1_j0fw75r wrote

Reply to comment by Stopa42 in 5 second toaster and kettle by F1NNTORIO

Just an electrical correction.

Combined voltage in 3 phased circuit for 230V phase voltage is 400V. For old 220V circuits it's 380V. 360V never existed.

Current in 3 phase circuit can't be just added together when using combined voltage.

However, with resistive AND balanced load (implying perfect 3 phase kettle), you can just calculate single phase current and divide by 3. So the current for 67.2kW in 3 phase circuit would be ~97A per phase.

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Stopa42 t1_j0gsnzn wrote

You are of course right. It is 230 V * sqrt(3) ~ 400 V. I don't know how I came up with the 360 V. I don't use these values very often so they are not really imprinted well in my memory. The point stays the same, although circuit breakers rated close to that value are actually commercially available so we're not that far away I think.

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