Submitted by **F1NNTORIO** t3_zmisk3
in **Futurology**

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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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