RCD selection for induction cooker
Induction cooker 7400 W, 3x6 cable 9 meters long. According to the formula from the PUE, I get the result 13.69 * 3 = 41. RCD by 30 is small, it will not work to break into groups, it will not work to separate a separate group into 1 electrical appliance. What do you advise?
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The RCD and the circuit breaker must be selected according to the load current of the electric stove, and the RCD must be designed for a larger current than the circuit breaker, since the circuit breaker does not turn off immediately when the rated current is exceeded, it will work for some time (depending on the load) until The thermal release will trip. An induction cooker needs a separate wiring line that will withstand the load of this appliance - there are no other options. If there is no line capable of withstanding such a load, then you cannot operate the induction cooker.
After all, I wrote that a separate line and cable 3 x 6 is 9 m long, I understand how to choose a circuit breaker, it is not clear which RCD to choose if you calculate the leakage current it turns out 41 RCDs to 30 cannot be set according to the PUE how to choose a RCD and not a circuit breaker
If we are talking about the leakage current, then more than 30 mA does not need to be set, since then a person will not be fully protected from the effects of current. That is, you select 30 mA differential current. And the rated load current, as he wrote in the previous comment, needs to be chosen more than the rated current of the machine so that the RCD does not fail in case of overload. For example, an automatic machine for 32 A, and an RCD for 40 A.