Bosch PIE631FB1E 7.4kW Induction Hob: Protection Assignment - B16 2p Overcurrent Fuse Suitability

Hello.
I bought an induction hob and now the question arises what protection to assign to it? The hob has a maximum power specified in the manual 7400W. I want to power it with two phases. Will a B16 2p overcurrent fuse be good for this type of connection? Can it give normally 3P where the 3rd N line will also be disconnected in case of overload?

The cable from the switchgear is 5x2.5mm2

I am asking for advice and suggestions.
Thank you and best regards.

wsmpw wrote:

Will a B16 2p overcurrent fuse be good for this type of connection? Can it give normally 3P where the 3rd N line will also be disconnected in case of overload?

Once you do, give it 20A, because there will be about 18.5A on the phase-to-phase (the same current) plus longer work, at least these 20A. And god forbid neutral on the fuse. As for the cross-section of the wire

wsmpw wrote:

The cable from the switchgear is 5x2.5mm2

a little. Four (4mm2) would be useful.

Rarely will you exceed 2 kW of constant load on induction.
I only use the booster for the kettle, so it's 2-3 kW literally for 2 minutes or less depending on how much water is in the kettle.
1 phase and 2.5mm is enough.
When you run a gastronomy, it's like a friend with a cable above 4mm

So what kind of protection should you give? B16A 3 lines ?

@wsmpw do not disconnect the neutral. If you want to power the hob with two phases, put a circuit breaker on the phases only. I do not know what connection the plate has inside, but if you power it from phase to phase, a 16A switch (per phase) for these 3kW is enough.

It seems to me that inside it is so that 2 coils are powered from 2 generators, i.e. 2 generators for 2 pairs of burner coils.
and the connection is for 2 phases, i.e. as if each "power board" has 2 coils (burners) to be operated from one phase.
I'm just still wondering how the overcurrent 3-pole dam will be unused.
It can be like that?

Yes it can be.

wsmpw wrote:

I bought an induction hob

Have you checked the warranty card whether an electrician's entry is required to make the connection?

@zhudomel that's the information there.
I think SEP licenses up to 1kV will suffice.

wsmpw wrote:

I think SEP licenses up to 1kV will suffice.

They're enough. If only the electrician entered the date of connection and the number of his licenses (if he does not run a business in this area, if it is carried out by a stamp with the number of licenses).

zhudomel wrote:

wsmpw wrote:

I bought an induction hob

Have you checked in the warranty card whether an entry of a licensed electrician about making the connection is required?

However, this is only needed if you want to take advantage of the manufacturer's warranty. If the warranty will not be used (for some reason), of course, you do not need to fill it out.

What board is it, name the manufacturer and model. The board is probably powered by 2 x 230 V.

PIE631FB1E is a Bosch board, not Amica.
Requires two phases. The third phase is not connected or used. The factory cable attached to the board has a cross-section 2.5mm sq .
According to the manual, the unused phase wire is used as the second neutral, which suggests that it is a "star" connection (a bit lame), and the system is powered by 240V and not 400V. I guess the left fields ("burners") draw current from one phase, and the right ones from the other.
Left and field power is 3600W (6200 in booster mode)
The power of the right fields is 3600W (5900 booster)
This means the maximum continuous current on one phase 15A (24.6A in booster mode) .
It is not possible to activate the booster mode for all burners at once.

The booster mode is time-limited, so a 24.6A instantaneous current will not blow a 16A fuse.
The maximum continuous current for a 2.5mm cable is 25A, so it's also normal here.