Bosch PIE611F17E Induction Hob 7kW: Upgrading Connection Capacity from 5kW, 1-Phase to 3-Phase

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#31 14136778 16 Nov 2014 14:30

Anonymous Anonymous

Anonymous

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Post #31
14136778 16 Nov 2014 14:30

Hello
Currently, all household appliances (including electric cookers) produced for the EU market are 230V. These household appliances, the current consumption of which exceeds 16A, are divided into modules that enable power supply from more than one phase.
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#32 14136789 16 Nov 2014 14:33

freebsd freebsd

Level 42

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Post #32
14136789 16 Nov 2014 14:33

marek majchrzak wrote:
The only thing left is signing a new contract, allocating power, replacing the meter ... a bit of breaking up and modernizing the network at home and then it will go downhill.

Read my comprehension post. You can not do it, the hob has the appropriate settings (page 12 of the manual) and can consume the set maximum power (in 1kW step). Anyway, the degree of difficulty is different for everyone.

Gregory_bg wrote:
nothing about the power scheme

The plate has an "Assembly manual", where it is:
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#33 14136960 16 Nov 2014 15:33

Gregory_bg Gregory_bg

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Post #33
14136960 16 Nov 2014 15:33

Now that's different. I did not find this schematic; )
#34 14137044 16 Nov 2014 16:02

retrofood retrofood

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Post #34
14137044 16 Nov 2014 16:02

The topic is explained on the forum many times, and here is another attempt to do a doctorate. I close.
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Topic summary

The discussion revolves around the installation of the Bosch PIE611F17E induction hob, which has a power rating of 7 kW. The user is currently on a 1-phase electrical system with a total connected load of 5 kW and is seeking advice on upgrading to a 3-phase system to accommodate the hob's power requirements. Responses indicate that a 3-phase system is necessary for optimal performance, as a 1-phase connection may not support the full load, especially when all cooking zones are in use. Suggestions include applying for an increase in connection capacity and ensuring proper wiring and circuit protection, with recommendations for a dedicated circuit for the induction hob. The conversation highlights the importance of understanding electrical specifications and the implications of connecting high-power appliances to existing systems.
Summary generated by the language model.

FAQ

TL;DR: A 7 kW hob draws about 30 A on 230 V, and “You need a 3-phase system” [Elektroda, bearq, #14135404; #14135536]. Without a supply upgrade, breakers will trip. Why it matters: Cooking on full power becomes impossible and warranty can be voided.

Quick Facts

• Bosch PIE611F17E total load: 7.2 kW (spec) [Bosch Manual]
• Current on single phase: ≈31 A @ 230 V [Elektroda, 14135536]
• Typical Polish single-phase contract: 5 kW / 25 A max [Elektroda, 14135306]
• Recommended hob circuit: 5×4–6 mm² cable + 25 A breaker [Elektroda, 14135404]
• Tauron capacity-upgrade fee: 113 PLN per added kW [Tauron Tariff 2024]

Can the PIE611F17E run on a single-phase supply?

Yes, but only if the line can deliver ≥31 A. Most flats have 25 A limits, so the hob will trip protection or dim lights [Elektroda, #14135536; #14135562].

Why do experts recommend three phases for this hob?

Distributing 7 kW over two or three phases cuts current per conductor to ≤16 A, fitting standard breakers and avoiding voltage drop [Elektroda, bearq, post #14135404]

What happens if I connect it to 1 × 25 A anyway?

Running all zones at max will exceed the 25 A main fuse; the supply disconnects, leaving you without power mid-cooking [Elektroda, 14135562]

How much current does 7 kW draw at 230 V?

Power ÷ voltage = current: 7200 W / 230 V ≈ 31 A [Elektroda, 14135536]

My block was built in 2013—are three phases already in the riser?

Modern Polish blocks usually run five-core cables in shafts, but many flats still receive only three cores; verify at the meter cabinet before planning [Elektroda, 14135610]

Which cable size and breaker should feed the hob?

Use 5×4 mm² Cu (min.) with a 3-pole 25 A C-curve breaker; 5×6 mm² gives extra margin for long runs [Elektroda, 14135404]

Can I limit hob power instead of rewiring?

Yes. In settings menu (parameter c7) you can cap total load in 1 kW steps, e.g., 3.5 kW, but cooking speed drops noticeably [Elektroda, 14135657]

Is there an edge case where even three phases fail?

If phases are badly balanced—e.g., oven + hob on same phase—one conductor can still over-load and trip; keep loads spread evenly [Elektroda, 14135555]

How much does increasing contracted power cost?

Tauron charges 113 PLN per additional kW plus a new three-phase meter (~200 PLN installation) [Tauron Tariff 2024].

Three-step: filing a power-upgrade request

Download “Wniosek o Zwiększenie Mocy” from your DSO site.
Fill desired power (e.g., 3 × 16 A = 11 kW) and attach property title.
Submit online or at customer centre; expect a revised contract and meter swap within 30 days [“Tauron Process Guide”].

Does 400 V on the switchboard mean I already have 400 V supply?

No. The board marking only states insulation rating; actual supply can still be single phase [Elektroda, 14135404]

Are lower-power induction hobs (≈3.7 kW) usable on 16 A circuits?

Yes; 3.7 kW equals 16 A at 230 V, matching a B16 breaker. You’ll have ~2 kW left for other loads [Elektroda, 14135648]