FAQ
TL;DR: PIE631FB1E draws about 15 A per phase (24.6 A boost); "Requires two phases." Size phase protection accordingly and note booster is time‑limited. [Elektroda, lstela, post #19571903]
Why it matters: For Bosch PIE631FB1E owners and installers, this FAQ clarifies breaker sizing, wiring, and warranty steps to avoid trips and claims issues.
Quick Facts
- PIE631FB1E uses two phases; the third phase is unused. Factory cord is 2.5 mm²; supply is 230 V per phase. [Elektroda, lstela, post #19571903]
- Per‑phase load is ~15 A continuous; booster peaks at ~24.6 A and is time‑limited, so a 16 A fuse often holds. [Elektroda, lstela, post #19571903]
- Protection guidance: plan ~18.5 A phase current; use 20 A per phase; never put the neutral on a fuse. [Elektroda, Tumiwisizm, post #18328227]
- "Do not disconnect the neutral"; place breakers on the phases only for two‑phase feeds; 16 A per phase suits ~3 kW segments. [Elektroda, Tumiwisizm, post #18336011]
- Warranty entry by a licensed electrician is required only if you intend to claim the manufacturer’s warranty. [Elektroda, ^ToM^, #18337170]
What breaker size should I use for Bosch PIE631FB1E on two phases?
Use a 20 A breaker per phase when supplying phase‑to‑phase loads near 18.5 A. Do not place protection on the neutral. “And god forbid neutral on the fuse.” [Elektroda, Tumiwisizm, post #18328227]
Is a B16 2‑pole MCB enough for this hob?
A 16 A device can work because booster current is time‑limited. Continuous per‑phase load is ~15 A, and boosts near 24.6 A are brief. The factory 2.5 mm² lead supports about 25 A continuous. If nuisance trips occur, consider upsizing protection as allowed. [Elektroda, lstela, post #19571903]
Should the neutral conductor be protected or switched?
No. Protect only the phases and keep the neutral unswitched. “And god forbid neutral on the fuse.” [Elektroda, Tumiwisizm, post #18328227]
Can I use a 3‑pole breaker and leave one pole unused?
Yes. You can use a 3‑pole device and leave one pole unused for a two‑phase hob. “Yes it can be.” [Elektroda, Brivido, post #18336306]
Is a 5×2.5 mm² feeder cable adequate for the PIE631FB1E?
Yes. The hob’s factory cable is 2.5 mm², per‑phase current is 15 A continuous, and 2.5 mm² supports ~25 A. Short 24.6 A boosts are time‑limited. A 5×2.5 mm² feeder is adequate when installed correctly. [Elektroda, lstela, post #19571903]
How are the cooking zones split across phases?
Left zones share one phase at 3600 W (6200 W booster). Right zones share the second phase at 3600 W (5900 W booster). Expect ~15 A continuous per phase. The third phase is unused. [Elektroda, lstela, post #19571903]
Can I enable the booster on all burners at once?
No. The controller prevents enabling booster on all zones simultaneously. Left can reach 6200 W and right 5900 W in boost, not concurrently. [Elektroda, lstela, post #19571903]
How do I wire and protect this hob on two phases?
Follow the manual.
- Confirm two‑phase configuration; the third phase is unused. The spare conductor may serve as a second neutral.
- Connect L1 to Phase 1 and L2 to Phase 2; supply is 230 V per phase.
- Size protection to ~15 A continuous and time‑limited 24.6 A boosts; a 16 A device often holds.
[Elektroda, lstela, post #19571903]
Do I need a licensed electrician’s entry to keep the warranty valid?
Yes, if you intend to use the warranty. “This is only needed if you want to take advantage of the manufacturer’s warranty.” Record the installer’s details per the warranty card. [Elektroda, ^ToM^, #18337170]
What qualifications satisfy the installer entry?
SEP authorization up to 1 kV is sufficient. The electrician should note the connection date and their license number or stamp in the warranty record. [Elektroda, Tumiwisizm, post #18337108]
What’s a realistic everyday power draw for home cooking?
About 2 kW continuous is typical. A kettle on booster draws roughly 2–3 kW for around two minutes. This intermittent load profile reduces continuous stress on breakers and cabling during normal use. [Elektroda, Barthezz1976, post #18330322]
Is the PIE631FB1E a 400 V three‑phase appliance?
No. It operates at 230 V per phase with a star‑like internal link, and the third phase is unused. The spare phase conductor may serve as a second neutral per the manual. [Elektroda, lstela, post #19571903]
Can I run the PIE631FB1E from a single phase?
No. This model requires two phases, and the third phase is not used. Single‑phase operation is not described in the referenced configuration. [Elektroda, lstela, post #19571903]
