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Electrical

circuit for induction cooker

Anonymous user 01/03/2024 - 2.57 PM

Is an independent circuit with a 4mm cable protected by a 32 amp breaker enough for a 19 KW cooker? That is the current configuration in my house, but I am bit surprised. The electrician that I checked with told me that applying diversity it will be fine. According to him 19KW gives 19000/230 = 82.7 amp, but of these, we should only take into account 10 amp + 30% * (82.7 - 10) = 31.8 amp, which is just under the 32 amp. The 32 Amp circuit is only used for the cooker. Is he right?

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4 Answers

Anonymous user

Run a separate circuit from the fuse box for the cooker otherwise you always gonna have problems with the Shortcuts fit it on with a 32 Amp breaker

Answered20 January 2022

SKR Electrical services

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Littlehampton

hi, 19KW seems far to powerful for a domestic cooker, across a 3 phase supply no problem but a standard single phase supply is 100A max, you can take diversity into consideration but to be on the safe side, 6mm(given the install method) or 10mm on a 50a MCB/RCBO would probably suit it better

Answered20 January 2022

Internal Repairs

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Epsom

19kw? Are you sure? 4mm protected with a 32amp MCB will be fine for a cooker radial.

Answered21 January 2022

Anonymous user

Traditionally, 6mm2 T&E cable is used for cooker circuits on a 32A overcurrent device. 19kW is a mighty big appliance for a domestic situation. It could be a commercial oven thats been installed? Personally, I would not approve of 4mm2 being used for such a high load circuit, diversity or no diversity. That equation is used for domestic ovens, not commercial ones, and is only an approximation. Why a 4mm2 cable was installed is a mystery. It certainly would not be considered as standard or acceptable practice.

Answered23 January 2022