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Discuss Large oven tripping RCD in the Electrical Forum area at ElectriciansForums.net

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Hi all.

Looking for a bit of advice.
Customer has a new large induction rangemaster cooker with a total power of 14.8kw.
Currently on a Hager board with a 50a b mcb and an existing 6mm cable.
As soon as oven was switched on it tripped the RCD.
Taking diversity into account the cable should be fine.
Is the breaker too large?
Insulation resistance test comes back fine.
Should I try a smaller breaker?
The oven has the potential to pull 60 + amps and they’ve said they want all 3 ovens on and the hob so I’m wondering if it needs it’s own 63a RCD and a 10mm?

I don’t want to stick it on a 40a and have issues later on.
I guess there’s also the potential that the element had gone as well?
 
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Last edited:

richy3333

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