size of mcb for cooker

[aldino]

i've noticed that my built-in cooker is wired to a 50amp mcb in the c/u.i think the suggested size for it is 20amp.what effect if any will this have on the circuit protection

 

[ban-all-sheds]

Provided the cable is thick enough, i.e. 10mm² or greater, then it will be OK.

 

[aldino]

when you say too much is better.does that mean the higher rated the mcb, the better the protection

 

[andy]

no, the breaker must be rated lower than the cable.


if the cooker only needs 20A, then downrate MCB to 20A

 

[ban-all-sheds]

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http://www.diynot.com/forums/viewtopic.php?p=81696#81696
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[kai]

If the Fuse or Breaker is far too high for the appliance, your appliance will not be protected adequately. As suggested, swap out the breaker for a B20 amp one, and you should be safer.