please check my calculations

[damien1]

hi guys i did my 17th edition in 2008 and ive not done much in the trade since then ide be most gratfull if someone would please check my calculations

1 cooker hob rated at 5.7 kw
1 oven rated at 4.8 kw

so total is 10.5 kw / by 230v gives me 45 amps

after doing the diversity calculation i come up with 20 amps so would i be right in thinking to put a 32 amp breaker in or could i use the existing 40 amp breaker all im doing is moving the existing cooker radial

and im using 10mm cable

thanks for your help guys

 

[telectrix]

the MCB is there to protect the 10mm cable from overload, so a 40A is well adequate.

 

[damien1]

cheers mate thanks for that i just needed reasuring