Fuse tripping with new double oven?

I just install a double oven using a 10mm cable back to a 32amp breaker. There is an cooker isolation switch in between and a connector between the inbuilt cooker cable and 10mm cable.

Everytime I put the power on from the isolation switch it trips. I realised it could be the cooker but I was also wondering if this could be because the breaker is 32 amp.

The inbuilt cable from the cooker is a small gauge to that of the 10 mm.

Any help would b appreciated.

Phil
May 2009