The relay fuse on my Kia Rio has blown several times when steering turned on full lock?

On several occasions my Kia Rio engine has cut out after the relay fuse has blown. I am convinced this is caused when I turn the steering wheel on full lock, ie turning into a parking space or into a driveway or any tight manoeuvre that requires full turns of the steering wheel. I can go months without it happening and then it can happen twice in a week. Is it to do with the powered steering or maybe applying the brake at the same time as the steering. Anyone any ideas?