washing machine keeps triping my fuse box?

hi my boshwff 2001 trips my fuse box as soon as the water enters. if i leave it overnight then the machine will run for a couple of minutes then will trip my fuse box, thereafter as soon as i swith the machine on it trips straight away. i can not see a leak but i guess this is the problem but i am not sure an dont no were to start looking, please help.