Hello all , can you help , my son just moved from a flat to a house the cooker was working ok in the flat but on wireing up in the house a problem has developed where by its ok with the clock is on but as soon as he trys to use grill or oven / hob it trips out , the wireing is fairly new so on the usumption that its ok what could have been disturbed on the cooker !! many thanks for any replys .. mark