can anyone give me some advice please, i am trying to wire up the electrics to my brand new cannon c60dtx cooker which is duel fuel, i am fairly ok with most things diy, but i have never before seen the wiring arrangment on the socket at the back there are the usual 2 screws, for each junction etc live at the top neutral below that and earth at the bottom with like a brass piece coming out, i have never seen anything like this before, am i missing something really basic here