Hi, total novice here but I really need help with this. Any input would be much appreciated. We recently moved house and the cooker in said house is ancient and costing us a fortune, so has to be changed so the existing cooker is wired to a double or single poled switch? I think? See picture.. The cooker we have in mind is under 1kw and instructions state to be wired to a 13a spur. Is the switch that's there OK and I can connect it using this existing (very thick) cable? Or do we need to put in a new spur? From what I've read the switch that is there is for heavier usage cookers but is it OK and safe to wire a new cooker too? Thanks in advance guys