3 phase socket
I am in the process of getting a new gas cooker, which will need a power supply to run the ignition and oven light. There is a three phase socket, which was probably used to run an electric oven some years ago, although the actual socket is a relatively new one, put in by the electrician when I had some rewiring done. I imagine that the cooker will come with a normal three pin plug. Could I buy a three phase plug and just wire in one of the phases, or should I get an electrician to come and replace the 3 phase socket with a normal socket? I should be grateful for any advice. The socket has 3 round holes across the middle, one round hole at the top, and a rectangular hole at the bottom. I'm not sure what's what, but I could probably find out.