Is there not a wiring diagram on the "cooker" somewhere? Look for it on the plate that covers the terminal block (your picture). On the back of the cooker? Or the manufacturer can tell you.
6mm is a large wire, looking at my ruler. How do you know you need this size? What is the current requirement for this cooker?
6mm is a large wire, looking at my ruler. How do you know you need this size? What is the current requirement for this cooker?
