NOT KNOWN DETAILS ABOUT OVAL CONDUIT

The complete plan is for me to speed up on a rewire, so I am just trying to find guidelines for getting the cable in the conduit?Will be the oven huge & industrial, just asking yourself why you require 6mm2 cable, most domestic ovens will be wired in 2.5mm2 or 4mm2.Perfect, thank you a lot of. What precisely I was trying to find. Sure I exploit TLC