Hi , I am wiring in a 2.4kw oven into a 6 mm cooker circuit (the hob is gas ) . The oven doesn't come with any flex , but does suggest 1.5 3 core 90degree flex (16amps ) ,so no problem fit with 16amp mcb. My question is if at a later date the hob was changed over to electric then the MCB size goes up to say 32amp , then how is the 1.5 flex to the oven protected