I am hoping to fit a tankless inline water heater of about 4kw under the kitchen sink.
I know it cannot run off the ring main and, as the kitchen is fully tiled, I cannot feed another cable in.
There is a cooker control unit with socket fitted, which is fed with a 6mm cable. At present there is a gas cooker and gas hob though I appreciate future occupants could change over to electric cooking.
My question is, can I have a fused spur running down from the cooker control unit to behind the units, then wire the heater into the fused spur.
I will be having a qualified electrician do the work, just hoping to find out if it can be done before paying him to say yes or no.