Ok. not even if fused down? How do we go about having the fan only come on when the shower is going to be used.
dont foget the isolater /rcd/notification
It's a B****** getting a 10mm cable into the terminal of a switch by it's self let alone with a 2.5mm as well.
A shower fan should in my opinion run on for a while after shower has been used sto help remove the steamy atmosphere which leads to condensation.
Bathroom fans are 1.5mm not 2.5mm