Hello, I'm contemplating installing a shaver socket in my bathroom, which I'll power from the lighting circuit. I want to be able to power a 45W oral irrigator from it. I notice most of the shaver sockets are rated at 20VA, no good for my 45W appliance. Is this because of the regulations limiting the amount of power allowed in 'zone 2', or do shaver sockets with bigger transformers than these 20VA ones exist? Thanks for your help. Craig.