Need some advice. I am taking an electric shower out of my bathroom as we have had a combi boiler fitted and i will be running a new shower from that. The question is can i run a extractor fan off the old electric shower wiring. I know that this wiring runs from the consumer board with a 45 amp fuse (which would not be safe for the fan) to a pull switch in the bathromm. Is there a way to down grade this to make it safe to run the fan from and is it a job i could do. Thanks for any help. .