HI, Just aquired a fan device that fits in roof space to blow air through ceiling to stop condesation in house ( preparing for winter when all teh windows get shut). It comes with a 1 amp fused spur and have been told it could go on to nearest lighting circuit in roof space. Had an electrician friend of a friend in who isnt fully qualified yet who didnt want to fit it for me unyil he had checked up on what his obligations were. Said my installation may neeed a check over as my earths were only 4 mm and should be bigger for a TNS installation. Alos he was not happy as my lights are seem are on 15 amp fusewire circuit when it should be 5. He put a 5 amp wired fuse in and it blew. I am back on a 15 amp fuse at themoment while I work out what to do. He says I need checking out by someone more experienced and he shouldnt fit my fan till I do so. Is he being silly, overcautious or is he right? I cant afford a rewire this year and fan is on a 1 amp fuse. Could this be a ploy for more work? An opinion would be appreciated.