Thanks for your prompt replys people. The bathroom is upstairs and the transformers will be in the attic space outside the 3.25M zone. Because of the height of the ceiling the 12V down lights will be outside of the 3.25M zone as well. There is no RCD protection in the house. I just thought B&Q...
I have just been to B&Q and looked at their 12V bathroom downlights. I thought that they would be O.K. but B&Q recommend that I also fit an RCD! Surely the fact that they are low voltage makes them super safe and negates having to double up and use an RCD. any guidence would be appreciated. thanks