FCU etc. in Bathroom

[telectrix]

fitting FCU in bathroom, for 600w element in towel rail . Fed from ring main, which is RCD protected. No probs. so far. Prob. is, cust. wants a vanity unit with integral shaver socket and light. If I supply this from the upstairs lighting, I will have to RCD that circuit as well to comply. The problem is, I can't RCBO the upstairs lights as the landing light is split, L from downstairs and N from upstairs.Could poss fit 2nd RCD in board, but it would be a pain. My solution would be to feed the vanity unit from the load side of the FCU so all my work complieswith 17th. If I do no work on the lighting, am I right in assuming that I don.t have to bring the lighting up to 17th. i.e. all circuits in a bathroom have to be RCD protected.701.411.3.3. Both towel rail and vanity unit are outside zone 2. Comments appreciated.

 

[swparksey]

Just put another FCU in for the Vanity mirror, problem solved.

 

[telectrix]

so, i can leave the lights alone?

 

[swparksey]

Yes, your not working on them so they are not your responsibility.

If you mess with the lights you will have to RCD them, stay clear of them.

 

[telectrix]

that's what i thought . just needed 2nd opinion. thanks.