I'm looking to for a shaver socket in the bathroom. It'll pretty much be exclusively for charging toothbrushes. I'm trying to get a handle on the current regs. Does it still need to be a standard transformer style shaver socket and are these OK for toothbrushes? I have read about some getting a bit warm. If its not necessary than I'd rather fit one without but will obviously comply if it is. Its going outside zone 2 ("zone 3"), but will be within 3m of a zone 1. Its going on lighting circuit which has a standard 30mA RCD if that makes any difference. If it does need a transformer are any better than others?