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Another funny from the AMD 2 draft for comment - bathrooms, arms are getting shorter.

As I peruse the AMD2  files to see what else has changed I see that the requirements for 13A sockets in a bathroom seem to have magically shrunk from 3m to 2.5m to the edge of Zone 1.

(Edit For background the 3m rule came in formally in the 17th edition - prior to that there had been a blanket ban on sockets in bathrooms since 1950, and then in the 15th edition we had a special clause added to allow sockets at 2.5m in bedrooms with an en-suite, and then part way through the 16th edition the numbered bathroom zones 0, 1,2 and 3 came in, later to be simplified to the current  0, 1, 2 and 'outside the zones'  system.)


I suspect this latest change is based on nothing very much other than the fact the rest of the planet manages them a lot closer than that and they have no issues in practice (outside zone 2, and in a location away from water and steam seems a lowest common denominator, though RCD requirements vary), rather than perhaps that hair dryers being sold with shorter cords than before, or people's ability to spread their arms is reducing  as the general population becomes more overweight.

701.512.3

..........

Except for SELV socket-outlets complying with Section 414 and shaver supply units complying with BS EN

61558-2-5, socket-outlets are prohibited within a distance of 2.5 m horizontally from the boundary of zone 1.



Personally I think this is a move in the right direction, given the small risks with RCD protection, but until it reduces to about 1.8m, it is still no use in my own bathroom ?.

  • Probably something to do with earlier regulations relating to arms reach at a maximum of 2.5m, besides other forms of accessiblility such as across two phases and that humanity has suddenly developed a sense of proportion. (well that's what somebody told me)

    Legh
  • It sounds like it's going backwards in a way - IIRC it used to be 2.5m for sockets from shower cubicles in rooms other than bathrooms.

      - Andy.
  • It is the least of your problems, unless you are competent with a Kango hammer, it might be pertinent to consult the "yellow pages" for a groundwork builder for the forthcoming regulation "foundation earthing", Your wife will be unhappy altering the carpet/parquet flooring to accommodate a (I recommend the popular "Furse") pit, to attach a rod to the reinforcing steel underneath the sitting/dining room. A nice BS 951, (have I mentioned BS)? dont tell Mr Kenyon! clip and 10 meters of green and yellow clipped to the skirting board to the meter. 

    More to come.

    Regards, UKPNZap
  • I'm aware of the foundation earthing stuff - but we already have an open thread on that  here  and it seemed better to mention the bathroom one separately. Actually my own house has no rebar in the foundations nor  an easy way to place electrodes round it, luckily it is not a new build as it already exists; so there is no need to add earthing to it...
  • https://www2.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=51713
  • Surprisingly this 500 mm will make quite a difference to me.
  • Does a distance of 2.5 m matter if you have an appliance with a lead longer than 2.5 m?
  • gkenyon:

    Does a distance of 2.5 m matter if you have an appliance with a lead longer than 2.5 m?




    That is a conversation I have had a number of times when people have a bath installed in a bedroom. I try to gently explain that they are now sleeping in a bathroom rather than the bedroom having a bath in it.


    Well, I will just buy an extension lead is the comment I get.


  • That James Bond film where Sean Connery throws the appliance in the bath is a good one
  • There are still people who oppose all socket-outlets in bathrooms, but like Sparkingchip says, baths and showers are no longer restricted to a sinlgle room in houses, some hotels, etc.


    It's also worth considering whether additional protection by RCD helps.


    Well, over the past 20 years, there have been a couple of cases in other EU countries (not in the UK) of Class II equipment falling into a bath and killing children. In one case the appliance was connected to a shaver outlet. RCDs never operated ... but a bit of common-sense logic shows RCDs would never help in that case ... Why would they, when there's no other return path than the Neutral in the case of the Class II appliance, and in the case of the shaver outlet appliance, well that's separated anyway.


    The resulting investigations, court cases etc. in those particular instances put the blame squarely on the parents for lack of supervision, and not on the electrical installation ... I wonder whether that would be the case in the UK?