Fused spur outlet

Discussion in 'Electricians' Talk' started by flateric, Feb 24, 2015.

  1. flateric

    flateric Well-Known Member

    I did a consumer install today whilst testing the power shower feed I removed the spur to find two earth terminals, one with the normal earth symbol with the incoming earth connected the other with the load earth connected marked SE + the normal earth symbol. but there was no continuity between the two, hence no r1 r2 at the pump I did the obvious and connected them together to get the result I needed ???????????? Any info on the SE connection.
     
  2. FatHands

    FatHands Well-Known Member

    hi flats,
    are you saying:
    1) there was no continuity between the pump CPC and spur
    or
    2) there was no continuity between the spur and consumer unit?
     
  3. spinlondon

    spinlondon Screwfix Select

    I would expect the 'S E' to stand for either Safety Earth, or perhaps Second Earth?
    Which make is the FCU?
     
  4. flateric

    flateric Well-Known Member

    Not sure what it was I should of taken a pic
     
  5. flateric

    flateric Well-Known Member


    When I opened up the spur there was an incoming earth in one terminal and the out going earth was in the other, but between the two earths on the spur it was open circuit hence no r1 r2 at the pump
     
  6. Mr. Handyandy

    Mr. Handyandy Screwfix Select

    Supplementary earth?

    Perhaps designed to have somewhere to terminate unneeded earth cable in the case of double-insulated appliances, or choose to connect either or both to backbox lug?

    Just throwing ideas!

    Mr. HandyAndy - Really
     
  7. flateric

    flateric Well-Known Member



    I can understand the mistake of the person who installed it I only found it by luck :)
     
  8. Mr. Handyandy

    Mr. Handyandy Screwfix Select

    I would imagine even an electrician might 'assume' they are linked!

    Mr. HandyAndy - Really
     
  9. nigel willson

    nigel willson Screwfix Select

    assume yes,but testing would have shown it up!! never assume
     
  10. Mr. Handyandy

    Mr. Handyandy Screwfix Select

    Absolutely.
     
  11. flateric

    flateric Well-Known Member

    Two earth points in one spur I am sure we would all assume :D
     
    Rulland likes this.
  12. JP.

    JP. Screwfix Select

  13. flateric

    flateric Well-Known Member

    I have been on a call out today and met our friend again same thing incoming earth in one terminal out going in another result outside socket no earth [​IMG] Bottom contact marked SE top E. the thin red wire is connected to the SE
     
  14. seneca

    seneca Screwfix Select

    That's an rcd spur isn't it Eric? I seem to recognise it as such.
     
  15. seneca

    seneca Screwfix Select

    I've always put both earth wires into the same hole when I've used those, (not the hole with the red wire in it) although I've never checked I've assumed the red wire is a functional earth for the rcd, maybe to operate the test function by earthing the neutral maybe?
     
  16. flateric

    flateric Well-Known Member


    I have come across this twice in the same week sen where both earths were used and the result was no valid earth at the end point. But at the end of the day it came down to lack of testing when job completed :(
     
  17. flateric

    flateric Well-Known Member

    I thought the functional earth was a cream colour sen
     
  18. seneca

    seneca Screwfix Select

    I think that's a telecoms thing Eric? I've never seen cream earth conductors anywhere but on telecoms systems but I could well be wrong.
     
    Last edited: Mar 2, 2015
  19. flateric

    flateric Well-Known Member

    Some of the m.e.m boards had them in sen for the RCD
     
  20. seneca

    seneca Screwfix Select

    Ahh yes Eric, come to think of it rcbo's do too!
     

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