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  1. John321
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    John321 New EF Member

    Location:
    Blackpool, England
    I'm currently wiring an outside light with a built in photocell and I can't figure out what's going wrong. It's wired from a switch with a 3 core.

    At the switch, I've connected the grey(blue) neutral to the other neutrals and I've connected the black(brown) live to the common lives.

    At the light there is a connector block. And this is how I connect it
    Red/Brown - Nothing I guess this is for slave units
    Live - Black(brown)
    Earth - Earth
    Neutral - Grey(blue)

    And put the spare brown on it's own connector block.

    For some reason, the RCD keeps tripping and I can't figure out why. Any ideas? Cheers
     
  2. Vortigern
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    Vortigern Electrician's Arms

    Location:
    England
    Business Name:
    F.H. Electrical
    Post a photo please.
     
  3. Richard Burns
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    Richard Burns Trusted Advisor

    Location:
    Cambridgeshire
    Business Name:
    Richard Burns
    Welcome to the forum, if it is wired as you say and there are no loose strands of cable bridging terminals then I would say you have a light fitting with an earth fault.
    Are you sure the neutrals at the switch are neutrals and the permanent lines are lines?
     
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  4. telectrix
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    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    as above ^^^ probability is that there is not a Neutral at the switch.
     
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  5. John321
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    John321 New EF Member

    Location:
    Blackpool, England
    Thanks for the replies, I appreciate it. The lights are wired to the switch, there is a bunch of neutrals at the switch and I got 240 between the L+N.

    You think the photocell could be faulty?

    Cheers
     
    • Bad Spelling Bad Spelling x 1
  6. DJ Ovengloves
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    DJ Ovengloves Regular EF Member

    Location:
    Purley
    You mean 230 don't you? :)
     
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  7. John321
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    John321 New EF Member

    Location:
    Blackpool, England
    Roughly yea haha :)
     
  8. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    Could be 243V or 247V or .....
     
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  9. Pete999
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    Pete999 Trusted Advisor

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    Location:
    Northampton
    or244V 0r 248V
     
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  10. davesparks
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    davesparks Trusted Advisor

    Location:
    guildford
    No, the voltage in the U.K. Is not 230V
     
  11. Pete999
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    Pete999 Trusted Advisor

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    Location:
    Northampton
    I know Dave, it's 1239 in my place
     
  12. DJ Ovengloves
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    DJ Ovengloves Regular EF Member

    Location:
    Purley
    I know, but when quoting "mains" it should be stated as such imho. :)

    Edit- in case sums get done incorrectly. For what it's worth the voltage at my house sits at 243 most of the time when I'm doing monthly checks on my equipment.

    ...don't get me started on "low voltage"

     
  13. Pete999
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    Pete999 Trusted Advisor

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    Location:
    Northampton
    What do you mean DJ "Don't get me started on low voltage" I'm interested that's all
     
  14. DJ Ovengloves
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    DJ Ovengloves Regular EF Member

    Location:
    Purley
    Now worries Pete, its tHe use of the phrase "low voltage" for 12 volt lighting, when of course it's elv.

    I know it's really anal, pretty much everyone knows whet is meant, but the odc in me shivers every time I see I being misused.
     
  15. Pete999
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    Pete999 Trusted Advisor

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    Location:
    Northampton
    T
     
  16. Pete999
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    Pete999 Trusted Advisor

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    Location:
    Northampton
    Thought that would be something like that DJ, not anal at all, I'm a pedant when it comes to calling a RFC a ring main, I have go into a dark room sometimes and take a chill pill.
     
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  17. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    I'm afraid I quite often say low voltage when I should extra low voltage, and voltage when I should say low voltage, ring main when I should say ring final and light bulb when I should say lamp. The list goes on. I am trying to improve on my grammar & spelling, unlike some I have to say DJ :rolleyes:
     
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  18. DJ Ovengloves
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    DJ Ovengloves Regular EF Member

    Location:
    Purley
    Oh dear, a roll eyes....another one of "my things" :)

    Ignore the spelling and grammar (there were a lot of commas and I have massive sausage fingers) as I was in a meeting pretending not to be messing with my phone when posting.
     
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  19. davesparks
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    davesparks Trusted Advisor

    Location:
    guildford
    Why should it be stated as such when that is only a nominal value and not a real world value? Blindly following what is written in a book and ignoring the real world is ridiculous.

    The calculations will almost certainly be done incorrectly if 230V is used.
     
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  20. DJ Ovengloves
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    DJ Ovengloves Regular EF Member

    Location:
    Purley
    No, the calculations will be "correct" according to the powers that be. Whether that stands up in reality is a different matter.

    Jesus, as I said (with a bloody :) ) it's "simply one of my things". Sadly I really do get the impression that if your not "part of the gang" on here you get swatted for daring to post.

     
  21. Pete999
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    Pete999 Trusted Advisor

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    Location:
    Northampton
    Thought that would be something like that DJ, not anal at all, I'm a pedant when it comes to calling a RFC a ring main, I have go into a dark room sometimes and take a chill pill.
    Didn't want to post the original
     
  22. Rpa07
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    Rpa07 2000 posts - only 46379 behind Telectrix! Electrician's Arms

    Location:
    Bristol
    Business Name:
    Ebenezer electrical
    The OP The OP!
    To the OP - as Vortigern has requested - photo of both ends of cable please.

    Carry on bickering gentlemen!!
     
  23. davesparks
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    davesparks Trusted Advisor

    Location:
    guildford
    What powers that be?
    It is far more important that it is right in reality than complying with a theoretical nonsense.

    This daft approach leads to situations like idiots using 240V power ratings in calculations with a voltage of 230V and getting incorrect current ratings.
     
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  24. Pete999
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    Pete999 Trusted Advisor

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    Location:
    Northampton
    Don't be daft Mate, chill out banter is the spice of life, you must have come across it before surely, take no notice, it's all in the best possible taste
     
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  25. DJ Ovengloves
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    DJ Ovengloves Regular EF Member

    Location:
    Purley
    How Cupid stunt got past the BBC censors I don't know.

     
  26. Pete999
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    Pete999 Trusted Advisor

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    Location:
    Northampton
    Now you're getting the drift DJ give as good as you get.
     
  27. DJ Ovengloves
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    DJ Ovengloves Regular EF Member

    Location:
    Purley
    The IET and I agree with you, but I refer you to my "hissy fit" post for context.


     
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