closing tag is in template navbar
timefactors watches



TZ-UK Fundraiser
Results 1 to 9 of 9

Thread: Socket switch tripping RCD

  1. #1
    Master IAmATeaf's Avatar
    Join Date
    Nov 2011
    Location
    NW London
    Posts
    4,599

    Socket switch tripping RCD

    Wondering if somebody might be able to explain. I had a socket in the office that would randomly trip the RCD when flicking the switch off.

    The socket has now been replaced but something strange that Iíve noticed which I donít understand. That socket was used to power my laptop and a screen, with the old socket when I switched it off the screen led would go off after around 10-12 seconds.

    With the new socket it now goes off as soon as the socket is switched off.

    Could the old socket have been arching for those 10 or so seconds? I opened it up out of curiosity and apart from some blackened switch contacts there was nothing else that I could see.
    Last edited by IAmATeaf; 21st January 2022 at 12:44.

  2. #2
    Master
    Join Date
    Sep 2004
    Location
    West Sussex, United Kingdom.
    Posts
    7,316
    Quote Originally Posted by IAmATeaf View Post
    Wondering if somebody might be able to explain. I had a socket jn the office that would randomly trip the RCD when flicking the switch in it off.

    The socket has now been replaced but something strange that Iíve noticed which I donít understand. That socket was used to power my laptop and a screen, with the old socket when I switched it off the screen led would go off after around 10-12 seconds.

    With the new socket it now goes off as soon as the socket is switched off.

    Could the old socket have been arching for those 10 or so seconds?I opened it up out of curiosity and apart from some blackened switch contacts there was nothing else that I could see.
    Probably just a sticky switch. Especially if there was blackening it meant that there was arcing going on which could account for flow not stopping immediately switch thrown

  3. #3
    Craftsman
    Join Date
    Sep 2014
    Location
    Essex
    Posts
    927
    One possibility, the old switch was single pole (only broke Line), the new socket switch is double pole (breaks both Line and Neutral)?

  4. #4
    Master IAmATeaf's Avatar
    Join Date
    Nov 2011
    Location
    NW London
    Posts
    4,599

    Socket switch tripping RCD

    No the old was a double pole/throw as I opened it up hoping that I would see melted bits

  5. #5
    Master IAmATeaf's Avatar
    Join Date
    Nov 2011
    Location
    NW London
    Posts
    4,599
    Well things got strange! Noticed over the last week that sometimes the monitor immediately powers off but other times the power led in it stays lit for some 10 seconds before slowly dimming.

    No idea why it behaves differently on some days?

  6. #6
    Master IAmATeaf's Avatar
    Join Date
    Nov 2011
    Location
    NW London
    Posts
    4,599
    Ok i know that Iím talking to myself but as this was driving me mad I wanted to get to bottom of it.

    Turns out the monitor delay in switching off is nothing to do with the original problem and replacing the face plate has fixed the random tripping of the RCD.

    The monitor and how it powers off, so immediately or slowly ebbing away after 10+ seconds is all to do with what mode the monitor is in. So it was being used and the LED indicator on the front is green then switching off the power would result in the green LED going off as soon as the power is switched off. If however it was in standby/power save mode, the LED would be orange/amber and in this case the power would slowly ebb away.

    Phew, glad I figured it out as at the back of mind I was wondering if there was/were other issues with the ring

  7. #7
    Master blackal's Avatar
    Join Date
    Mar 2012
    Location
    Scottish Borders
    Posts
    5,695
    Makes sense!

  8. #8
    Craftsman
    Join Date
    Sep 2014
    Location
    Essex
    Posts
    927

    Socket switch tripping RCD

    Itís that kinda thing that keeps you awake at night!

  9. #9
    Makes sense once youve explained it. Bet you are pleased to have got to the bottom of it!

    Sent from my M2101K7BNY using Tapatalk

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Do Not Sell My Personal Information