trip

  1. B

    UK RCD vs MCB trip

    Evening everybody, I’m wondering if someone wouldn’t mind answering a question for me about RCDs. I had a water pipe burst behind my washing machine this evening, and once I’d isolated the leak I noticed the sockets had tripped. When I went to reset the breaker, I noticed that it was the RCD...
  2. K

    Protection against open/loose neutral?

    Hello friends, is there such a thing as a "smart meter" that I can install on my backwoods house that will trip if it detects a loose/open neutral? If so, where can I get one? Thanks very much
  3. N

    Why would spike lights trip an MCB as if a dead short is present ?

    Just finished installing 20 x spike lights in a customers front garden. 2.5mm SWA ran from existing junction box feeding existing fence lights. All pulling no where near 1A in total. When all connected and wiring tested, went to switch on MCB and it popped. Rendering the MCB useless as if L-N...
  4. RutlandFox

    Modern wiring help rcd trip

    Hi all. Newbie please be gentle... My daughter in law moved into a new [2007] build. All socket circuits 20A radial MCB. One socket circuit trips rcd intermittently when the Wi-Fi router psu plugged in. Psu is double insulated and pat tests ok. Radial tests out ok with 50M ohm at 500v. Nothing...
  5. M

    Intermittent mcb trip electric gate

    Hi, just registered, I qualified in 1973 and and not done much electical work for the past 30 odd years but I obviously have grasp of the theory. I have an intermittent mcb tripping on my electric gate, which I installed. (All electric no hydraulics) The mcb will trip in any weather...
  6. J

    Am I liable to pay

    I rent a property in the UK. All of the sockets in my house were tripping, even when all sockets were switched off. An electrician came out, sent by the estate agent who manages the property. They determined it was an appliance of mine that tripped the power. He said something about why the...
  7. B

    RCD trip time greater than 300ms

    Got sent this, RCD Failed x1 greater than 300ms maybe if they changed the supply at top of RCD, currently have neutral on the left and line in the right , also the RCD is fed from 63Amp MCB is that all good just feeding an RCBO 30ma board
  8. M

    Square D rcd wont trip with my tester

    Hi guys wondering If anyone can shed some light either through knowledge or experience of the same problem. I have a Megger MFT 1731. Whenever I come to square D type rcds my tester doesn't trip them. I try it on doing the manual settings for 1x and 5x and even the auto. Ramp tests won't...
  9. B

    RCD won’t trip help needed

    TT system, have upfront 60947-2 with added on 61008 with mA and ms settings, now I’m getting Zdb of 22.9 ohms and Ka of 4.0, now the RCD can be what ever I set it to but I’m struggling, I’ve set it to 300ma and 300ms but can’t seem to get it to trip? I also have a split phase supply so have L1...
  10. spud1

    Can I calculate how fast an RCD should trip?

    Hi all. Been bugging me. I think there is a way to calculate how fast a particularly rated RCD should trip (rather than measuring) but I can't remember how to do it ? e. g. If I was designing an SWA submain fed from a TT earthed installation and I needed to install say a 300mA TD RCD to...
  11. A

    difference between zi no trip and zi trip

    hi everyone, i have just got the fluke 1664fc can somone please tell me the difference between a zi no trip test and a zi trip test. i know that it in zi trip it is a high current test but still i can not understand why im getting different readings between live and earth. Thanks
  12. S

    Well, that was a short trip

    Just back from Nairobi errr business trip cut short, looking at my "holiday" vids I need to loose a bit of weight........ anyways got to sort out my holiday cleaning...... sand gets everywhere,
  13. spud1

    Which RCD trip time to record?

    Afternoon all, As we all know the new 18th certs only have the facility to record the x1 trip time of a circuits RCD in the test results page. They've got rid of the x5 column for some reason!? NICEIC are recommending that where the RCD is being used for additional protection the x5 reading...
  14. T

    Board change (RCBOs) Lights trip sockets

    Evening all, I changed a board today in a ground floor flat. 3 circuits with separate RCBOs (Shower 40A, sockets 32A, and Lights 6A) Switching on any light switch causes the both RCBOs for the lights and sockets to trip. Insulation resistance results are in the 100s between conductors on...
  15. P

    Led strip light off, kitchen cabinets

    hi there, If anyone could help. We have blue led strip lighting under and over our kitchen cabinets, after a few days of moving in some of the lighting went off. I’ve looked under the cabinet and found the attached photo. 1) I it wired properly? 2) how comes the yellow and green wire is...
  16. G

    Breaker trip after screwing light fitting back to freshly painted ceiling

    Hi, This afternoon, finished re-emulsioning a plasterboard ceiling in a 25-y-o house (so the electrics are modern enough). I had removed a circular metal light fitting - the swivel 3-spotlight type of thing - but it uses modern LED bulbs. Never ever had a problem with it. The wiring is solidly...
  17. R

    Electrician Jobs RCBO trip test query - Testing wrong or is there a fault?

    Hi, Can anyone please explain why my friend's 30mA trip RCBOs passes the trip test (e.g. x5 is less than 40ms) when the test is done at the consumer unit but fails when the test is done at the sockets. Is he doing something wrong or is there a fault somewhere (the RCBO or the circuit...
  18. S

    Washing machine trip the breaker.

    When my washing machine (7 year old ) was running yesterday it trip the breaker ( that one ,first on the left , RCD i guess?!) and no power in home. We reset the trip and the same happened twice more (took me a ittle while to realise it was the washing machine!). The socket is OK, and I presume...
  19. Marti

    Random RCD trip & interconnected circuits. Suggestions appreciated.

    Hi There, I was called out to a house RCD trip which would not reset. An old style 10 way split board with a single 30 ma RCD (half without RCD protection). RCD checks out fine but I found a faulty chandelier & replaced it with a single bulb for now. Also a faulty 12v transformer flickering; now...
  20. Tallman

    Spur circuit cutting out then restoring - no RCD trip

    This is a new one to me.. a small spur circuit (3 double sockets) on ground floor, several small load items connected - table lamp, assorted AV kit (TV, Amp, DVD). On just these 3 sockets only, the power cuts, sometimes flicking on - off - on again. Other times it'll stay off for 1-3 minutes...

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