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rcd tripping

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  1. G

    rcd tripping?

    Hi guys. slighty baffled by this one. Rcd tripping intermittently when 3x 16watt 2d lights are switched off at the wall switch. Carried out ins res tests... All ok. Lights turn on fine and only trips 2 out of 10 times when turning switch off. possibly inductance causing earth leakage??
  2. A

    poor rcd tripping times

    Hi all After having the shower circuit upgraded to 10mm cable, new shower and pull switch the tripping times recorded for the existing rcd are as follows. 76ms x1 65ms x1(180) 28.6ms x5 38.3ms x5 (180). These times appear not to meet the standards for the minor works cert and im after...
  3. N

    RCD tripping while Zs

    Hi guys, what would cause an RCD to trip when carrying out a Zs test, it is a lighting circuit in a new build house and I have it on the "no trip" setting and it still trips the RCD, the RCD itself passed the RCD tests and the IR is 800Mohms so that's fine, I even even replaced the RCD but the...
  4. R

    Another RCD tripping

    Will a RCD trip if there is a problem on the cable drawing no current ? I plug in a tumbler drier and power it up, the RCD trips Remove the drier plug and try the drier in another socket. The drier works without tripping the RCD. I try my electric drill in the socket that tripped the RCD...
  5. S

    Rcd tripping when lights turned off

    Have been to check site where consumer unit with 5 circuits. 4 of those circuits feed various light and sockets in one stable barn with a lot of flourecent strip lights and outdoor school flood lights. The 5th circuit is on 16A mcb and feeds a second consumer unit via armoured cable in a second...
  6. B

    RCD tripping with underfloor heating

    Can anyone offer some advice...... Customer recently moved into property, underfloor heating not working but looks like quite a new install. First problem i found was the switched FCU was faulty that supplies the underfloor heating - replaced that, switched on still nothing illuminating on the...
  7. K

    RCD Tripping

    Hi Every one, I have been asked to look at a problem in a toilet when the light is turned off the RCD trips intermitenetly but not when it is turned on. There is a fan and small flourescent shaver light in the room . the instalation was rewired by me about 10 months ago all the test results were...
  8. D

    Fault Finding Help Please, Random RCD Tripping.

    Hi all, new to the forum and hoping to garner some of your expert knowledge. I live in a small 2 bed house and the main RCD on the consumer unit keeps tripping randomly. There are 6 separate circuits and by elimination I've ruled out the lot except for the sockets (all on one ring). Now I'm...
  9. A

    RCD Tripping Under load

    I have a split CU and have just added a new ring (14 sockets) a 10.5k shower and lighting circuit. All of these are as a result of a third floor being added to the house. Everything works perfectly but when the shower is on and I use my drill in any of the 3rd floor sockets, the RCD trips. I...
  10. C

    rcd tripping

    Hi all. Need some help,I fitted a new dual rcd board today and have problems with the RFC tripping the RCD. Test results for circuit are as follows, r1=.34, rn=.36, r2= .81 (r2 a little higher than expected but I think still o.k?) I.R= 10.6 M ohms.lower than I would like but still acceptable...
  11. B

    RCD tripping - Hypothetical question

    Ok gents (and ladies), new on here so go easy please! In a couple of weeks I am planning on doing my first CU installation (replace old Wylex fuse box). My concern is the potential for nuisance tripping after the unit is installed, I intend to fully test before fitting the new unit to give me...
  12. I

    RCD Tripping - Boiler Control Box

    Hi Guys, Hope someone can shed some light on a recent problem: We have attended a problem whereby an RCD was tripping in a property due to a capacitor (suppressor) in a boiler control box shorting. We have removed the capacitor, and now all seems well. The questions are, Does anyone know...
  13. H

    RCD Tripping when light is switch off

    Hi, right been to a 3 storey house that has been turned into offices the problem is first all the circuits are protected by 1 RCD the actual fault itself is when you switch the light on in the basement its fine when you turn it off it trips the RCD then everything is off, so I have narrowed it...
  14. D

    RCD tripping

    Hi All New to the forum and just passed 2330 and 2391 with an expensive test meter on its way!!! the first thing on my list is a mates RCD tripping - funny how many mates you find suddenly ??!!! My plan is to first test the RCD but would be surprised if this was the problem, then I would go...
  15. DaveyD

    100mA delayed RCD tripping before the 30mA at DB. TT System

    Hello Just not on the job at the moment but the builder called. He plugged his small angle grinder in to a new circuit and it took out the RCD at the supplying DB not the 30mA at local CU. Here's the set up: TT . 100A DNO fuse House CU old and full so split tails into small CU with...
  16. R

    rcd tripping

    hi guys ,several pieces of equipment on different circuits on the non rcd side side of a split main/rcd board are tripping the rcd .the mcbs are not tripping. any ideas as to why this is happening? could it be crossed neutrals or just a faulty rcd.thanks
  17. rustynails

    RCD tripping

    Hi all, On a ground floor ring main protected by a 30amp bs3036 rewirable fuse the owner has reported the 100ma rcd trips out on any occasion where her bathroom extractor fan is on at the fused spur and she tries to use the Hoover. After looking at her bathroom extractor fan, I've seen that...
  18. P

    Rcd tripping

    Hello all i have just installed a mini consumer unit next to an old board to protect d/s sockets And lights for some kitchen work ll ok for 2 days but customer called me out sockets tripping any ideas no o/s light all sockets un plugged IR over 200 meg r1 very high tho need to check tightness of...
  19. bartkusal

    RCD tripping, advice

    Hello, to everyone, would like some clues and ideas please, from obviously more experienced members on this forum. Have attended the call out from customer, apparently his sockets don’t work. The board is old with plug in BS1361 cartridge fuses, as soon as I put the only one ring circuit fuse in...

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