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trip

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  1. S

    Fluorescent fault overcurrent trip?

    4ft old style starter/ballast type fitting which when powered does nothing at all (not a flicker) but trips the 6A/30mA RCBO after maybe 3-5 secs. I didnt have my clamp meter with me when i went to see the fault but assume due to the time delay that its the overcurrent part of the RCBO rather...
  2. B

    one side of the 13a double socket is giving me a trip reading for zs

    hi im doing second fix on one of the re-wire house, down ring and today i was doing my zs test i tested all sockets but one side of the twin double socket is reading trip then the other side of the same socket is fine,im useing megger mft 1553(no trip) setting.pls help
  3. A

    RCD Trip on isolated circuit

    Hi, I am fairly new to this having only just completed and passing my Part P qualification so please bear with me. I decided to tidy up some wiring carried out in my house by a "professional" bathroom installer. The circuit in question is a 16amp radial with only one outlet supplying an...
  4. Midwest

    RCBO X5 trip time out, caused by washing machine

    I've used a particular socket in my kitchen to carry out monthly calibration checks (ZS & RCD) on my MFT, for several months with no issues. Last week I carried out my tests on my MFT and the x5 RCD test timed out at 40ms. Thinking I had a faulty RCBO, I replaced today, but the fault remained...
  5. UKMeterman

    Over / under voltage trip panel builder required

    Hi, I am looking for suggestions for a panel builder particularly round the Bristol area who could build up an over / under voltage protection unit using a suitable protection relay, contactor and so on and also be able to design the enclosure. Thanks James
  6. S

    RCBO trip times - no, not the usual what should it be . . .

    I was doing a board change today and 10 out of the 15 RCBO's were returning a value in the region of 19ms at 1x and 30 at 5x. Tried more than 1 MFT (both Metrel but got the same sort of results). So this is still within the 40ms's but with new RCBO's would you personally accept or return them?
  7. Simonslimline

    ELI on no trip with Megger MFT

    Does anyone have issues with this test and how accurate is a No trip test? I find my readings seem to change a fair bit testing the same circuit a few times. This is using a 1730.
  8. S

    Water heater stat without over heat trip

    If doing an EICR and you find an immersion heater stat with no over heat trip do you code it? Another spark I know makes it a code 2 - unsatisfactory. Thoughts please
  9. I

    rcd trip

    why would 2 rcds trip at the same time on a dual board
  10. B

    Nuisance RCD trip.

    Customer called me out today. Installation has been fine for years until they had a 24 hour power cut last week. Since then the cooker circuit constantly trips the RCD. Dual RCD Doepke board. TNCS. I disconnected the cooker switch and it still tripped. Had a look inside the CU and no loose...
  11. J

    Peculiar results on rcd trip test

    Afternoon everyone, got a weird one for you all. Installed electric shower, had to upgrade consumer unit at same time, carried out all dead testing etc, Ze and Zs all good, insulation test perfect HOWEVER when carrying out RCD trip test from the connector block terminals in the shower the RCD...
  12. T

    RCD doesnt trip on test.

    Hi I have a 6 way split load board located in the shed and served by 10mm SWA. Anything on the unprotected side of the board tests and works fine. However this is not the same for the protected side. I can plug a radio in and the circuit does not trip, but if I use the lawn mower or a drill the...
  13. P

    Complex motor start cuasing RCBO to trip problem

    HI, I have a difficult to diagnose problem. I've had two qualified electricians try and sort it, but no solution yet. It is tricky (interesting?) and would love to hear comments/suggestions. I have a long barn conversion. Supply enters one end into a CU. There is a 50A 30mA RCBO feeding a...
  14. S

    RCD trip help

    Just been called out investigate RCD tripping on downstairs ring at my parents it just went in the early hours with no history. Have unplugged all appliances from the 10 sockets on this ring and switched all sockets off. There are no other appliances fed from this ring other than those plugged...
  15. C

    NEW Fluke 1653b tester RCD Displays lead for a second on first rcd trip test

    Hello Has any one got a fluke 1653b tester or experienced the same thing with another teser. I have just bought a brand new fluke1653b tester. When i carry out a standard rcd test the first time the rcd trips on my meter the word "LEAD" flashes up for about 1 second, could be less, and then the...
  16. B

    Nuisance trip?????

    Evening gentlemen, got one I want to run by you. Did a new kitchen install a couple of months ago, within this installation there was an induction hob and single oven. A new 10mm cable was run to supply both appliances, through a 45A cooker switch, which supplies the cooker outlet behind...
  17. C

    RCBO Trip times very strange.

    Hi when testing an rcbo trip times with 2 vapour proof fittings switched on the times were 378 on times 1 and 154 on times 5 but when i test the rcbo with the vapour proof fittings switched off the times are 21 times 1 and 19 times 5 has anyone had this before. i am using a calibrated robin...
  18. P

    Will 2 out of 3 Phases Trip a 3 Phase Breaker?

    Hello, We've had an issue with a 3 phase piece of equipment that was tripping the 3 phase breaker as soon as it was turned on. On investigation (by a certified electrician) he said it was the equipment at fault. I raised a return of the equipment and the new one arrived today. To be able to...
  19. E

    shock!! no trip!

    When I wired my ccu I fitted all rcbo's. and tested all trip times etc. all passed!! In the garden mixing cement a few weeks later and water got all around the extension lead near the plugs! I didn't see this because it started getting dark! But Jesus I felt it with a rattle as I unplugged the...
  20. BigSi

    RCD Trip Times

    I was talking to one of my friends who just had his NICEIC DI assessment (about five months ago). We got talking about RCD trip times, because he was told that what he believed in (and myself) was wrong? RCD (30mA) TRIP TIMES (17th Edition Regulation 411.3.2.2. – Table 41.1) For a...

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