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  1. Z

    UK Rcd tripping cause?

    Thanks - noted
  2. Z

    UK Rcd tripping cause?

    Thanks - will perform a loop impedance test tomorrow !
  3. Z

    UK Rcd tripping cause?

    I have now for luck replaced temporarily that socket and the same result - seems to a problem within the fuse box.The wiring was red , black and bare wire with black overcoat.
  4. Z

    UK Rcd tripping cause?

    Thanks for your help. The dual socket did not have a grommet and the earth wire was covered black. I used a Megger leakage meter for the measurements and a kewtech socket tester which gave 3 green lights!
  5. Z

    UK Rcd tripping cause?

    Thanks for your help. The dual socket did not have a grommet and the earth wire was covered black. I used a Megger leakage meter for the measurements and a kewtech socket tester which gave 3 green lights!
  6. Z

    UK Rcd tripping cause?

    Forgot to mention , rcd extension cable worked fine in another socket in another circuit!
  7. Z

    UK Rcd tripping cause?

    Daughter’s new house. Garage has very old wylex distribution box connected to a double socket and a lighting circuit with one neon. put an RCD’ed extension cord in socket and the RCD trips instantly. Measured leak current at main fuse area. The neon light was switched off. Leakages house as is...
  8. Z

    Security system question

    It’s analogue unfortunately. It’s quite old!
  9. Z

    Security system question

    I have a four camera wired system. I fancy adding a 5th camera. I have an idea that someone may have invented a splitter box that could rotate from one camera to another say every 30 seconds - so that you can cover 2 areas for the price of one channel on the recorder. any other ideas would be...
  10. Z

    Light switch without earth wire

    if the back box is earthed through the conduit then you could use a self drilling screw into the back-box with a ring crimp on one end of a piece of earth wire from it to the switch. Some back boxes don’t have an earth terminal.
  11. Z

    RCD location and trunking in bathroom

    I think you have covered it. My opinion is that the RCD should be outside the bathroom but near it if the CU is not covered by RCD. My setup started as a large shower pump taken from a 13 amp socket ( in the same circuit as the 3amp central heating ) . This got changed to a digital mixing unit...
  12. Z

    Proving units maximum voltage

    That's what my did but when I e to video it itvran upwards from 50 to 690 and rhen back down. I found the following on Testerman’s web site The Kewtech Kewprove 4 Proving Unit is a portable battery-operated unit capable of verifying the correct functionality of a voltage tester. Kewprove 4...
  13. Z

    Proving units maximum voltage

    I emailed Kewtech and they stated that it does cascade up the voltages before cascading down. While this wasn’t what happened initially, it is doing that now and I don’t know what changed!
  14. Z

    Proving units maximum voltage

    I use the one that’s rated to 690 volts to test for dead circuit and use my fluke for accurate measurements of voltage and current.
  15. Z

    Proving units maximum voltage

    Could be but it is g do ocumented in the meter document without mentioning leads
  16. Z

    Proving units maximum voltage

    If the proving unit had started at the low end (50volts) and slowly rise to the higher voltages where you could halt before going to higher voltages by removing the probes surely would have been safer ?
  17. Z

    Proving units maximum voltage

    My fluke clamp meter says don’t use if voltages greater than 600volts - and the kewtech starts at 690 volts and you can’t say “please start lower than 690 volts.
  18. Z

    Proving units maximum voltage

    I decided,having lived with using a live circuit, to buy a proving unit. I opted for a Kewtech Prove 4 which covers 5 voltages between 690volts and 50 volts. The device starts at 690 volts which is ok for my Megger 2 pole tester. My fluke clamp meter has a limit of 600 volts. The second problem...
  19. Z

    Why cover earth wire?

    This is common in Ireland.
  20. Z

    RCD nuisance trips

    I had the problem of installed an RCD socket in the garage and put in a tool and the rcd and main RCD tripped. put extension cable in the rcd socket and the RCD didn’t trip putting the tool in the extension. my problem, I think, was the freezer in the same circuit. Removed the RCD socket and...

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