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  1. M

    Intermediate switch to fixed always on

    The sensors are not 100% reliable, so would want at least one switch controlling each circuit.
  2. M

    Intermediate switch to fixed always on

    Great and thanks. Would it be a question of simply connecting the two L1's and the two L2s?
  3. M

    Intermediate switch to fixed always on

    I have purchased a number of expensive copper dowsing&reynolds light switches which have been fitted by an electrician as part of a refurb project. I am not proposing to do this myself, but as previous advice on the forum has been very useful, so would like to know if this is possible before...
  4. M

    Strange RCD tripping problem

    UPDATE to this perplexing problem. I am grateful to everyone for their time and contributions. An expert visited a couple of weeks ago. He found that the problem was not over-current, rather accumulated earth leakage - as has been suggested by some above - and a Neutral-Earth fault on the...
  5. M

    Strange RCD tripping problem

    As you can see (or perhaps not), not a very technical report
  6. Engineer report_Page_1.jpg

    Engineer report_Page_1.jpg

    • Mjbarnard
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  7. M

    Strange RCD tripping problem

    Ok thanks. So does that mean I might be able to get the supply split and put the A/C on a new mini CU?
  8. M

    Strange RCD tripping problem

    Not sure I understand your questions / comments. To my simple mind: Never previously had a single rcd trip. A/C installed by what I believe is reputable experienced company. Almost immediately frequent RCD trips. Could prevent them by isolating A/C both internally and externally. Seemed a...
  9. M

    Strange RCD tripping problem

    Hopefully new electrician coming on 15th. I will invite him to comment if he can or cannot resolve it. That will obviously be much more useful than my observations. I will point him to this thread but would you recommend I ask him any specific questions ? I am not suggesting that as a...
  10. M

    Strange RCD tripping problem

    #67 as part of the research I came across recommendations about not putting inverters on RCDs. I suggested this to electrician but he wasn't comfortable with that
  11. M

    Strange RCD tripping problem

    #63 will try to post better image CU when I finish rounds.
  12. M

    Strange RCD tripping problem

    iPad error
  13. M

    Strange RCD tripping problem

    iPad error
  14. M

    Strange RCD tripping problem

    #61 - correct. We had DW unplugged all day yesterday and could replicate tripping. Coincidentally we had the DW replaced a few months ago and the original one had been hard wired in, so as part of the installation the electrician changed the fixed wiring to a single socket. So this is also new...
  15. M

    Strange RCD tripping problem

    Yes if I isolate the air con external units or turn the air con mcb's off OR leave the air con on and isolate the dishwasher (irrespective of whether it is plugged in or not).
  16. M

    Strange RCD tripping problem

    Ta - electrician previously supplied quote for swapping all mobs to rcbo's as one of the options. Not sure why we didn't do it - I think he wasn't certain it would solve it.
  17. M

    Strange RCD tripping problem

    Thanks for suggestions. Am in the hospital today so haven't been able to do much more observations. Murdoch (msg 42) not sure what you mean by "off", but all the internal units have been off for months, and tripping occurs frequently when they are not on. Devon Chris (43) A/C circuits new...
  18. M

    Strange RCD tripping problem

    Marconi, Have tried your steps. Unplugged dishwasher. To complicate things even further in the middle of the night RCD tripped again. This time it could not be reset unless mcb for A?C 3,4,5 was switched off. This is the first time this circuit has been a problem. So this has altered the...
  19. M

    Strange RCD tripping problem

    Marconi - it's a new miele dishwasher and it's only 4 screws to pull it out. Will be able to do without much difficulty. I will try as you suggest - will report back and be interested in the results. Booking a new electrician. Sparkie - one of the troubleshooting steps previously was to...
  20. M

    Strange RCD tripping problem

    Marconi - from the A/C contract: To supply, install and commission a comfort cooling system at the agreed location. We have specifically selected Mitsubishi Electric equipment for this installation. Mitsubishi Electric are widely recognised as leading manufacturers of air conditioning...

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