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  1. dmxtothemax

    Doorbells again - volt drop / max bell wire length

    there is no way that 3m of wire would read .87 ohms, much of that would be resistance of the test leads.
  2. dmxtothemax

    UK RCD vs MCB trip

    pretty much !
  3. dmxtothemax

    UK RCD vs MCB trip

    so you think it is a speed issue rather than a currant threashold issue ?
  4. dmxtothemax

    UK RCD vs MCB trip

    There was an earth fault ,thats why the RCD tripped, But if the fault currant did not exceed the trip threashold of MCD, Then this would explain why it did not trip.
  5. dmxtothemax

    Modern wiring help rcd trip

    have you tried a differant PSU on the router ?
  6. dmxtothemax

    UK RCD vs MCB trip

    perhaps the leakage currant to ground during the fault was past the RCD threashold which is only >30MA but less than the mcd device which wil be > 20A.
  7. dmxtothemax

    UK RCD vs MCB trip

    with two units in a series arrangemant the fastest one trips first, once that has tripped then there is no reason for the second one to trip so it's purely a speed issue.
  8. dmxtothemax

    UK Lighting connections help please

    if it is a two way switch arrangemant ? And if some one not knowing this has changed the switch And not used the correct switch This could explain the problems
  9. dmxtothemax

    UK Lighting connections help please

    could it have been a 2 way switch arrangemant ?
  10. dmxtothemax

    Laos - no earths, no RCDs... advice please

    you use plug in style RCD's on each outlet, there does not have to be an earth for them to work. If you have multiple earths this can cause havoc with board mounted RCD's.
  11. rcd.jpg

    rcd.jpg

    • dmxtothemax
    • Media item
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    • Category: Electrical Videos
  12. dmxtothemax

    The Story of Creation ( according to the Electrician's Bible)

    And in the beginning was the I [ amps ] And he said it was not good that I was alone So he created the R [ ohms ] and therefore the E [ volts ] And he saw that it was good now.
  13. I =.jpg

    I =.jpg

    • dmxtothemax
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  14. dmxtothemax

    UK Unregistered electrician's work to be checked by his registered colleague

    QUOTE - Should I accept this? YES. If the electrician signs off on it, then legally he is responsible for it So he would not let the other do it if he does not trust him, And if he designed the layout anyway Then there is nothing to worry about QUOTE 2 - How do I resolve this situation? there is...
  15. dmxtothemax

    Voltage drop problem not resolved with bigger cable

    Are you sure that the local grid has the power to power the heat pump ?. It could simply be that the local supply grid is maxed out, And therefore the power just aint there ! To know for sure, you need to measure the voltage at the main panel as well and compare.
  16. dmxtothemax

    RCD and Elements

    it is not unusual for older style heating elemants to have some leakage to ground, How ever not all of them leak and the newer styles tend not to leak as much. In Australia leakage to ground can go as low as 100k ohm before it is considered unsafe. If it does leak ? just replace it with a new...
  17. dmxtothemax

    Can anyone explain this reading (suspected open circuit)

    a small current flowing in the earth line combined with the circuit resistance = voltage if I remember I X R = V.
  18. dmxtothemax

    Are you one of the people lost by Thomas Cook going bump?

    I'am but a poor sparkie, so I cannot afford to be jet setting around the world !
  19. beer.jpg

    beer.jpg

    • dmxtothemax
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  20. dmxtothemax

    LED bulb safety

    if they are on a pateo under some cover Then you should be fine It all comes down to the quality you select

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