Recent content by mapj1

  1. M

    Requirements for RCD protection ?

    if you must have a few sockets for general use, a possible way forward if the wiring is all in earthed trunking or conduit, or SWA, is to fit sockets with a built in RCD but NOT to have one at the circuit origin - that way only defective kit goes off, which is after all the idea. Equally one...
  2. M

    Quick way to get a shaving socket into the bathroom

    Surely you can extend an existing circuit, from the MCB in the consumer unit if required, into a space out of zone in the bathroom- nothing stops a spur on a ring being taken from the breaker directly after all, and we are not looking at an especially big load so a 13A fused spur will be more...
  3. M

    tree growing in gully!!!!

    Hmm, well your rain water may be supposed to go down the gully, through a trap and either off to a rainwater drain in the road or possibly a soakaway a few meters from the house. I bet it hasn't for any time in the last decade. Are there any neighbouring houses with a similar set up (but no...
  4. M

    PME and floating neutral

    It is a very real weakness of PME systems, particularly those fed from overhead singles, that say a tree might take out the neutral and not the live. The short answer is nothing - the metalwork of the house or whatever can go up to poractically 240v until the fault is remedied, so for swimming...
  5. M

    RCD keeps tripping when shower switched on

    Assuming no crossed neutral cock-up You have megger - unship the wiring and connect the megger between the earth terminal of the shower as one side and the L&N terminals strapped together as the other. Effectivly this does a 500V PAT style insulation test, - this should do no harm if the shower...
  6. M

    RCD Conundrum

    Or it could be a fault that introduces a effect that is a variation of the early D-LOCK, namely a DC imbalance that saturates the ring core in the RCD, causing it not to respond to a fault. Gently winding up a low voltage DC power supply between N and E, until you have perhaps 1/4 A flowing will...
  7. M

    Using junction boxes to extend a ring circuit

    Or add a dummy socket at the point where the junction box would otherwise have been, or even a back box and flush blanking plate. The same trick often used to make 'pukka' routes that are not the lines of least surprise, by generating a new permitted zone around the new back box. (though the...
  8. M

    An official petition to No 10 to review part P..

    http://petitions.pm.gov.uk/Part-P-Review/ http://petitions.pm.gov.uk/Part-P-Review/ I am sure some of us will have already seen this, and it is clear from the discussions on this BB and in other places that Part P is not really as satisfactory as it could be, as seen from either side of the...
  9. M

    No cold water upstairs after turning water off?

    Could be an air lock - are your upstairs taps fed from a storage tank, or direct rising mains? Or the silly one, while the water was off, did anyone else fiddle with any other isolators or valves to try to use the water upstairs, & perhaps accidentally turn the upstairs supply off? To be any...
  10. M

    Freeze or drain ?

    Whilw we are smiling :lol: The carrot and spud one, assuming its not a wind up, sounds intersting - my header tank has 2 of those lugs - still there we go. My tip is that I have used one of those wine bottle savers for 22mm pipe. Was given a set by an aging relative as a present, only to...
  11. M

    OVERFLOW driving us insane!!!

    If you are old enough to remember Yuri Gellar, you will be able to bend the arm. Seriously., remember you are not trying to kink it sharply in one place, more bend it into a gentle bannana. Without practice it might take two of you to do it in situ, one to hold the valved end up, and the...
  12. M

    Central Heating Playing Up

    Is there a motorised valve inside or near the boiler that diverts the output of heater (the fire box if you like) to supply either the rads or the hotwater heat exchanger. If so it may be sticking in the rads position, even if the gas is firing correctly. regards M.
  13. M

    OVERFLOW driving us insane!!!

    OK I may have missed a bit, this is a long thread now, but the reason folk keep asking about the mixers and washing mash etc is only this - at any point where hot and cold water mix, if something is faulty and lets the high pressure cold mains water back up into the hot water system , it will...
  14. M

    lead pipe, should it go or stay?

    Cheers guys. Well actually the meter is able to flap a bit, I suppose, as there is lead on both sides - the mains gas supply is exactly the same method as the bit that is on my side. To make sure I have it right :- From what you say its not really uncommon, possibly not strictly right...
  15. M

    OVERFLOW driving us insane!!!

    Holding the ball UP should stop the flow into the overflowing tank- makes the valve think the tank is already full when it is not. (actually a bungee cord and a nail in the timber above makes a good temporary shut-off wne the isolator cant be found -tut tut..) The cheap as chips solution is to...
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