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  1. H

    In ground patio lights

    Hi all, so my in ground patio lights keep tripping the RCD. I checked them over and found dampness in most of the buried underground three way junction boxes. On inspection I have found this is not the only issue. There are 10No. Lights in total and although when the fittings themselves are...
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    Boiler comes on after time clock has been removed from wall

    Hi just looking peoples thoughts on this one. I went to check out a 3 channel hortsmann time clock. I found it to be faulty as the display came and went. It’s about 12 years old and apparently when the internal battery fails it time to change the clock as you can’t access the battery. Anyway, I...
  3. H

    Using a generator to obtain a ze reading at earth rod.

    How accurate would the reading be? Want to do a quick test before the supply company comes to connect up. Don't have a proper earth rod tester but do have an Eli tester.
  4. H

    12v ac relay not pulling in

    Hi I've installed a 12v ac relay but the 12v supply won't pull the relay coil in. It gets it signal from a disabled alarm kit. Multimeter shows a healthy 12v when alarm is activated but relay won't energise. Tried a couple of different relays but no joy. ????
  5. H

    Finding earth leakage on 3 phase supply cables?

    Hi. I've got a high earth leakage value on a main db supplying many 3phase cables. What's the best way to find the leakage values on each cable? Some of them can't be turned off. If I clamp around all 4 live conductors as they enter the db would this give me the earth leakage?
  6. H

    Earth leakage clamp metres

    Thinking of getting one. Anybody know any good ones at a 'cheap' price?
  7. H

    Best way of lengthening cables for consumer unit change

    Just wondering what's the best way to go about it? Do you try and gain extra length from the attic, ferrul the cables or terminate into a junction box and lengthen from there?
  8. H

    Rcd tripping times/ ramp test

    What tripping time should I expect to be acceptable when doing a ramp test on both 30ma and 100ma rcds. I mean is 70ma tripping time on a 100ma rcd too sensitive?
  9. H

    Gas pipe earth bond.

    Hi all. Can anyone tell me if it is acceptable to bond the gas pipe outside of the house rather than just after it enters? The problem is I have to bond a gas pipe- it was noted on a recent pir that it wasn't done, problem is it enters the house through the roof space of a two storey house...
  10. H

    Had a pir done on a rented house

    Got a spark to do a pir on a house I'm putting up for rent. A few of his codes has surprised me. No rcds protecting the fuse boards is down as a code 1. Now the shower is on an rcd on it's own but the installation was wired o the 16th ed so surely code 1 is a bit ott? It's a tncs system
  11. H

    Rcd tripping on no trip Eli test

    Hi using a megger 1552 to do a few earth loops in a house. It's on the no trip function but still the rcd trips. Never had this before as usually the rcd holds out long enough to get the required reading for the earth loop imp. It's a tt system and the rcd ( 30 ma) is relatively new. Any thoughts?
  12. H

    Problems with phone sockets and wi fi.

    Hi. Pulling my hair out with this one. I'll try and keep it simple. Recently I've moved into a new house which has eleven telephone points dotted around in different rooms. They are wired from the master via two radial circuits, one serving each side of the house. The wiring appears to be a mix...
  13. H

    large shop with an rcd at the origin

    ......Set at 500ma. Now this supplies several dist boards serving quite a few circuits. My question is do I install individual rcds set at 30ma at every board or to reduce incovenience when a circuit trips do I put all circuits on rcbo's( think of the expense of over 100 circuits). A lot of...
  14. H

    Int alarm sounds on power failure.

    Hi can anyone tell me why my intruder alarm external siren keeps sounding when I turn the power off in my house? Surely this shouldn't happen ? Cheers.
  15. H

    extract fan on ceiling above the shower tray

    Not an inline fan. Is this good pratice in your opinion? Its outwith zone 1 and rcd protection. Thanks in advance.
  16. H

    Rating plate on the side of an appliance.

    A three phase kitchen appliance is rated at 7.5kw. Now is this in total over the three phases or per phase? If over 3 phases then I guess that's 2.5kw per phase or 10.8amps per phase. The more I think about it the more I think it's over three phases.
  17. H

    Earth leakage measurement

    Would someone please remind me how I can do this again? I know if I clamp the neutral only it will give me a reading stating how out of balance the phases are but do I clamp neutral and earth together at the same time to obtain earth leakage current?
  18. H

    Recessed paving lights.

    Have 15 of these to do in a patio external obviously. It's actually brick paving. I need to core a hole approx 100mm per light. My problem is I just don't know what the best way to terminate would be. Of course I'll need some sort of ip rated jb for each light but where should this go? Down...
  19. H

    Current ranges in 9.5 kw

    Hi I was asked to check out a shower in a hair dressers which was tripping out the fuse. Soon found out it was a 9.5 kw shower protected by a 30a fuse. Problem solved. However decided to experiment with my new clamp meter an found when the shower was turned to the highest setting(power of water...
  20. H

    Anybody use a fluke t140?

    Thinking of getting one. Anybody have/use one? What you think of it? Is there better out there for similar price?

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