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  1. I

    Problem with Security light turning on other light

    Exactly what I was thinking. Take the hall lamp out and see if the PIR light still works.
  2. I

    connection

    No - it seems that the OP has been back to counter criticise the perceived slight but is unable, or unwilling, to clarify the original question. The majority of people are willing to help you, but we need more info. It's very easy to type a flippant comment which can be easily taken the...
  3. I

    Connectors in plastic adaptable box

    Off topic by the 3rd post. Must try harder next time.
  4. I

    Connectors in plastic adaptable box

    I regularly use Wago TopJob DIN rail connectors for CU replacements, if the cables need extending. As a slight twist on the metal consumer unit debate, how many of you will be happy to fit connectors (DIN rail or otherwise) in a plastic adaptable box to extend cables when installing a...
  5. I

    Todays Earth Rod Efforts

    It's an impressive result with so few rods. I'm guessing it's mostly clay? I didn't mean to offend by calling it an experiment - it's just that you're exceeding the minimum requirements of BS7671, something that hardly anyone seems to do these days. I may have mistakenly got the impression...
  6. I

    Bonding question

    Don't take this the wrong way, but are you connecting one probe to the plastic pipe and one to the metal?
  7. I

    Todays Earth Rod Efforts

    Who is paying for this experiment?
  8. I

    R1 + R2 on commercial eicr.

    Indeed it does. However, following the "correct order" saves you having to backtrack when you find, for example, that you've performed the IR test lives to earth, but your subsequent R2 wander lead test proves that you don't in fact have a connection to earth, rendering the IR results meaningless.
  9. I

    What Rods should read

    It's not quite as straightforward as resistors in parallel. There's a detailed formula in BS7430 for this, but practice and theory are not the same. The following may be subject to errors, but gives an idea of what to expect. Assuming one 8' (2.4m) x 5/8" (16mm) rod gives your 20 Ohms...
  10. I

    R1 + R2 on commercial eicr.

    As you're doing it anyway, I would do the R2, or R1+R2 first - if the cpc is not properly connected at the db (or somewhere else) your loop test will put 230V on any connected exposed- or extraneous-conductive-parts. May be OK if there is no one else about, but you need to consider the risk.
  11. I

    R1 + R2 on commercial eicr.

    That's what the OSG shows. Unfortunately what they forget to tell you is that any supplementary bonding, metal containment on the circuit under test, or other fortuitous connections to earth may skew your results. As this is an EICR, all you need to establish is that there is a connection to...
  12. I

    Help ... Shed in Darkness !

    Yes. Draw out the circuit, then think about what needs to "break" for you to be able to measure 230v between N and E. Then, if you haven't already got a calibrated insulation resistance & continuity tester, maybe call in someone who has.
  13. I

    Cowboy electricians and trading standards.

    Sorry to hear of your troubles. Keep pushing trading standards. Electrician Faces Fine and Community Service for Falsely Claiming ELECSA Membership - Professional Electrician
  14. I

    Two way light switching using just twin and eath cable...

    Don't know about "passing part P" (see a urologist?) If the 2 way is run in 2c&E and insulated and sheathed singles, rather than singles in metallic conduit or trunking, it's not very good for EMC, particularly when cheap LEDs with built in switch mode power supplies are used, but it's probably...
  15. I

    No discrimination, no problem???

    By connecting the "live" test probe to the outgoing "L", and the other to the incoming "N"? That's what I do when there's an upstream RCD as it doesn't cause an out of balance line / neutral current for the first RCD.
  16. I

    Bonding 10mm oil pipes

    Did you disconnect the main earth from the CU and test directly to it i.e. with everything isolated from true earth? It sounds like you have a "fortuitous connection" to the MET via one or more cpcs or heating pipes. This is one of those situations where adding a main bond will...
  17. I

    Plastic amendment 3 CU's

    And there are still muppets installing CU's without doing any testing :-( Just been to quote for some minor works at a property. 10 months ago I lost out on the board change and some other work. Householder showed me the "certificate". They have both the top copy and the carbon one. No...
  18. I

    Plastic amendment 3 CU's

    It is important for the installer to seal all openings into the enclosure or cabinet for cables, conduits, trunking or ducting that remain after the installation of cables. See Figure 6. The intent of the sealing is that, as far as is reasonably practicable, any fire is contained within the...
  19. I

    Plastic amendment 3 CU's

    The regs don't stipulate that the openings need be fire sealed, IMHO. This discussion hosted by Mark Coles, the IET technical guru, talks about it, and the conclusion is there is no change to IP ratings, and no requirements for intumescent seals (view from 13m:15s to 15m:00s, if you can be...
  20. I

    Replace CU then PIR

    You don't have to be a member of a scheme to do a CU change. Why not find out what your local building control authority charge if you notify in advance, same as you would if you were pouring foundations or knocking down a load bearing wall? It may be cheaper than paying someone to do an EICR...

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