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  1. S

    High TNS readingssssss

    S type RCD, simples.
  2. S

    16mm T&E tails on 100amp fuse

    Sorry I was referring to the original post.
  4. S

    my pet hate on jobs

    Use a hammer to find them, that normally gets the message across to the plasterer
  5. S

    16mm T&E tails on 100amp fuse

    Have the rules changed ?? Assess the maximum demand of the installation, if this does not exceed 60 Amps then 16mm tails are acceptable. I think NICEIC inspector told me this. Make a note on the certificate. It's important that any additions to the connected load do not exceed the rating of the...
  7. S

    Shower or Basin?xxxxxxx

    Not sure what reg I would quote, I am thinking with my NICEIC hat on, just cover your arse. The regs can be interpreted in lots of ways but sometimes common sense has to prevail. The 17th edition stated that equipment must be suitable for the location, that's why you can't have a light switch...
  8. S

    Confusing EICR, 'Satisfactory' assessment but C1 present

    Press the test button on the RCD, if it works OK then stop worrying yourself.
  10. S

    Confusing EICR, 'Satisfactory' assessment but C1 present

    Is the circuit protected by a 30mA RCD ? If the answer is yes then the results are pretty un-inportant. Maximum Zs is 1666 ohms. In practise a reading over 200 ohms woukd be considered unstable. Sorry if I've confused things. By the way if it has no 30mA RCD protection then that would be more of...
  11. S

    Shower or Basin?xxxxxxx

    Forget the regs it's lethal. The distances in the regs are for a fixed shower head not one you could wash the whole room down with. I would give it a C1
  13. S

    2.5mm Ring wired off a 4mm Radial

    How is the 4mm run to where it splits ? Apply a few de-rating factors and your 4mm becomes a 20 Amp circuit. Nothing wrong with the circuit arrangement by the way.
  14. S

    Advice on Job i went to today

    They haven't used the second RCD. Does not minimise disruption in the event of a single fault. The original post says they were asked for their NIC number, if they are claiming to be registered and are not, NIC will prosecute them. One of the few things they are good at !!
  16. S

    Joining existing cooker cable

    Use Ashley J803 0r 804. Bin the connectors inside and replace with insulated through crimps. Complies with regs. Maintenence free, cables secured against strain at their terminations, non flame propogating enclosure. However I only use this method if it's really hard to rewire. Rewire is the...
  17. S

    Minor works R1+R2 measurement

    r1 + r2 is als I stand corrected (well sit down corrected to be precise) o measured for initial verification. Ze + (r1 +r2) is approximately equal to the expected Zs. Ensures that the circuit is safe to energise before "live" Zs reading is taken. Apparantly is acceptable to calculate r1 + r2...
  19. S

    Adding socket on to kitchen ring-no rcd

    Interesting information, I've been buying metal "garage units" and binning the mcb thinking I had to do this for compliance. Back to the little plastic 2 module enclosure for me then ! It did seem a bit daft when adding on to a circuit in a plastic Consumer Unit.
  20. S

    Minor works R1+R2 measurement

    r1 + r2 is also measured for initial verification. Ze + (r1 +r2) is approximately equal to the expected Zs. Ensures that the circuit is safe to energise before "live" Zs reading is taken. Apparantly is acceptable to calculate r1 + r2 from Zs-Ze when carrying out future testing (advice from...
  22. S

    New build outside light

    Catch 22
  23. S

    New build outside light

    Yes it's not connected, but by it being inside the fitting I believe it makes it no longer able to classed as "double insulated".
  25. S

    Hello and after some advice please on temporary lighting circuit

    I assume some part of this "re-wiring" will include the bathroom so it will come under part P Building Regs. Also I think it would be stretching a point to say that you have not created new circuits. That means you will need to "Notify" the work. The law says you are not competent, because you...
  26. S

    New build outside light

    Since we are debating this here is my quandry. The regs say every item of equipment and accessory should have a c.p.c. available, common sense particularly for the situation originally posted, changing class 2 fitting for class 1. Problem is if you introduce an "earth" to a double insulated...
  28. S

    Dangerous upgrade to crabtree rcbo's

    It sounds to me as though you have uncovered a design fault. The internal trip mechanism must be fed from the live side of the breaker , not the protected side. Quite rightly you would not expect the neutral tail to be "live" when the circuit breaker is off.
  29. S

    AV cables in solid wall - what the regs say?

    So you can isolate it at night easily, (my mate is a fireman !!)

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