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  1. TJ Anderson

    Earth leakage clamp meter

    That is a really great price! The AmeCal one on ebay which I already thought was a bargain is a rebrand of that and is more money.
  2. TJ Anderson

    Will an HNC in electrical engineering count towards an adult trainee apprenticeship

    In your case if you have HNC then you will find the electrical theory a breeze. There will also be theory regarding other aspects of being an electrician such as, for example, fixings or material handling which I imagine is not in an HNC.....I may be wrong. The main thing for you is to get the...
  3. TJ Anderson

    Joining / Extending cable

    It's your house, you're the homeowner, you're responsible for complying with building regulations, you do what you like. There is no way that a qualified electrician, let alone 3 would be sucking air through their teeth not knowing how to extend some T&E cables. You have a few posts like this...
  4. TJ Anderson

    Finding the correct neutral to pull in a DB

    I appreciate what you're saying but live working and live testing are two different things. People of quote Reg 14 EAWR to justify live working but you would very rarely meet the conditions of it. It justifies live testing because you need it to be live and you have suitable precautions e.g...
  5. TJ Anderson

    What do I need to become fully qualified?

    Not really as you won't be able register with a scheme without an NVQ3 plus from a practical perspective you won't have any experience in the field so could get in a mess. If you can get all the quals above, once you get out, register with an agency to get work as an electricians mate or as an...
  6. TJ Anderson

    High Ze causing headache !

    Nice one, that's the reg and the one that often gets fell foul of.
  7. TJ Anderson

    High Ze causing headache !

    It was on the IET forum about why we should not use adiabatic for fault currents operating devices <0.1S or >5S. I couldn't remember but just found it again on there. Going over 5S was more straightforward. Because the adiabatic is simplified it does not allow for heat loss, this results in...
  8. TJ Anderson

    High Ze causing headache !

    Generally it does work out with MCB's if you are operating with pfc's withing the breaking capacity of the device. At least it always has in the real world scenarios I have applied it. There is also the other variable of manufacturers data where you can go with faster times than the 0.1s in the...
  9. TJ Anderson

    High Ze causing headache !

    Incorrect. You only stated that after I had mentioned it. It often gets missed. Applying RCD to a circuit to cover ADS goes hand in hand with checking Line-Line or Line-Neutral thermal constraints.
  10. TJ Anderson

    High Ze causing headache !

    If you meet ADS by OCPD then you meet thermal constraints. If you meet ADS by relying on an RCD then you may well not meet thermal constraints for L-N by the OCPD which is still covering that.
  11. TJ Anderson

    High Ze causing headache !

    Thats the problem. The regs only require Zs and don't get people to take Zn because the cpc =/< than the neutral so the fault current will =/> too and still disconnect
  12. TJ Anderson

    What Qualifications are needed to become qualified Electrician?

    Yes, that would be a perfect plan and you would come out of it both qualified and experienced
  13. TJ Anderson

    High Ze causing headache !

    Sorry, yes you are absolutely right. I was generalising regarding final circuits and not his particular circumstance with a BS88. I had skimmed down through the posts. The point I was getting at is that is that L-N often does not get considered when people are applying RCD's to cover fault...
  14. TJ Anderson

    High Ze causing headache !

    l Because you would be trying to meet the current to operate the magnetic part of the MCB which disconnects in 0.1s-5 on the tables. They show the values for 0.1s for you to use in calcs and state 5s (for exactly the same fault current) to show the ADS met incase someone can't work out that...
  15. TJ Anderson

    High Ze causing headache !

    It's also the thermal constraints part you need to comply with not just disconnection time. I'm not near my big blue book but it is in there. You have to use the 0.1s value of MCB and use it in the adiabatic to confirm.
  16. TJ Anderson

    High Ze causing headache !

    You also need to consider the protection for L-N faults which won't be covered by adding RCD's. This often gets missed. If you have a circuit that has cpc size equal or greater than the neutral and you have inadequate fault current to operate ocpd fast enough with regard to thermal...
  17. TJ Anderson

    What Qualifications are needed to become qualified Electrician?

    NVQ3 and AM2 will get you graded as an Electrician with the JIB. Google that as there are a few ways people are doing it, but ultimately, that is what you need now. The theory side will be a breeze for you as is at a much lower level than you have been working.
  18. TJ Anderson

    Help please on a sub consumer unit fed from RCBO

    Nothing wrong at all with a ring final circuit and if you have a MFT1711 available to use you can fully test it. Good shout on going for RCBO for final circuits, better solution really and cheap enough these days.
  19. TJ Anderson

    Seeking advice on qualification for experienced electrician

    If you are genuinely experienced and can evidence 5 years work experience then the City and Guilds 2346 NVQ3 followed by AM2E is for you. Once achieved you can get JIB Graded as an Electrician. It is not a training course though, just assessments and a portfolio, so you are just evidencing what...
  20. TJ Anderson

    Ecs card application..

    He has not got level 2 completed yet

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