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  1. mak

    Some MFTs have PSC/PFC test combined, I wonder why others have it as a separate test

    That's nice I was just wondering why is there an option L-PE or L-N if you can stay in L-PE mode to test L-N
  2. mak

    Some MFTs have PSC/PFC test combined, I wonder why others have it as a separate test

    For example kt63 calculates pfc/psc with Zs but it has no option to go for an L-N test. The calculation is also the same V/Zs or V/Ze. The kt63 plus on the other hand has this option.
  3. mak

    Question about earthing the armour of SWA

    If cpc core is present i.e. it's either 5 core three phase or 3 core single phase — is a banjo connected with a brass screw into steel trunking adequate to earth the armour(provided trunking is earthed to the earth bar)? Or would you put fly leads in between then a fly lead to an earth bar? Thanks.
  4. mak

    UK Do you keep cable slack in the distribution board or hide it in the trunking? And why?

    What’s the easiest and safest way.
  5. mak

    CIS allowable expenses flat rate on travel and food?

    Pay as you go, I can access history in my TFL account.
  6. mak

    CIS allowable expenses flat rate on travel and food?

    I got a question for those who are CIS and file their own self assessment. I use public transport how should I calculate it? Is there a flat rate for public transport? What about food, can I claim anything if I'm 10 hours away from home?
  7. mak

    JIB Electrotechnical Certification Scheme (ECS) You do not have to be employed by a JIB member to apply for a JIB grade.

    Trying to fill out my ECS gold card application online with their website app, it tells me I need to be endorsed? I do work for a jib member company but on a self-employed basis. So my question is do I have to be endorsed?
  8. mak

    AM2 ring fault-finding headache

    That makes sense.
  9. mak

    AM2 ring fault-finding headache

    I had mine a few weeks ago and failed, unsurprisingly, but I remember the layout. I already know what I haven't done, I should have split the circuit in the middle like, ring, lighting, etc. and test from there! Need to practice more with 3-phase and have a second look at s-plan. 1598642173 I...
  10. mak

    AM2 ring fault-finding headache

    Thanks. That's what I'm talking about. If I will test resistance from both ends the fault will be on the side of least resistance. So not only I will locate the fault on the conductor but also on which side/half.
  11. mak

    AM2 ring fault-finding headache

    Which side of what? Of the ring? As in either first point to DB or the last point to DB? Sorry can't follow, what socket are you talking about?
  12. mak

    AM2 ring fault-finding headache

    How would I pinpoint a fault on a ring circuit with very little resistances, and without any visual clues, only by measuring. Say I have a break in neutral between db and first socket. How would I go about fault finding it? 1. I will use low resistance ohmmeter. 2. I will find that rn is not a...
  13. mak

    Is there a max Zs for lighting circuits?

    I get it. BBB has no correction factor applied unlike the on-site guide. So table B8 factor is optional? That makes a lot of sense. Thanks.
  14. mak

    Is there a max Zs for lighting circuits?

    I used 25C. Table B8 onsite guide. Where did you get the 0.8?
  15. mak

    Is there a max Zs for lighting circuits?

    I can't find anything related to this in the regs so I probably misunderstood the question. The way I see it the max Zs for any lighting circuit depends on the circuit breaker for that circuit. Say we have a lighting circuit with 100x36W ceiling lights which gives us a load of 16A, we choose the...
  16. mak

    Schneider board main switch TP-N and 4-pole

    Thanks I'll have a look into it.
  17. mak

    Schneider board main switch TP-N and 4-pole

    Yes I'm trying to ask exactly that.
  18. mak

    Schneider board main switch TP-N and 4-pole

    Oh I thought there was a reason for the difference.
  19. mak

    Schneider board main switch TP-N and 4-pole

    What's the difference between the two, one isolates N the other does not, got me confused when I was testing continuity between E-N, then I realized N was not isolated.
  20. mak

    Sequence of tests in guidance note 3 (initial verification)

    Oh I think I got you confused, I meant Ze. Ze which you test with the earthing conductor disconnected(due to parallel paths). On the test results sheet you put that value under Zs at DB because it can be either main or submain board in which case not true Ze. That's how I understand it.

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