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Thread: Installation of 220V downlights

  1. #11
    Site Caretaker Dave A's Avatar
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    Quote Originally Posted by murdock View Post
    it just looks like 2 twin+e connecting into the box
    Aah. So the box is open just for the photo then....

    Installation of 22V downlights
    Oblivious, is that meant to be 220V?
    Or maybe I'm just being really doff tonight

  2. #12
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    dave such quick thinking for so late at night...imagine how sharp you must be during the day...teehee

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    HI. Once again, thanks for all the input.

    The housing is 240V yes. Seems the original electrician did his own thing and gave a COC as well....

    End of the day the current electrician is going to install 12V lights and transformers. They say it is much easier and safer. My house is 15 months old. Obviously it was given a COC then but suddenly now there is about R3500 work that needs to be done. I tried getting hold of the previous electrician but the bank and municipal electricity department "cannot obtain" the COC for me. The builder moved to Durbs, very good builder though. Just wish I could get the details of the original electrician (draadtrekker). I will still endeavour to get hold of that guy and report him.

    Anyway, I am out.

    All of the best guys.

  4. #14
    Email problem 123's Avatar
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    Page 253: 7.9.3.3.1.3 At least 200 mm of the conductors leading from an ELV lamp
    holder shall be 180 C (class H) flexible conductors such as siliconrubber-
    insulated conductors. The lamp holder shall also be suitable for an
    operating temperature of at least 180 C.

    Page 254: 7.9.3.3.1.4 The ELV power source shall not be installed above the lamp
    or within 200 mm from the lamp to any side unless a heat barrier is
    installed between the lamp and the power source.


    Clearly the above only applies to ELV (7.9.1.1 The particular requirements in this subclause apply to extra low voltage lighting installations supplied from sources with a maximum rated voltage of 50 V a.c. or 120 V d.c.) lighting installations? 220V lighting installations is not ELV? So the above reg cannot be applied to it?

    Another reference by the sans code:

    This part of SANS 10142 includes certain provisions which are for
    information and guidance only. These provisions do not use the word "shall"
    and they can be found in the text, in the notes and in the informative
    annexes. Except in tables, notes are always for information only
    .


    6.14.3.6 The connections between circuit conductors and luminaire
    conductors shall
    a) allow enough slack immediately behind the base of the luminaire for
    easy handling, and
    b) in the case of a pre-wired luminaire, be made using a connector.


    NOTE: PVC insulated conductors should not be used where the temperature of the
    conductor could exceed 70 C, unless the conductors are shielded from heat
    sources.


    The reference made by the code is a "note" only.

    Unless an accurate temperature measurement was done along the complete conductor, and the temperature exceeded 70 C at any point, the conductor should be protected against such exposed heat for such points. (Again, the word (for a coc), is should, and not shall.)

    However, the example and reasons provided for the invalidation of the said CoC could not be as a result of the above reasons.

    Or am i missing something again?
    Last edited by 123; 09-Feb-11 at 05:32 PM. Reason: spelling
    If it is not broken, fix/test it until it is.
    This is my opinion and I stick to it.

  5. #15
    Diamond Member AndyD's Avatar
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    ^^^ So, you're saying you would pass that luminaire for COC purposes as it's shown in the photo???
    _______________________________________________
    I am special and so is Vanash.
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  6. #16
    Email problem 123's Avatar
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    Quote Originally Posted by AndyD View Post
    ^^^ So, you're saying you would pass that luminaire for COC purposes as it's shown in the photo???
    YES. The LUMINAIRE would pass by means of its SABS approval. It is not the purpose of the CoC to pass Luminaires. It is, actually, EXCLUDED on the CoC itself: See Note 3 on CoC form page 2.

    And Yes, I would sign a CoC based on the photo for that specific issue. Unless there is some hidden/other issues not stated in this forum. The temperature of the exposed part of the cable (70C) has no influence re the CoC according to the law. The code states: It "should", and not it "shall". So, if push comes to shove, any reasonable judge must come to such logical conclusion if, ever, such a case might end up in court.

    And, fiy, a 230V 60W incandescent lamp (Ready Light), or a 100w bulkhead bottle, generates far more heat (Flir i60) than a 50 watt gu10 downlight lamp. But still, both the aforementioned is legally wired with pvc copper stranded wire, right into the said lamp, into the connectors, exposed to 84.5 C (Average: Flir System i60), in ALL OF THE INSTALLATIONS In SA.

    Houston, ......
    Last edited by 123; 09-Feb-11 at 08:38 PM.
    If it is not broken, fix/test it until it is.
    This is my opinion and I stick to it.

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    and there is a cover fitted...unless the person regards the entire roof space as a junction box....as mentioned in other debates...which i dont agree with...becuase there are other people and services in the roof space so anyone can climb into the roof and work...if the roof space is inaccessable thats a whole different ball game.

  8. #18
    Email problem 123's Avatar
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    [Murdock said: ........ so anyone can climb into the roof and work....]

    Yes, so true. Anyone can climb into the roof and work.....but....still...they would all need a TOOL to get into the roof, except if they can fly, levitate, or lie.

    Anyway, who's all going to the Buff? (Bike Rally in Mosselbay?)

    Poison Rally was a KILLER :-) ⌂⌂⌂⌂ ††††

    hehe....
    Last edited by 123; 09-Feb-11 at 08:59 PM. Reason: yamaha warrior 1700
    If it is not broken, fix/test it until it is.
    This is my opinion and I stick to it.

  9. #19
    Site Caretaker Dave A's Avatar
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    Quote Originally Posted by 123 View Post
    Houston, ......
    You said it. I'm watching this thread with great interest. There's a small matter of length of downlighter tails vs exposed wiring floating around at the back of my mind at the moment as I'm reading this.

  10. #20
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    Quote Originally Posted by Dave A View Post
    There's a small matter of length of downlighter tails vs exposed wiring floating around at the back of my mind at the moment as I'm reading this.
    ??

    Pse Elaborate: Me
    If it is not broken, fix/test it until it is.
    This is my opinion and I stick to it.

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