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Thread: DB wiring and CoC

  1. #1
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    DB wiring and CoC

    Greetings,

    I have an old (well, 21/22 year old) townhouse with three-phase electricity supply from the City of Joburg. All the wires in the DB board are solid copper conductors. For some reason, however, when the house was built in 1996 ,the builders/electricians only used red PVC insulated wires.... No other colours! My electrician tells me that he cannot issue a CoC due to the color-coding issue and what the "electrical code" says (he does say that the wiring itself is properly done).

    Are there any contrary views? Do I have to shell out a few thousand precious Rands for the re-wiring of the DB?

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    Hi

    reading between the lines and would not want to say anything until I saw a picture of the DB wiring .
    Could you possibly post a photo of the DB internal wiring

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    Good day,
    I copied this out of SANS 10142-1 2017
    6.3.3.2 The means of identification for an a.c. circuit may be by colours or
    by numbers, as follows:
    a) where colours are used
    1) a neutral conductor shall be identified by black only,
    2) an earth continuity conductor shall be identified by the bi-colour
    green/yellow only, or by being bare. Green/yellow insulated
    conductors shall NOT be used as live conductors under any
    circumstances,
    3) a phase conductor shall be identified by a colour other than
    green/yellow, green or black, and
    NOTE Welding cable manufactured to SANS 1576 should not be used in
    circuits above 100 V.
    4) the colours may be applied at the ends of the conductor (of a
    multicore cable) by means of durable colour marking (e.g. insulating
    sleeves or by electrical insulating tape wound more than once around
    the conductor), and
    b) where numbers are used, "0" shall indicate the neutral conductor.
    NOTE Where the purpose or the function of a conductor is apparent, marking is
    not required.

    From what is printed in the standard, it does not state that each phase conductor should be a different colour.
    I could be wrong.

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    Diamond Member AndyD's Avatar
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    Ask the electrician for the regulation he's enforcing. Even if there is a reg, rewiring certainly isn't necessary. The phase colour can be indicated by a band of tape or heat shrink sleeve or even coloured cable straps at the point where the wire terminates.
    _______________________________________________
    I am special and so is Vanash.
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    BD Board pics

    Quote Originally Posted by GCE View Post
    Hi

    reading between the lines and would not want to say anything until I saw a picture of the DB wiring .
    Could you possibly post a photo of the DB internal wiring
    Pics attached.
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    Hi

    Dont see the need for a rewire
    The regulation posted above by Hotspot should sort out any argument - All the live wires are red which is not an issue .

    Without going into details there are a couple of things to be sorted out on the DB , but complete rewire of the installation is a no.

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    Thanks all... Much appreciated.

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    Looks better than a lot of DB installation i get to see on a daily basis.

    I think you need to get a second opinion.

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