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  • #1820135
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    indigojake
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    Joined: 04 Mar 2013
    Location: Vaucluse
    Total posts: 6

    I’m about to install an electric hob in our kitchen to replace a bottle gas stove that was there before.

    My question is about the 6mm2 supply cable, as this is the one part that seems unclear from my various books on the French Norm. My local bricolage seems to offer two alternatives, but no reliable advice.

    1) H07 VR 6mm2 single core stranded conductors for each of phase, neutral and ground – and I would presumably need to pull the three cables though 25mm gaine

    2) R2V 3x6mm2 three core composite insulated cable, which presumably doesn’t need gaine or goulotte

    Am I correct that I could just run the R2V composite cable through the attic, down behind some plasterboard and along the surface of the kitchen wall, all without it being in any sort of gaine or goulotte?

    And if so, is there any reason I shouldn’t mix the two systems? For example, use H07 VR single core cables in D25 flexible gaine from the tableau to an exposed junction box in the attic, then R2V cable down into the kitchen and around the wall? If so, this looks like my cheapest and least disruptive solution.

    Any advice would be much appreciated, and please excuse the Franglais – it seems to make more sense that way.

    Best wishes to all – Jeremy


    #1820174
    badger
    badger
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    Joined: 04 Dec 2008
    Location: Near Vire (14)
    Total posts: 1408

    For example, use H07 VR single core cables in D25 flexible gaine from the tableau to an exposed junction box in the attic, then R2V cable down into the kitchen and around the wall? If so, this looks like my cheapest and least disruptive solution.

    That would be absolutely fine. However, I’d discourage having joints in anything with high current potential like this i.e. the best solution would be to do it all in one method or the other. If you do use R2V cable then it must be protected by gaine where it passes through any masonry or metal, but not anywhere else.

    As a side issue, the 32A hob circuit must be protected via a Type A interdiff, not an AC.


    Jonathan Badger - St Germain de Tallevende 14500 http://www.badgerlx.fr

    #1820182
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    indigojake
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    Joined: 04 Mar 2013
    Location: Vaucluse
    Total posts: 6

    Many thanks for your quick response.

    I guess my thinking in using both methods and joining them through a junction box, was that every other circuit coming down into the tableau is via 3 x single core in gaine, and so it seems inconsistent – visually at least – to have a black PVC composite cable mixed up with them.

    But I realise the inconsistency makes no technical difference, and since you suggest that an unnecessary joint in a cable run like this is unadvisable, I’ll use the R2V for the whole job. Although I don’t quite understand why such a joint would be a problem, I’ve always felt the shortcut to wisdom is to seize the advice of those who clearly know much more than I do.

    So thanks again for your help and advice. Very best wishes – Jeremy


    #1820183
    badger
    badger
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    Joined: 04 Dec 2008
    Location: Near Vire (14)
    Total posts: 1408

    Although I don’t quite understand why such a joint would be a problem….

    With a decently done connection there would probably never be a problem – it’s just nice to eliminate as many potential weak points as possible, especially when high loads are involved. It’s also less work not to have the junction :-)

    I like your concern to keep things looking consistent at the board though :good:


    Jonathan Badger - St Germain de Tallevende 14500 http://www.badgerlx.fr

French Electrical & Other Building Issues
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