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  • #767413
    robertarthur
    robertarthur
    Participant
    Joined: 29 Nov 2010
    Location: Nièvre (58)
    Total posts: 2157

    Minister Arnaud Montebourg should be proud of this French invention: the télérupteur. There are rumours however that his socialist friends in East Germany were first, with even more clever solutions, but that’s for Wikileaks to bring to the attention of the public at large.

    How to wire these télérupteurs? Two diagrams: 3- wire and 4-wire. The obvious advantage of the 3-wire method is less wiring, and you can do it “local”: in the neighboorhood of the switches – boutons poussoir – and the lighting.

    But personally I prefer the 4-wire approach, for several reasons. Not for the first time the telephone rang: Robert, il-y-a un problème ici avec l’éclairage. Went over, and finally discovered, after constructing a pathway in the attic with beams and floorboards, an open boîte, et le voila: a suitable case for treatment, a télérupteur with a burnout. The familiar block type, for use in boîtes that take you sometimes hours to discover where they are hiding. But looking at this picture: they have been lucky there, could have started a fire. And they would have noticed it much too late: no early warning smell of something going wrong. That’s one of the reasons why I prefer the more expensive 4-wire method, with télérupteurs in the consumer unit. Easier access, and with the benefit of an earlier feedback (smell) if something goes wrong.

    Why did it go wrong in this case? Perhaps overheating because of a too high contact resistance, almost loose connection. You should not try to overtighten, but some force required. And in this case possibly a combination of factors: there was also a prise commandée connected to this circuit, not anymore now. Only for lighting purposes, but not everybody knows. Easy to overload in the long run such a télérupteur of only 10 amp, feeding such a special socket. RA


    RA

    #1118581

    jeff58
    Participant
    Joined: 01 Mar 2011
    Location: SW Haute Vienne, 87 (close to 24 and 16)
    Total posts: 1027

    Robert, on mine, it’s wired like that.
    It can be controlled from any one of four positions, but ONE of them doesn’t always result in it operating. A firmer push rectifies the fault.

    I assume this will be down to a poor bouton poussoir?

    They are Legrand surface mount, as is the TR.


    #1118582
    robertarthur
    robertarthur
    Participant
    Joined: 29 Nov 2010
    Location: Nièvre (58)
    Total posts: 2157

    A push button that has seen better days (or loose contact?). Even the high quality switches of Legrand have no Eternal Life. Sometimes a little bit of bending of the contacts inside + cleaning can prolong useful life, depends on mechanical construction. Do not overbend: a permanent “on” status of such a bouton poussoir will overheat the relay coil inside your télérupteur, and that will be the end of the poor thing. RA


    RA

    #1118583

    jeff58
    Participant
    Joined: 01 Mar 2011
    Location: SW Haute Vienne, 87 (close to 24 and 16)
    Total posts: 1027

    Thankyou, I think it can be replaced next time I’m out there.


French Electrical & Other Building Issues
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