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Help with installation / diagram

Former Community Member
Former Community Member
Hi,


I am after some help with a heated windows installation / diagram - grateful for any input.

Unfortunately, the company supplying the installion went bust and I have been left with a system that doesn't  work (incorrectly designed).

We had a local electrician do the first fix wiring based on the diagrams but he says what has been sent won't work in it's current state and he doesn't have the relevant expertise to adjust it.

We live in a rural area and electricians are not that common especially for something as complex as this.

Rather than post up the diagrams and go into too much detail initially, I just wanted to know if this is a place to ask for advice and if not could anyone point me in the right direction. e.g contact details for an electrical engineer.


Thanks.
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    As I carefully and straighforwardly pointed out before, if the windows do have the IR reflective coating on the outside pane you will not get huge solar heat gain from most of the spectrum. I doubt that heat will be the problem and anyway the ventilation system should be able to deal with that with suitable controls. I don't see why you have temperature sensors near the windows either, you will never get too much heat from the glass unless the whole room is too hot, and with the power rating and safe surface temperature requirments it is not possible. I am with Mike that you may have something which does not work.


    There is a second point, and that is that everything past your control cabinet intake is an "appliance" and not really fixed wiring. Each window is not separate if they are in series. BTW flexible cables may be used anywhere you like given ratings etc. they should not have to be replaced at all. The whole system should have RCD protection at 30 mA. There is nothing wrong in following BS7671 for the wiring, in fact it is probably a good idea, but you do have a slightly strange beast here!
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  • 0
    As I carefully and straighforwardly pointed out before, if the windows do have the IR reflective coating on the outside pane you will not get huge solar heat gain from most of the spectrum. I doubt that heat will be the problem and anyway the ventilation system should be able to deal with that with suitable controls. I don't see why you have temperature sensors near the windows either, you will never get too much heat from the glass unless the whole room is too hot, and with the power rating and safe surface temperature requirments it is not possible. I am with Mike that you may have something which does not work.


    There is a second point, and that is that everything past your control cabinet intake is an "appliance" and not really fixed wiring. Each window is not separate if they are in series. BTW flexible cables may be used anywhere you like given ratings etc. they should not have to be replaced at all. The whole system should have RCD protection at 30 mA. There is nothing wrong in following BS7671 for the wiring, in fact it is probably a good idea, but you do have a slightly strange beast here!
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