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Why isn't there a 3186Y Cable (6-core)

AncientMariner
Why isn't there a 6-core cable in the 318nY style, ie 3186Y?


There is a 3185Y 5-core where the cores are Black, Blue, Brown, White & Green/Yellow and a 3187Y 7-core where the cores are Black, Blue, Brown, Grey, Red, White & Yellow.


Also a 5-core cable where one of the cores is NOT Green/Yellow?


It will, I guess, be down to demand, but for rewiring say a Siemens Wireless Thermostat where the Receiver Unit needs L + N  together with c + n/o & n/c  a simple 5-core cable would be so much more straightforward.


(Due to occasional unreliability, I need to re-position the Receiver Unit the other side of a brick wall lined with foil backed plasterboard.)


Clive
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    Wouldn’t only be required for an appliance that heats and cools to maintain temperature within a specified range?



    Some motorised valves (e.g. some 3-port mid-positions ones) need a 'satisfied' signal to drive the motor to close one of the ports when no longer needed - the spring return only operating in one direction and so only works for one port.

      - Andy.

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  • 0

    Wouldn’t only be required for an appliance that heats and cools to maintain temperature within a specified range?



    Some motorised valves (e.g. some 3-port mid-positions ones) need a 'satisfied' signal to drive the motor to close one of the ports when no longer needed - the spring return only operating in one direction and so only works for one port.

      - Andy.

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