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Minimum Number of Circuits Competition in a Domestic Dwelling.

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I am starting a competition for all forum members as to the least number of final circuits found supplying a domestic residential installation.


Yesterday I worked in a bungalow that has three final circuits at the consumer unit supplying the whole domestic bungalow.


1. Lighting.


2. Sockets.


3. Shower.


The lighting circuit supplied the whole building.


The sockets were supplied by a B32 M.C.B. and comprised two ring finals circuits bunched together. (Which I later separated).


The shower might have been the old cooker circuit as the bungalow had no cooker circuit. It had a gas cooker.


So who can beat that?


Z.
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    pretty much like mine, except the light switches werent in the individual rooms, they were all together in a big plate in the hall


    it did have a 30a upgrade on the 15a radial though ?
  • Former Community Member
    0 Former Community Member
    The smallest fuse box I have seen in a house / flat is a 2 way metal mem board. With 2 fuses 1 - 15a and 1 -5a


    1 light and 1 - single socket per room including the kitchen 


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    I'm going to cheat a bit and go for a construction site installation with one double socket which supplied the house via a couple of extension leads (in series). ?
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    I did a installation certificate and a EICR as requested by an insurance company when I stripped out an installation apart from the tails, consumer unit, main earth conductor and rod, then installed one double socket.


    So is anyone going lower than one circuit with one fitting?


    Andy
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    So Johno is claiming 2 and Broadgage is claiming 1. Do we agree. Do we have winners?


    Z.
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    its got four now, a main board and three submains. not sure how many ways, 18 each or something like that. 


    got a free service upgrade, from double pole 30a rewirable, to 100a (def 100, i checked) when the head melted.
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    Johno12345:

    My house had a 15a radial for sockets, and a 5a for lights.


    built in 1958




    If you upgrade the consumer unit to one with a 2-mod DP main switch, a 2-mod DP surge protection device and two 2-mod combined RCBO AFD devices you will still need a 8-mod CU that is considerably bigger than what is there now.


    Andy  

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    My house had a 15a radial for sockets, and a 5a for lights.


    built in 1958
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    I did one with only a single 230 volt circuit, a 32 amp ring final.

    And one 12 volt circuit, a 10 amp radial for lighting.

    No mains electricity supply. The 32 amp circuit was equipped with a 32 amp Ceeform inlet for connection of a generator. The 12 volt circuit was terminated in a pair of battery clamps. Tenant to supply generator and 12 volt battery.
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    Zoomup:




    Alasdair Anderson:




    Zoomup:



    Hello Alasdair,

                           the judges seem to be a long time discussing the wind-up radio.



    The question was final circuits and the wind-up radio is only a consumer - maybe it counts as half a final circuit.....


     




    You seem to be much too bright for this class Alasdair, I think that we will put you up to Mr. Stern's class next year. Wind-up radios, consumers indeed. What ever next. And where's last week's homework? Has anybody got any sensible answers here? And just to think that I could have been a vet.


    Z.


     




    Hello Andy,

                        the most important thing about the Wylex video which you kindly linked to is this:


    Why is the dad at the beginning of the video still bottle feeding his boy? The boy is old enough to drink from a cup.


    Also, why is the lazy man's way of terminating the c.p.c.s used in the new Wylex consumer unit, I always double over the ends to ensure a good termination. If installed singly the copper conductors can be loosened with movement and be unreliable. 


    If the new devices automatically switch off, we are not really sure why. With separate devices fault finding is easier as the device often indicates the type of fault. Or do these devices have an L.E.D. flash code as to the type of fault that has caused them to turn off? Imagine getting the customer to explain this over the phone. These days if an R.C.D. trips off we can talk the customer through the initial fault finding/rectification process over the phone. This often prevents a long journey, and then when we get there the customer says: "Oh, it's alright now we found the problem....didn't Tom contact you?"


    When the price drops by 80 per cent I might be tempted.


    With single multi-protection devices, if one aspect of them fails, the whole device has to be renewed. Hardly green is it?


    Z.








     

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