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How to wire up a consumer unit

Arran Cameron

A semi-detached house has a prehistoric fuse box with rewirable ceramic fuses. It will shortly be replaced with a modern consumer unit. The existing circuits are:



 



1. Lights



2. Upstairs sockets



3. Downstairs sockets



4. Kitchen sockets



5. Cooker



6. Shower



 



The following circuits will be added to the consumer unit:



 



7. Central heating



8. Burglar alarm and CCTV



9. Outside lights



 



I have been informed that the best choice is a split load consumer unit with two RCDs and space for RCBOs. My intention is that circuit 8 has its own RCBO but what is the optimal way to allocate circuits to RCD A and RCD B? Also, should any other circuits have their own RCBO?


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  • 0
    MEM  61008 RCDs use the same tripping method. Centre off and tripped. To reset turn off then fully on again.


    This job appears to have been running for along time. I assume the house is now built? ..... lol.

    By the way, where have you put the smoke alarms and CO2 alarms? separate circuit or connected into existing circuits?

    I once put the house smoke alarms on the same circuit as the fridge freezer radial covered by a B16A RCBO. Still seems to be Ok.


    Legh


Reply
  • 0
    MEM  61008 RCDs use the same tripping method. Centre off and tripped. To reset turn off then fully on again.


    This job appears to have been running for along time. I assume the house is now built? ..... lol.

    By the way, where have you put the smoke alarms and CO2 alarms? separate circuit or connected into existing circuits?

    I once put the house smoke alarms on the same circuit as the fridge freezer radial covered by a B16A RCBO. Still seems to be Ok.


    Legh


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