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Is there a maximum length for a spur cable?

Former Community Member
Former Community Member
Good afternoon, hope you are all well.

Just two quick questions.

Is there a maximum length for a 2.5mm twin and earth spur cable terminated in a ring final wall socket?

Is there a maximum length for a 2.5mm twin and earth spur cable terminated in the Consumer unit RCBO which also supplies a ring final. I understand that there can only be one spur cable from the RCBO. So max three cables in RCBO. 


As always, many thanks in advance.

Simon

Parents
  • Former Community Member
    0 Former Community Member
    Hi everybody, thanks for taking the time to reply, as a non-electrician, I'm learning a lot.


    The spur from the socket is at the mid/far point of the ring final and will be approx 2m long, serving a home computer, which is turned off most of the time. The spur from the RCBO will be about 8m long as it will be running in loft space, so will definitely need to be metal clipped. It will be serving the TV and Sky box, which are also turned off a lot of the time. To be clear, I'm just running the cable in my small bungalow (78m square)  and I will get an electrician to connect everything as mentioned in my earlier post today about collapse of cable in floor voids in bungalows.


    Kind regards to you all

    Simon
Reply
  • Former Community Member
    0 Former Community Member
    Hi everybody, thanks for taking the time to reply, as a non-electrician, I'm learning a lot.


    The spur from the socket is at the mid/far point of the ring final and will be approx 2m long, serving a home computer, which is turned off most of the time. The spur from the RCBO will be about 8m long as it will be running in loft space, so will definitely need to be metal clipped. It will be serving the TV and Sky box, which are also turned off a lot of the time. To be clear, I'm just running the cable in my small bungalow (78m square)  and I will get an electrician to connect everything as mentioned in my earlier post today about collapse of cable in floor voids in bungalows.


    Kind regards to you all

    Simon
Children
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