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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

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    It is unlikely that a spur will ever be too long in the average U.K. house.



    But might be if it's running down the garden to the shed....


    The OSG lists maximum cable lengths for rings for various situations - if you're within a quarter of that length for your spur originating at the CU you should be fine.


       - Andy.

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  • 0

    It is unlikely that a spur will ever be too long in the average U.K. house.



    But might be if it's running down the garden to the shed....


    The OSG lists maximum cable lengths for rings for various situations - if you're within a quarter of that length for your spur originating at the CU you should be fine.


       - Andy.

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