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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
  • 0
    Section 7.2.2 of the OSG says 'as a rule of thumb for rings, unfused spur lengths should not exceed 1/8 the cable length from the spur to the furthest point of the ring'.


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  • 0
    Section 7.2.2 of the OSG says 'as a rule of thumb for rings, unfused spur lengths should not exceed 1/8 the cable length from the spur to the furthest point of the ring'.


    F
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