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  1. S

    CPC size of SWA Armouring

    Davesparks i was referring to table 54.7 of bs7671 which states if S>35 and the protective conductor is the same material as the line conductor this is S ÷ 2 S = 50mm 50 ÷ 2 = 25mm
  2. S

    CPC size of SWA Armouring

    Thanks guys appreciate the help, I'll double check the calcs tomorrow regarding disconnection time
  3. S

    CPC size of SWA Armouring

    Evening, Just joined upto this forum after a search online for some info, hopefully someone can help me? I have taken over a job from another contractor who has run in a 50mm 4 core swa from a substation to a TP&N DB roughly 100m away. My concern is that it appears they have not run a separate...
  4. S

    How big must the earth conductor be ???

    Evening, Just joined upto this forum after a search online for some info, hopefully someone can help me? I have taken over a job from another contractor who has run in a 50mm 4 core swa from a substation to a TP&N DB. My concern is that it appears they have not run a separate earth and are...

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