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Ring Final

With reference to 433.1.204 and cable as installed has min capacity of 20A if protected by a 30A or 32A. If the protective device is reduced to 20A how is the new minimum as installed capacity calculated or arrived at ? I've been looking in the Electrical Installation Design Guide, but the answer is avoiding my eyes.
Parents
  • " I can't imagine that many sparks in the heart of battle (or any other southern town for that matter ) bother to think about spreading the sockets around the ring, although there are rules of thumb, like twisting the ring when you have a situation like a  long corridor so that sockets 1,3,5 are one  one leg of the ring, and sockets 2,5,6 are on the other. "


    Hoy !      I do
Reply
  • " I can't imagine that many sparks in the heart of battle (or any other southern town for that matter ) bother to think about spreading the sockets around the ring, although there are rules of thumb, like twisting the ring when you have a situation like a  long corridor so that sockets 1,3,5 are one  one leg of the ring, and sockets 2,5,6 are on the other. "


    Hoy !      I do
Children
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