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Application of BS7671 Table 54.7

McN41R

Can anyone offer experience on the application of Table 54.7 for Main Earth size on non PME supplies for supplies that have parallel incoming cables.

For example, 2 x 185mm2 PCV/SWA installed in separate ducts.

Thanks

Parents
  • 0

    Point rightThis question is with respect to understanding the application of:Point left

    • Table 54.7
    • Parallel incoming cables.
    • Non PME supplies (so all supplies other than TN-C-S)

    Point rightThis question does is not with respect to:Point left

    • Adiabatic equation
    • The most economical application
    • any specific size of cable
    • single cables
Reply
  • 0

    Point rightThis question is with respect to understanding the application of:Point left

    • Table 54.7
    • Parallel incoming cables.
    • Non PME supplies (so all supplies other than TN-C-S)

    Point rightThis question does is not with respect to:Point left

    • Adiabatic equation
    • The most economical application
    • any specific size of cable
    • single cables
Children
  • 0 in reply to McN41R

    If you can tell us clearly what you don't understand, there is a possibility of explaining it.

  • 0 in reply to Chris Pearson

    I think I have provided a simple question that the IET finest should not have a problem with. I have nothing more to add.

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