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Ring Circuit - 2 x 2.5mm Live Conductors but the CPC has two different leg sizes - 1st leg is 1.5mm and 2nd leg is 2.5mm

ElectricalCuriousity

Hello

On an EICR carried out, I found the following below.

Line Conductors - 2.5mm

CPC Conductors - 1st Leg = 1.5mm, 2nd Leg = 2.5mm.

Although it isn't best practice, is there actually anything wrong/non compliant with the reduced CPC on one of the legs? I can't seem to find any issues with this in the regs.

Thank you in advance.

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    I reckon it is the minimum size that is important in a cpc. Providing the min size is adequate in all places then yes fine.

    "oversized" does not hinder that. Are we bothered in balances on the ring (or a radial part of it) having a lower impedance? I think not.

    I can not see any issue with it.

    Likewise with parallel paths, doing more good than harm.

    Is its appearance or its measurement likely to mislead anyone? Probably not in practice to anyone with a reasonable amount of competence

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  • 0

    I reckon it is the minimum size that is important in a cpc. Providing the min size is adequate in all places then yes fine.

    "oversized" does not hinder that. Are we bothered in balances on the ring (or a radial part of it) having a lower impedance? I think not.

    I can not see any issue with it.

    Likewise with parallel paths, doing more good than harm.

    Is its appearance or its measurement likely to mislead anyone? Probably not in practice to anyone with a reasonable amount of competence

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