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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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    Not familiar that SW,  but does that not have the option to put 1.5mm with a plus sign or a greater than or equals equals sign ?
    If not then put the lower of the two and add a note elsewhere - and if the SW does not allow you to attach notes then it really is no use, and you should send it back !

    record the r2 you measure. unless you know the split geometry well enough thta you have the two lengths, then there is not a lot of point in trying to generate an accurate  predicted value. all it needs to be is low enough that when combined the Zs the RCD will trip.

    Mike

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  • 0

    Not familiar that SW,  but does that not have the option to put 1.5mm with a plus sign or a greater than or equals equals sign ?
    If not then put the lower of the two and add a note elsewhere - and if the SW does not allow you to attach notes then it really is no use, and you should send it back !

    record the r2 you measure. unless you know the split geometry well enough thta you have the two lengths, then there is not a lot of point in trying to generate an accurate  predicted value. all it needs to be is low enough that when combined the Zs the RCD will trip.

    Mike

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