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Parallel TX Tails - Neutral Arrangement

MW (aka Inrush - for those who remember me!)
So this is the new look forum... Impressive!


I have a question regarding AWA transformer tails. I'm looking at a situation where I need three parallel cables per phase.


My question is related to the neutral conductor arrangement. The neutrals need to be installed between the inter-group trefoils in order to maintain equal current sharing. Therefore, I can either have two neutral conductors of slightly larger CSA to give approx. the same CSA as the overall parallel phase conductors. Or, alternatively, three neutrals of the same CSA as the phase conductors split (oddly) between the two groups.


What convention is normally adopted in this situation?


Many thanks in advance.
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  • 0
    "Thanks, planning to solid bond the armour."

    I recall being advised that you can use the unarmoured cable rating if you single point bond the armour. This can make quite a difference but have it confirmed first!

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  • 0
    "Thanks, planning to solid bond the armour."

    I recall being advised that you can use the unarmoured cable rating if you single point bond the armour. This can make quite a difference but have it confirmed first!

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