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S.W.A. Cables in Parallel.

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I have installed two 3 core 6.0mm2 S.W.A. cables in parallel for ease of installation, fused at 60 Amps.  The run is about 20 metres. They are single phase connected. I use Brown as L, Black tagged blue as N and grey oversleeved green and yellow as C.P.C. in each cable.


I have bonded the armour at each end and it is earthed at the origin of the circuit.


I have a niggling feeling that I have missed something. Is the above o.k?


Z.
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  • 0
    alanblaby:

    Grey is usually used as neutral, and black as CPC.

    Twin 6mm 3 cores?

    It would be far easier to run one 2 core 10mm, or even 1 x 2 core 6mm if clipped direct.

    This is basic stuff.


    Why?


    Yes it is the usual Zoom,


    One theory is that it is to dissassociate Black from N but in my world if you thing Red Yellow Blue then think Brown Black Grey you`d probably decide for Grey (oversleeved Blue) to be N . In the old R Y B many would use Blue nonsleeved as N because "it is a N colour as in Flexes" but that was a bit nawty not to oversleeve.

    In the Br Bk Blu system Black is oft oversleeved Brown as say a switched L with Brown as the Perm L similar to what you`d have done in the R Y B system. (where you be tempted to use Y (oversleeved) as the cpc or in new money the Black as Alan has said


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  • 0
    alanblaby:

    Grey is usually used as neutral, and black as CPC.

    Twin 6mm 3 cores?

    It would be far easier to run one 2 core 10mm, or even 1 x 2 core 6mm if clipped direct.

    This is basic stuff.


    Why?


    Yes it is the usual Zoom,


    One theory is that it is to dissassociate Black from N but in my world if you thing Red Yellow Blue then think Brown Black Grey you`d probably decide for Grey (oversleeved Blue) to be N . In the old R Y B many would use Blue nonsleeved as N because "it is a N colour as in Flexes" but that was a bit nawty not to oversleeve.

    In the Br Bk Blu system Black is oft oversleeved Brown as say a switched L with Brown as the Perm L similar to what you`d have done in the R Y B system. (where you be tempted to use Y (oversleeved) as the cpc or in new money the Black as Alan has said


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