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Extra Low Voltage (ELV)

Former Community Member
Former Community Member
Guys,


BS7671:2018 is classing cables extra low voltage (ELV) as an operating voltage not exceeding 50Vac or 120V ripple-free dc.


BS7671 goes on to further categorize ELV cables into SELV, PELV, FELV.


For single core green/yellow insulated equipotential bonding cables lets say originating from an earth bar and bonding some structural steel work, are these classed as FELV under BS7671:2018 ?
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    Mike M:




    Zoomup:

    Mike, we normally use green and yellow insulated 6491X cables for main and supplementary bonding purposes. It meets all normal requirements for that use to comply with B.S. 7671. In other colours it can be used in metal conduit and trunking, and sometimes in plastic containment as well.

    https://www.ukcables.co.uk/cables/6491x



    Z.




    I do not see how that relates to me wanting to establish which category a single core green/yellow insulated equipotential bonding cables originating from an earth bar and bonding some structural steel work belongs to be it LV, RLV, SELV, PELV, FELV. That gives you 5 possible answers, I'm not sure why you are talking about common uses for 6491X cables.


     




    Why do you need a category Mike. Just apply standard practice.

    https://www.youtube.com/watch?v=a5JOTA-mJ4A


    Z.

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  • 0

    Mike M:




    Zoomup:

    Mike, we normally use green and yellow insulated 6491X cables for main and supplementary bonding purposes. It meets all normal requirements for that use to comply with B.S. 7671. In other colours it can be used in metal conduit and trunking, and sometimes in plastic containment as well.

    https://www.ukcables.co.uk/cables/6491x



    Z.




    I do not see how that relates to me wanting to establish which category a single core green/yellow insulated equipotential bonding cables originating from an earth bar and bonding some structural steel work belongs to be it LV, RLV, SELV, PELV, FELV. That gives you 5 possible answers, I'm not sure why you are talking about common uses for 6491X cables.


     




    Why do you need a category Mike. Just apply standard practice.

    https://www.youtube.com/watch?v=a5JOTA-mJ4A


    Z.

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