HO7RNF Cable vs US equivalent

H077RNF http://titanex.nexans.com/uk/technical-specifications.php is used a lot a lot in the entertainment industry. The North Americans use a similar cable https://www.farnell.com/datasheets/1562972.pdf (Page 5) but it has a paper separator between the cores. Often seen the US cable come to the UK on tours but was curious to see if it satisfies BS7671?  

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  • the biggest problems are likely to be

    1) The non-standard colours of the cores - here brown is live and blue is neutral, and earth is indicated by green and yellow stripes. White black and green are not quite the same. However, oversleevng at the ends may be enough to comply,

    2) the non standard way of expressing voltage ratings - we'd expect to see two figures, a core to ground rating and a core to higher core to core figure - e.g.300/500 or 600/1000.

    So some work would be needed to verify equivalent level of safety, though I suspect that in practice of course a serous problem is very unlikely, and arguably as  the appliance flex is not normally considered part of the fixed installation, BS7671 is not that relavant, far more serious is the change of voltage and the various phase arrangements that larger US machines expect.

    Mike.

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  • the biggest problems are likely to be

    1) The non-standard colours of the cores - here brown is live and blue is neutral, and earth is indicated by green and yellow stripes. White black and green are not quite the same. However, oversleevng at the ends may be enough to comply,

    2) the non standard way of expressing voltage ratings - we'd expect to see two figures, a core to ground rating and a core to higher core to core figure - e.g.300/500 or 600/1000.

    So some work would be needed to verify equivalent level of safety, though I suspect that in practice of course a serous problem is very unlikely, and arguably as  the appliance flex is not normally considered part of the fixed installation, BS7671 is not that relavant, far more serious is the change of voltage and the various phase arrangements that larger US machines expect.

    Mike.

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