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EV Ultra Cable ( SWA 3 core with Cat 5). Termination ?

JHFE

Looking at EV Ultra SWA 3 core cable with Cat 5 data and is raising a few questions.

It is aimed at EV charging installations, however…..

At some point that cable has to enter an enclosure and be terminated.  This could be directly into an EV charger, designed to take the cable, but it could also potentially be terminating at the power source end, into an enclosure with power terminations for the 3 cores ( line conductors and CPC ), e.g. a consumer unit.  

It just seems a bit iffy to have a data cable ( by now unsheathed and stripped back )  entering a consumer unit.  A data cable that has a conductive shield.

Is anyone aware of any regs that specifically allow or prevent this situation?  or is the case of  “allow” is that covered by section 134 and regs such as 134.1.1 “Good workmanship….proper materials……manufacturers' instructions.”  e.g. power elements and SWA terminated to CU with a gland, data cable suitably sheathed ( sleeved ) as it makes it's way back out of the CU to an appropriate ethernet connection?

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    Ok,  I think perhaps I could have worded that better - I agree the authors of the Chenglish sort of instruction ‘do not teach these fairy lite to swim’  and similar needs to be treated with the contempt they deserve.

    But,  if the cable makers say that they have tested the isolation from the mains part to the data part at the same standard at 1kV or whatever, and there is evidence that it is a maker we trust, not just some 3rd world re-badge merchant, then we should be able to follow that, treating the segregation in-cable as we would treat segregation in trunking.

    So I reword thus, I have no difficulty in ignoring a EU or BSI standard that did not foresee the current situation, providing the same level of safety is maintained by another method.

    Edit  A link to the maker's data sheet

    And a picture No need to remove the jacket and screen of the data cable until well away from the main cores.

    If the standard thinks this construction is unsafe because of the risk that mains will end up on the data lines, the standard is probably not right. If it is a good idea for EMC over a long run, I am much less sure.

     

    c566b7ae53476d04ccc1d5e99b7bbd6c-original-ev-cable.jpg

     

    Mike

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  • 0

    Ok,  I think perhaps I could have worded that better - I agree the authors of the Chenglish sort of instruction ‘do not teach these fairy lite to swim’  and similar needs to be treated with the contempt they deserve.

    But,  if the cable makers say that they have tested the isolation from the mains part to the data part at the same standard at 1kV or whatever, and there is evidence that it is a maker we trust, not just some 3rd world re-badge merchant, then we should be able to follow that, treating the segregation in-cable as we would treat segregation in trunking.

    So I reword thus, I have no difficulty in ignoring a EU or BSI standard that did not foresee the current situation, providing the same level of safety is maintained by another method.

    Edit  A link to the maker's data sheet

    And a picture No need to remove the jacket and screen of the data cable until well away from the main cores.

    If the standard thinks this construction is unsafe because of the risk that mains will end up on the data lines, the standard is probably not right. If it is a good idea for EMC over a long run, I am much less sure.

     

    c566b7ae53476d04ccc1d5e99b7bbd6c-original-ev-cable.jpg

     

    Mike

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