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Cable Standards and Selection

Chris Bailey

Hi 

Would be grateful for some guidance on cabling standards/selection

Currently developing an large energy storage system and equipment is coming from all over the place.

I seem to be struggling to get European suppliers of equipment to comply with British standard cabling such as shown in Table 4A3. I keep on getting thrown all sorts of weird and wonderful cable datasheets, all with IEC standards but no ref to BS or BS EN that I am comfortable or familiar with. We have clearly specified BS7671 as the standard to be followed but there seems to be a reluctance to adhere to this.

Example

Power cables 2XY-fl RM 2x2,5mm² (bk)

Instrument cables   RE-2X(St)Yv-fl 1x2x1.0mm² (bk/bu)

Would other non BS cables be accepted in the UK and signed off and what are the implications in not following cable recommendations in table 4A3? 

kind regards

Chris

Parents

  • Is this the internal wiring of equipment or fixed installation wiring between different items of equipment? If the former then BS 7671 probably isn't the appropriate standard (black for both poles of power sounds like equipment wiring to me).

    If BS 7671 is appropriate then forget 4A4 - that's part of appendix 4 which is just "informative" so isn't part of the definition of the standard (normative). For compliance with standards 133.1 is probably a good start - i.e. comply with a BS or HD or failing that IEC or appropriate standard of another country (but see lots of discussions about the use of SY cable...).

       - Andy.

Reply

  • Is this the internal wiring of equipment or fixed installation wiring between different items of equipment? If the former then BS 7671 probably isn't the appropriate standard (black for both poles of power sounds like equipment wiring to me).

    If BS 7671 is appropriate then forget 4A4 - that's part of appendix 4 which is just "informative" so isn't part of the definition of the standard (normative). For compliance with standards 133.1 is probably a good start - i.e. comply with a BS or HD or failing that IEC or appropriate standard of another country (but see lots of discussions about the use of SY cable...).

       - Andy.

Children
  • in reply to AJJewsbury

    Hi Andy , thanks for the response.

    The spec is for the interconnecting cabling on a skid mounted vacuum pump system. Ive shared the table for guidance on typical cables I would typically expect to see.

    But yeah thanks , I'm gonna have to try more bluntly pointing at  133.1.

    Kind regards

    Chris 

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