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The use of SY cable in Lift installations

David Alcock

Hi,

I've noticed recently that lift companies tend to use SY cable for the supply cable from the Mian isolator (provided by main MEP contractor  under BS7671) to the lift control panel main intake connection of the lift

I know Lifts are not covered by BS7671, but I'm aware that these cable types are designed for use in Control environments and are discouraged in BS7671 for power circuits/Fixed installations

when questioned lift companies just issue data sheets for the said cable, spouting VDE compliance, although they are not manufactured to any manufacturing standard, how do they certify the installation when every way you look points to them not to be used as power cables? even if in lift installations? 

:The cable manufacturers even state on their data sheet they are "control cables" with mech protection 

Regards

Parents

  • Since I can remember, SY cable installation has been included in the AM2, which is the national end point assessment for electricians seeking recognition in the UK. At some point, someone must have pointed out the difficulty with 7671 compliance and so now the departure section of the EIC that the candidate completes is already pre-filled to indicate the non-conformity.

    Because SY is used in the AM2, it is also used by colleges and training centres in preparing candidates for the assessment, so you really couldn’t blame operatives for using it without question.

    As AJ indicates, it is time it was sorted. 

Reply

  • Since I can remember, SY cable installation has been included in the AM2, which is the national end point assessment for electricians seeking recognition in the UK. At some point, someone must have pointed out the difficulty with 7671 compliance and so now the departure section of the EIC that the candidate completes is already pre-filled to indicate the non-conformity.

    Because SY is used in the AM2, it is also used by colleges and training centres in preparing candidates for the assessment, so you really couldn’t blame operatives for using it without question.

    As AJ indicates, it is time it was sorted. 

Children
  • in reply to lyledunn

    Lyledunn

    I cant remember back in 1987 when i took my AM2, but back in them days SY was made in the UK to  UK standards with better insulation etc, its not now or made to any worldwide standards and has inferior insulation, no UV protection etc, also how do you size the cable as there are no cable factors you can use! I'm guessing most people just use the BS7671 tables, but they are for different cables made to a standard

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