Dear All,
    What BS EN standard should be used for manufacturing the Sigle core LSZH Cables(CU/LSZH) BS EN 50525-3-31 (or)                                       BS EN 50525-3-41.

50525-3-41 is H07Z-K single core ( CU class 5/XL-HFFR ) Cross-linked insulation 90 degree

50525-3-31 is H07Z1-K single core ( CU class 5/HFFR ) not cross-linked insulation 70 degree

Hi,
I think you will get accurate answer from a cable manufacturing company. They will help you in a good way. How much I know Peter's Technology is one of the best cable manufacturer. I think you have contact them once for your querry.