NYM cable?

[knxhome]

Is it OK to install NYM cables for domestic use?

DALI (Digital Addressable Lighting Interface) installations are usually wired with 5 core cables.
Usually 5 core NYM cables are used, e.g. see p11 of
http://www.osram.co.uk/_global/pdf/Professional/ECG_&_LMS/LMS/Instructions/zpe-2542228-000-02.pdf

A voltimum entry from 2007 finds NYM installations acceptable, at least in principle.
Subcategory - 1. MV & LV Cables & Accessories - Voltimum UK - Electrical Installation Products and Contracting

Is this view still acceptable today?

Thanks

 

[Deleted member 26818]

Why would it not be OK for domestic, if it's OK for commercial/industrial?
BS7671 applies in all cases.

 

[sansanich]

NYM cable- some expensive for domestic, i think

 

[knxhome]

NYM cable- some expensive for domestic, i think

What would be your suggestion for 5x1.5mm2, or 5x2.5mm2.

 

[Andyfm]

Would 5 core flex be cheaper?

 

[knxhome]

Would 5 core flex be cheaper?

NYM 1.5mm2 or 2.5mm2 have single stranded conductors.

Are you suggesting to use a flex (-F or BS6500) e.g H05VV -F cable, for connection to a CU, or as permanent installation cable?
I thought such use is a no-no.

 

[Andyfm]

I read somewhere that as long as its installed as per regs you can use it the same as normal pvc, taking into consideration heat resistance etc and protecting where necessary against damage

 

[knxhome]

I read somewhere that as long as its installed as per regs you can use it the same as normal pvc, taking into consideration heat resistance etc and protecting where necessary against damage

I am more worried about the connections in the CU, and junctions elsewhere, with -F cables either not permitted, and/or less reliable, as long as no special measures are taken.