Earthing of DC supplied LED aluminium profile

[recre8]

I'm planning on adding some recessed LED lighting into my outdoor walls and was wondering what SANS says about DC lighting and earthing? Given that these profiles are "metallic parts" and accessible, the SANS document sounds like it has to be earthed despite being supplied by 12VDC? Not an easy task considering the profile doesn't have any practical means of attaching an earth wire? Would it be an instant CoC fail if these were not earthed?

[Isetech]

I'm planning on adding some recessed LED lighting into my outdoor walls and was wondering what SANS says about DC lighting and earthing? Given that these profiles are "metallic parts" and accessible, the SANS document sounds like it has to be earthed despite being supplied by 12VDC? Not an easy task considering the profile doesn't have any practical means of attaching an earth wire? Would it be an instant CoC fail if these were not earthed?

[ATTACH=CONFIG]8636[/ATTACH]

I would use safety transformers to save the headache.

[Derlyn]

2 questions I would ask.

In it's entire length, is there anywhere where it is within arm's length of another structure that is bonded to earth ?

And

Where is the DC power supply situated ?

[recre8]

2 questions I would ask.

In it's entire length, is there anywhere where it is within arm's length of another structure that is bonded to earth ?

And

Where is the DC power supply situated ?

Sure.
1. It will be embedded into a masonry wall. Not sure if the wall itself would be considered electrically earthed. But otherwise no, this will be on a boundary wall of a complex with no pipes, brickforce (block wall) or any other metallic parts close by.

2. The DC transformer (24VDC switch mode PSU/LED Driver) will be about 5m away close to an existing outdoor lighting point (above sliding door - height of point is about 2.3m)

Out of interest, what is the general rule regarding DC-supplied lighting fixtures in SANS 10142? I can't seem to find relevant section other than the section about pool lighting.