I'm after putting up some lights in my steel fabricated garage, the frame work is press w-section beams in about 1mm steel and im wondering what the best way of securing the lights and cabling. For the lights themselves I can use self tapping screws into the frame as used to secure the cladding but that appears a little over kill for the cable, and although some rubber sleeved p-clip's or similar but I would also prefer to secure it on the topside so its better protected. I wondered if there are some knock-on type clips that would do the job, ive seen them for use on 5/6mm i-beams, but obviously they wont grip down 1mm thick material. Ideally im sure it would all be in conduit but I would rather avoid that if I can.
Clipping cables to thin metal beams?
- Thread starter dhutch
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Something like this ??
http://www.cablinginstall.com/articles/2012/10/magnet-cable-clip.html
No idea how expensive they are.
M
mrnigelhudson
Just just google selfadhesive electrical clips
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I just used some girder clips with bolts that will clamp on any thickness, have a look at britclips
I find it hard to believe that they would necessarily be stable in the long-term until attached to perfectly horizontal surfaces - with any other orientation, I would envisage the possibility of gradually 'sliding down' as a result of gravity and the weight of the cables.
Kind Regards, John
Opinions on: MET bonding of this metal framed garage please.
Is it penetrating the ground and if so can it introduce a potential different to the garage's earthing system ?
As always, that will depend upon the impedance of the path from the structural metal to earth (I would personally say, under very wet, as well as dry, conditions).
Kind Regards, John
That's ok until they become unstuck !
FWIW, my experience is that, provided one first gets the surface very clean for them to stick to, once they're stuck they are a pain to get off - even after a long time in less-than-ideal conditions!
Kind Regards, John
If it penetrates the ground and provides a reliably-low-enough impedance path to ground, I guess it could theoretically be used as the garage's earthing system, which would avoid any need for bonding!
Kind Regards, John
So is this compliant with 411.3.1.2?
Sure, IMO. 411.3.1.2 requires bonding of extraneous-conductive-parts, and then lists examples of things which may be extraneous-c-ps. If something is not an extraneous-c-p, per definition in Part 2 (and per ricicle's thinking), then there is no requirement to bond it, even if it's one of the things in that list.
You presumably are not, for example, suggesting that all central heating systems need main bonding (because they appear in that list in 411.3.1.2), given that (at least in domestic situations) it would be extremely rare for them to be extraneous-c-ps?
Kind Regards, John
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