Were it on the top surface of the enclosure, the slot would have to either be very narrow or filled with something in order to satisfy the IP requirements.
Kind Regards, John
POTW - pointless trunking
- Thread starter ban-all-sheds
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Kind Regards, John
Has he got an organ in his workshop, or a workbench, test equipment and small component storage in his living room?
Should get Photonicinduction to run some tests - I bet he could get the CU to glow red hot.
Anyway...
At the end he says "of course it doesn't comply with BS 7671". Anyone know which reg(s) relate to it?
521.5.2 has a bit about electromagnetic effects
That seems pretty absolute - no wriggle room along the lines of 'measures to be taken to avoid..' etc
Aluminium CUs?
Aluminium CUs?
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I agree, it's a reasonably neat way of supporting the cables across the horizontal run. But as others have already said, it could have been done better.
The slot would typically only be the width of the thickness of a hacksaw blade - so fairly narrow.
Fairly narrow, yes, but I suspect pretty close to the 1mm limit for the top of an enclosure.
Kind Regards, John
John may I ask, i often read about this IP rating for the top, where does this rule come from, does it also apply to things like sarel boxes etc with electrical stuff in, have just got back from a job where the panels full of water due to a 25mm hole in the top for about 5 data cables
416.2.2 - which appears to apply to the "horizontal top surface" of any "barrier or enclosure".
I'm not sure if this means that one can escape from that requirement by installing an enclosure just a few degrees off "horizontal"!
Kind Regards, John
Think (if you can ) HMS Sheffield
As I presume you are implying, aluminium is not "non-combustible" (although perhaps more relevant, it's got a fairly low melting point) - but, of course, nor is steel.
Kind Regards, John
Is that right? Lateral thinking required.
Is that right? Lateral thinking required.
What are you going on about? What sort of lateral thinking did you have in mind?
How wide a slot does your hacksaw blade usually cut?
Don't forget that you're the one who seemed to think that a slot (of any width) would not "achieve" anything.
Kind Regards, John
Think, if you can, that domestic CUs are unlikely to be attacked by, and are not required to withstand attacks from, anti-ship missiles.
You really are not very good at this, are you.
IHNI what he is implying. If he is not a troll then he has some of the most severe thinking difficulties I have ever encountered.
My point was that aluminium is not ferromagnetic.
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