UPDATE
For anyone who might be interested in this thread in the future, I'll document my 'As Built' progress. I've finished most of the structural and plumbing stuff now so am installing the electrics.
I gave up all thoughts of dedicated dado power strip, and went with a run of 50 x 100 Salamandre galvanised trunking (From CEF, £7/m).
This meant cutting the lid manually, but avoids the multiple lid joints in the commercial systems. Inserting MK panel mounting plates, in what I think is the wrong place, ie behind the panel (lid), works well and will allow completely flush installation of accessories.
Also for wiring you would be looking at stuff in metal trunking ... or far simpler to handle using Flexishield cable ...
Thanks for the tip. I hadn't used Flexishield before and it's brilliant stuff. As is the recommended RS 262-0151 circular cable stripper. It makes T&E feel a bit Neanderthal
It sits nicely in the trunking, and stays where you put it.
As I can't use compartmented trunking as it would foul the accessories, I'm sleeving the ELV stuff: alarm, dc power supply, data, etc with braid, then tying it off at the top of the trunking. As this in non-standard, I'm not entirely sure if this satisfies current separation requirements but can't see why it's not OK electrically.
The picture below shows one dc power point, none of which will be close to any mains accessory.
The yellow socket is one of what will be multiple points at which to plug in (resistored) ESD wrist bands, or to ground items of portable lab apparatus.
To be continued
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Three types of Hazardous Areas are recognised as follows:
...
• Explosives Hazardous Areas – An area in which explosives material/substances of Explosives Ordnance are exposed to the atmosphere such that they require special precautions for the construction and use of equipment in order to prevent ignition of an explosives material/substance.
sound suspiciously like the material your working with... These rules don’t just apply to the Oil & Gas and offshore industries mate.
I researched these regs, of which I knew nothing, in detail.
As I suspected it's all about explosive atmospheres - eg gas/air, solvent vapours, flammable dusts - not Class 1 explosive materials sitting on a bench.
The statement '... An area in which explosives [sic] material/substances of Explosives Ordnance are exposed to the atmosphere' does not mean the general atmosphere of the Earth, it means any explosive atmosphere to which the ATEX regs apply.
But it's unclear why anyone would want or need to break open items of explosive ordnance while surrounded by an explosive atmosphere. It would be an extraordinarily reckless thing to do