Sergio,

As you are now thinking and wallywombat said, a shroud really is cosmetic. You will notice in my post the word "Competant" appearing all the time, so what the the designer specify? or did the installer do both design and installation? Either way they should be considering what benefits or indeed negatives fitting a shroud on SWA or braided cable would provide.

Indoors on a BW  gland without a doubt a chroud tidies things up so cosmetic. On a CW outdoor gland the gland is IP Rated to a level stamped on the gland, so the shroud again is cosmetic? but again what is the material of the gland, brass, etc etc? so does the shroud provide some cosmetic effect and less corrosion where wrong gland materials been used. Negatively shroud on a CW gland outdoors can fill up with water.

I have already stated why no shrouds typically in a Ex environment either in or outdoors.

lyledunn, also gave a great insite and like myself seen thousands of corroded glands, enclosures, glandplates and failure of enclosures on water treatment facilities, unfortunately a lot of it falls down to poor design and/or poor selection of equipment and materials outdoors, big enclosures and a lot of issues caused by condensation forming inside the enclosure, that then runs down and settles on bottom glandplate and can permiate thru into the gland thread at that point.

GTB  

Not SWA, but today I received an order of some 3 inch equal T steel. In fact 80 mm and 9 mm thick, so almost 1400 mm². At one point, 90% of the original structure had gone. The reason was that it was damp and exposed to oxygen. The bit below ground just had a bit of surface rust.

Think of rebar - that does not rust until the concrete cracks.

So it is all down to the atmosphere. I doubt that a shroud will make much difference.

The slip on rubber cone sort of shroud is largely like the trim on car wheels - not needed, but looks nice. There are many things that are a bit like that, but in anything but the most benign environment the gland type where there is a rubber crush ring that grips the outer jacket of the cable should be used - damp should certainly not be able to reach the galvanized armour wires, and in general I would never recommend the short gland design where the wires are exposed to view.  Even so Vaseline on mixed metal junctions and fully hot-melt glue lined heatshrink sleeves on anything that really does need some protection.

I do a lot of antenna stuff that tends to mix the elements with expensive cables and damp is very much the enemy - there is enough gap between the wire cores for water to happily wick along doing unseen damage if it gets in at all.

Mike