apologies if this was a genuine post, but if you look at the OP, is does look like a typical spam post.
Ill echo the other thoughts, being totally enclosed, is it a cap, or is it a conduit (with the relevent issues that brings)
Plasterers are brought into it, as its a widespread belief that you need to use capping to stop plasterers cutting the cable with their trowels, in fact any competant plasterer values their tools, and is capable of plastering a wall with out cutting cables.
Infact a couple of plasterers I know would prefer NO capping, apparently the capping can flex and make it a bit harder to plaster, they prefer clipped cables, or oval conduit (thicker and doesnt flex as plastering)
Id also take the speed of installation with a pinch of salt, thats a lovely light block wall that hes installing on, ok, this may also be the case for your developments, however in the real world, many interior walls are brick, and are hard enough to get masonry clips into, never mind nails long enough to hold that length of capping into.