So it seems after all the debate typically 2IΔn is a Corrigendum.
So now I need to change all those bits that were got wrong. I see the Radial diagram also changed well spotted think it was Sparx?
Well with a bit of luck we can get a link to http://www.theiet.org/publishing/wiring ... m?type=pdf in the projects section as very good to show what is allowed on rings and radials.
In all I don't think it changes much I had hoped that SELV cables buried in a wall would be clarified.
All best Eric