Primarily would anyone know the diameter size of the dual sheathed EZ-Cable used beyond the customer service point?
Just to clarify, are you asking the diameter of the cable when deployed externally (i.e. with both sheaths in situ) or when deployed internally, with the black outer sheath stripped off?
. . . the external drop cable was also cable tied to my guttering drop pipe so I'd like to potentially clip that to the wall if there is a size suggestion.
If it is Dropwire 10B (CW1411), two pairs, or Dropwire 11 (CW1415), one pair, both have a nominal 5.3 mm diameter sheath. (Looking in two separate documents I see they both agree. Diameter: minimum 5.1 mm, target 5.3 mm, maximum 5.6 mm.)
Edited to add:
I can't put a paw on the exact figures for EZ-Bend cable but, for example, Dexgreen inside/outside (insideout) cable has an inner sheath diameter of 2.9 mm and an outer sheath diameter of 5.0 mm.