I should make clear that although the regulations say a ring circuit conductors must have a minimum CCC of 20A, it does also state that the minimum size shall be 2.5mm² (except MICC) for some reason.
I was just attempting to assure Tactical that it is electrically safe - although it does not appear to be a ring in this case anyway.
I think that might only be part of the picture, even when of the PVC oversheathed type, or exposed to touch (so therefore 70C limiting temp) 2L1.5 is rated to 23A, its 28A if its bare and clipped to non combustable material out of touch where it can run at 105C
Something in the back of my mind says theres something about the grade of copper, the cores of MICC clearly look/feel different from those in T&E, less bright, and harder and I think I remember being told that one was hard drawn copper while the other was soft annealed copper and I know its got something to do with the crystaline structure of the material but thats as about as far as I can remember
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