I've just come across a 50-ish-year old ring circuit where one cable at the CU is the usual 7/0.029" red/unsheathed/black Imperial T&E cable, but the other cable is red/transparent/blue, all three conductors (apparently) 7/0.029". I've never seen this cable type before - is anyone familiar with it, and if so, what's its story?
The insulation floats and is more rigid than I'd expect for PVC. The transparent insulation shows no hint of white pigmentation. The R & B aren't faded in any way. I did think that maybe it was for 2-way switched lighting (without an earth), but it's a 2.9mm power cable.
The insulation floats and is more rigid than I'd expect for PVC. The transparent insulation shows no hint of white pigmentation. The R & B aren't faded in any way. I did think that maybe it was for 2-way switched lighting (without an earth), but it's a 2.9mm power cable.
