This is about the thickest I can fit in a ParaMax sleeve. Bigger than that and I use PET mesh sleeves instead. This cable is used to power a 35mm film camera (ARRICAM LT) on a Steadicam with 24v.
Nice stuff. I sometimes make very high voltage cables (silicone jacket is 5x the actual wire diameter). I'll try your technique next time, though I already know getting the sleeve sliding on silicone is gonna suck. Maybe some soapy water... Hmm.