Repairing Nicked Extension Cords

[tonyfoale]

I use "flexible" heat shrink tube. A week or so back I nicked a cable down to the bare wire, it was in the centre of the cable. I cut through and made staggered joins in the two lines (a no earth tool) with the heat shrink on each, then a second layer over the area where the outer sheath was missing and then a final covering extending 12mm or so over the outer sheath. I have several such repairs and never had a problem.