end of the splice the convolutions will then separate singly by withdrawing the coil from the splice one helical convolution at a time the splice is allowed to radially shrink onto a connection or terminal from one end to the other manual pulling of the removal strip provides fully adequate force to unwind and remove the core leaving the splice tightly affixed to the cable the core may be made from a variety of materials e g polyvinyl chloride polyethylene terephthalate cellulose acetate butyrate and the like the material need merely be a material which is sufficiently rigid to support the splice and allow manual removal of the entire core while being flexible enough to permit the required unwinding splices of the invention have a long lifetime e g at least about 20 years long term reliability is a combination of the article design and the long term stability of these materials the geometry of the cable enables effective stress control with low danger of breakdowns and thermal runaway it is critical to maintain an integral interface between the cable insulation and splice insulation the splice covers of the invention have the ability to be stored at 200 250 expansion and then perform at 20 expansion for many years because heating of the splice is not required for installation the connection can be operated immediately thereafter the electric properties will be met in the normally prevailing temperatures ranges of about 20 u00b0 c to about 130 u00b0 c without.