The disclosure provides an insulator for an end of a cable, the insulator having a longitudinal body in which a central channel is provided, the insulator including a connector system arranged in the central channel, the system comprising a connection pin for receiving an end segment of the cable, the pin being shaped so as to present an inside surface that is serrated.

An assembly for use with an oil-filled cable termination includes a cable gland, a cable received in the cable gland, and a stress cone received around the cable and spaced apart from the cable gland. The cable includes a central conductor and a polymeric insulation layer surrounding the central conductor. A lug is spaced apart from the stress cone and includes a barrel portion with the central conductor of the cable received in the barrel portion. An oil barrier system including an oil barrier layer surrounds the polymeric insulation layer of the cable between the stress cone and the lug.

An assembly for use with an oil-filled cable termination includes a cable gland, a cable received in the cable gland, and a stress cone received around the cable and spaced apart from the cable gland. The cable includes a central conductor and a polymeric insulation layer surrounding the central conductor. A lug is spaced apart from the stress cone and includes a barrel portion with the central conductor of the cable received in the barrel portion. An oil barrier system including an oil barrier layer surrounds the polymeric insulation layer of the cable between the stress cone and the lug.

A sealing boot for protecting an electrical interconnection includes: a main body having a cavity configured to house an interconnection of two electrical connectors; and a neck merging with one end of the main body and having a cylindrical inner surface that defines a bore that is continuous with the cavity of the main body, the inner surface having an inner diameter that is less than an inner diameter of the cavity of the main body. The inner surface of the neck includes a helical projection comprising a main artery and two tributaries, the tributaries each intersecting a section of the main artery at one end and merging with an end of the main artery at an opposite end.

A conducting wire end portion joining method is a method for conductively joining together end portions of conducting wires each covered with an insulation coating. The conducting wire end portion joining method includes: adjoining end portions of two winding wires, and bringing the end portions of the conducting wires of the two winding wires into contact with a conductive coating material stored in an insulating cap having a property of shrinking when heated; and shrinking the insulating cap by heating to fix the shrunken insulating cap around the insulation coatings of the end portions of the two winding wires, and joining together the end portions of the two winding wires by conductively connecting the conducting wires of the two winding wires via the hardened conductive coating material.

A testing assisting device includes a first end of a cable, an insulation body including a channel centred around and stretching along a longitudinal axis through the insulation body and a channel closing element, the channel being accessible via a first opening in the insulation body, wherein the first cable end extends into the channel via the first opening and a first end of the channel closing element abuts a first end of a conductor of the first cable end at a mating location in the channel in order to form an interface between the first end of the channel closing element and the first end of the conductor of the first cable end at the mating location. There is also a method of forming the testing assisting device.

A terminal-equipped wire includes a wire with a core wire and an insulating coating with which the core wire is coated, and a terminal fitting that is attached to a leading end of the wire. The terminal fitting is electrically connected to the core wire in a core-wire crimp portion, and is fixed to the wire from an external side of the insulating coating in a coating crimp portion that is located rearward of the core-wire crimp portion in a longitudinal direction of the wire. The terminal-equipped wire also includes a resin-coated portion where a region containing the core-wire crimp portion and the coating crimp portion is coated with a resin. The resin-coated portion has a thin-walled portion with a reduced thickness, in a portion of the resin-coated portion that covers the insulating coating.

A cable gland and method for earthing, bonding, and electromagnetic capability with armored, metal-clad, and metallic-sheathed cable types. The cable gland includes compressible fingers with the ability to compress or expand about a cable inserted in and through the cable gland, and an adjustable earthing coil arranged internally inside a part of the cable gland that secures around a cable inserted in the cable gland. When fully coiled, the adjustable earthing coil is relaxed and as the adjustable earthing coil is expanded it generates a restoring force. An earthing strap attached to the adjustable earthing coil in the cable gland, provides grounding capabilities to the cable gland.

A sealing boot for protecting an electrical interconnection includes: a main body having a cavity configured to house an interconnection of two electrical connectors; and a neck merging with one end of the main body and having a cylindrical inner surface that defines a bore that is continuous with the cavity of the main body, the inner surface having an inner diameter that is less than an inner diameter of the cavity of the main body. The inner surface of the neck includes a helical projection comprising a main artery and two tributaries, the tributaries each intersecting a section of the main artery at one end and merging with an end of the main artery at an opposite end.

A heat-recoverable component includes a tube-shaped or cap-shaped base material layer having heat shrinkability, and an adhesive layer formed on an inner circumferential surface of the base material layer. The adhesive layer includes a low-viscosity adhesive portion and a high-viscosity adhesive portion disposed between the low-viscosity adhesive portion and an opening of the base material layer. The low-viscosity adhesive portion has a shear viscosity of 10 Pa.Math.s or less at a shear rate of 1 s.sup.1 at a heat shrinkage temperature of the base material layer. The high-viscosity adhesive portion has a shear viscosity of 100 Pa.Math.s or more at a shear rate of 1 s.sup.1 at the heat shrinkage temperature of the base material layer. At the heat shrinkage temperature, a ratio of the shear viscosity of the high-viscosity adhesive portion to the shear viscosity of the low-viscosity adhesive portion is 15,000 or less.