Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.

A process for manufacturing finished wire and cable having reduced coefficient of friction and pulling force during installation, includes providing a payoff reel containing at least one internal conductor wire; supplying the at least one internal conductor wire from the reel to at least one extruder; providing the least one extruder, wherein the at least one extruder applies an insulating material and a polymerized jacket composition over the at least one internal conductor wire, wherein the polymerized jacket composition comprises a predetermined amount by weight of nylon; and at least 3% by weight of a silica providing a cooling device for lowering the temperature of the extruded insulating material and the polymerized jacket composition and cooling the insulating material and the polymerized jacket composition in the cooling device; and, reeling onto a storage reel the finished, cooled, wire and cable for storage and distribution.

Submersible transducer includes a transducer housing configured to be submerged within an aqueous liquid and a pressure sensor operable to obtain data for determining a pressure of the aqueous liquid. The pressure sensor may be disposed within the transducer housing. The submersible transducer also includes a submersible cable having an electrical conductor and a venting tube operably coupled to the pressure sensor. The pressure sensor uses an atmospheric pressure of an external environment that is detected through the venting tube to determine the pressure of the aqueous liquid. The submersible cable also includes a cable jacket and an inner layer that is surrounded by the cable jacket. The inner layer surrounds the electrical conductor and the venting tube. The inner layer includes a non-hygroscopic polymer that is more resistant to absorbing the aqueous liquid than the cable jacket.

The invention relates to reinforced electric wires, particularly reinforced electric wires as used in holiday lighting such as Christmas light strings. In some embodiments, the reinforced electric wire has a conductor, a reinforcing string or one or more reinforcing threads, and an insulator jacket. In some embodiments, the conductor has a single conductor strand. In some embodiments, the conductor has a plurality of conductor strands. In some embodiments, the wire has an insulator jacket having a plurality of channels therein, where a conductor is passed through the center channel, and reinforcing threads are passed through the other channels.

A conductor arrangement for an electrical energy or data transmission connection includes at least one conductor portion comprising a flexible internal conductor and a thermoplastic hard plastic sheath surrounding the flexible internal conductor. The thermoplastic hard plastic sheath is transformable into a formable state when heated to a threshold temperature defined at a specific softening point, and the thermoplastic hard plastic sheath hardens into a formed state when cooled.

An aluminum electrical wire includes a conductor including aluminum-based core wires, and an insulating resin covering covering the conductor and having a thickness deviation of not less than 70%. The aluminum-based core wires contain 99 mass % of aluminum, and the conductor is constructed by concentrically twisting 19 or 37 of the aluminum-based core wires at the same pitch in a non-compressed state such that the aluminum electrical wire has a current capacity that is substantially the same as a current capacity of a copper electrical wire having a diameter that is substantially the same as a diameter of the aluminum electrical wire.

A method that has a step (a) of melt-kneading 0.003 to 0.3 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a resin containing a halogen-containing resin, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; a heat-resistant crosslinked resin formed body obtained by the method, a silane master batch, a mixture and a formed body thereof, and a heat-resistant product.

The present invention relates to an energy cable comprising a cable core comprising an electric conductor and a crosslinked electrically insulating layer, wherein the cable core further comprises a microporous material having a bimodal pore volume distribution with a first peak of the distribution having a maximum at a pore diameter value within the range 5.5-6.5 and a second peak of the distribution having a maximum at a pore diameter value within the range 7.5-8.5 , the maximum values of the first and the second peak corresponding to an incremental pore volume of at least 410.sup.3 cm.sup.3/g. The present invention also relates to a method for extracting methane crosslinking by-products from a crosslinked electrically insulating layer of an energy cable.

A cable includes a plurality of electric wires, which are laid helically around a center of the cable and along a central axis of the cable, and a sheath provided to cover respective peripheries of the plurality of electric wires together. The sheath includes an inner layer sheath made of a urethane resin, and an outer layer sheath provided around an outer periphery of the inner layer sheath to protect the inner layer sheath. The cable may further include a core member at its center. The sheath may be composed of a single layer instead of plural layers.

The present invention concerns an electric cable (10; 20) comprising: an electric conductor (11, 21) surrounded with an electrically insulating layer (12, 22) made from a first polymer composition comprising: (a) polyvinyl chloride as a first polymer matrix, (b) an amount up to 45 phr of a plasticizing system consisting of a phthalate plasticizer and a second plasticizer selected from: dialkyl-adipate, dialkyl-sebacate or dialkyl-azelate, wherein the alkyl group contains from 4 to 10 carbon atoms; the first polymer composition having a limiting oxygen index (LOI) up to 30%; andan outer sheath (13, 24), surrounding the insulating layer (12, 22), made from a second polymer composition comprising: (i) a halogen-free second polymer matrix; and (ii) a halogen-free inorganic flame-retardant filler in amount suitable to impart flame retardant properties to the outer sheath (13, 24). The cable of the present invention exhibits flame retardancy, low smoke and cold resistance properties and is particularly suitable for low voltage power transmission or for telecommunications.