A fire-resistive cable system comprises an electrical cable housed in a fiberglass-reinforced thermosetting resin conduit. The electrical cable comprises a conductor and has only one couple of mica tapes surrounding the conductor. The couple of mica tapes are formed of a first mica tape and a second mica tape wound around the first mica tape. The mica layer of the first mica tape faces and contacts the mica layer of the second mica tape. The fiberglass-reinforced thermosetting resin conduit is made of a material comprising fibers of a glass selected from E-glass and E-CR-glass, and a resin.

An electric submersible pumping system includes a motor, a pump driven by the motor, and a cable that provides electrical power to the motor. The cable includes a conductor and an insulator surrounding the conductor. The insulator includes a first layer surrounding the conductor and a second layer surrounding the first layer. The insulator may include an H.sub.2S scavenger and an H.sub.2S reactant in the first or second layers surrounding the conductor. The cable optionally includes a sub-insulator layer that includes a metal or nitride coating applied directly to the conductor.

A data cable includes a plurality of cores each having a conductor surrounded by core insulation, providing the cores with a plurality of prescribed telecommunications transmission parameters. The core insulation includes a plurality of flame-retardant layers having a mineral, electrically insulating and flame-resistant first material, for maintaining functional integrity in the event of fire.

A cable includes: a core wire including a pair of inner conductors arranged at intervals in a transverse direction and an inner insulating layer covering the pair of inner conductors; a shielding layer disposed outside the insulating layer; and an outer insulating layer covering the shielding layer; wherein a cross-sectional shape of the inner conductor is flat, and a cross-sectional shape of the inner insulating layer is semicircular at least on two sides in the transverse direction.

Disclosed is an armored cable assembly including a core having a notched assembly tape about a plurality of conductors. A metal sheath surrounds the core.

The present disclosure provides an insulated wire and a preparation method therefor, a winding wire, and an electrical device, relating to the technical field of electrochemical elements. The insulated wire includes a conductor and an intermediate layer and an insulating layer sequentially coated on the conductor; the insulating layer includes thermoplastic polyimide and polyetheretherketone; a mass percentage of the thermoplastic polyimide in the insulating layer ranges from 85% to 95%, and a mass percentage of the polyetheretherketone in the insulating layer ranges from 5% to 15%; the number of bubbles with a pore size of 30 m or more in the insulating layer is not more than 5 per 100 m.