A wire harness including an electric wire that has a core wire and a coating that coats the core wire, a connector that is attached to an end of the electric wire, and a seal that is interposed between the coating of the electric wire and the connector, wherein a tube with a modulus of elasticity higher than that of the coating is provided between the coating and the seal.

A holder configured to be fitted to a tube that is made of metal and through which a wire is to be inserted, the holder including: a tubular main body that includes a first end and a second end opposite to the first end, and is configured to be inserted into the tube; and a cover formed protruding radially outward from an outer circumferential surface of the main body at the first end, wherein: the cover is formed only in a portion of the main body in a circumferential direction, and the cover includes a wall that protrudes radially outward from the outer circumferential surface of the main body, and a guard that extends from a radially outward end of the wall toward the second end of the main body.

A holder configured to be fitted to a tube that is made of metal and through which a wire is to be inserted, the holder including: a tubular main body that includes a first end and a second end opposite to the first end, and is configured to be inserted into the tube; and a cover formed protruding radially outward from an outer circumferential surface of the main body at the first end, wherein: the cover is formed only in a portion of the main body in a circumferential direction, and the cover includes a wall that protrudes radially outward from the outer circumferential surface of the main body, and a guard that extends from a radially outward end of the wall toward the second end of the main body.

A covered electrical wire comprising a conductor and an insulating covering layer provided outside the conductor, the conductor being a stranded wire composed of a strand of a plurality of copper alloy wires: composed of a copper alloy containing Fe in an amount of 0.1% by mass or more and 1.6% by mass or less, P in an amount of 0.05% by mass or more and 0.7% by mass or less, and Sn in an amount of 0.05% by mass or more and 0.7% by mass or less, with the balance being Cu and impurities; and having a wire diameter of 0.5 mm or less, the copper alloy wire having a tensile strength of 385 MPa or more and a work-hardening exponent of 0.1 or more.

A power and data connectivity micro grid for Information and Communication Technologies (ICT) infrastructure includes power sourcing equipment device configured to deliver a first direct current (DC) power signal to a power port of the power sourcing equipment device, a power boost module having a power input port and a power output port, where the power boost module is configured to add a DC boost power signal to a second DC power signal received at the power boost module, a first splice enclosure, a second splice enclosure, and first, second and third composite power-data cables configured to transmit first, second, and third DC power signals. The third DC power signal from the power output port of the power boost module includes the DC boost power signal added to the second DC power signal that was received at the power input port of the power boost module.

A method for manufacturing a wiring system includes providing an electric cable having an electric conductor and a contact element with a termination portion, and removing a cable insulation in a first sub-portion of the electric cable. The cable insulation remains on the electric conductor in a second sub-portion of the electric cable offset from the first sub-portion. The electric conductor is welded at the first sub-portion to a termination surface of the termination portion. The first sub-portion is pressed against the termination portion and compressed during welding. A holding device encompasses the second sub-portion at least partially. The holding device supports the second sub-portion at least during the welding and compressing of the first sub-portion and maintains a position of the second sub-portion.

A method for manufacturing a wiring system includes providing an electric cable having an electric conductor and a contact element with a termination portion, and removing a cable insulation in a first sub-portion of the electric cable. The cable insulation remains on the electric conductor in a second sub-portion of the electric cable offset from the first sub-portion. The electric conductor is welded at the first sub-portion to a termination surface of the termination portion. The first sub-portion is pressed against the termination portion and compressed during welding. A holding device encompasses the second sub-portion at least partially. The holding device supports the second sub-portion at least during the welding and compressing of the first sub-portion and maintains a position of the second sub-portion.

The present invention relates to the technical field of underwater communications, and discloses a bridging transmission device for underwater wireless signals, which includes a coaxial cable and two conversion assemblies. The coaxial cable can transmit the weak electric signal. The transmission device transmits and converts wireless signals by means of signal bridging between two or among more independent intelligent terminal devices, converts the electromagnetic wave signal and the weak electric signal to each other through two groups of conversion antennas, and transmits the weak electric signal under water through the coaxial cable, so the purpose of the remote transmission of underwater wireless signals can be achieved. The conversion assembly has no need to be wired to the intelligent terminal device through an interface, so the waterproof performance is good, and the universality is high.

An electrical conductor assembly includes a line section having a plurality of conductor wires formed of a first electrically conductive material, a contact section in which the conductor wires are compacted to form a contact unit, and a layer formed of a second electrically conductive material. The layer is disposed on a contact surface of the contact unit.

An electrical conductor assembly includes a line section having a plurality of conductor wires formed of a first electrically conductive material, a contact section in which the conductor wires are compacted to form a contact unit, and a layer formed of a second electrically conductive material. The layer is disposed on a contact surface of the contact unit.