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Introduction to Electronic Wire Harness
Publish Time:
2025-04-21 14:23
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Wiring harness 1. Definition and composition of wiring harnesses The components of a common wiring harness are: wires, terminals, and plastic parts. In our electronics industry, it means "electronic wiring harness." It generally refers to a low-voltage electronic wire assembly. It bridges the communication between two or more isolated and non-communicating electronic circuits, allowing current to flow and realizing various functions of electronic components. It is an indispensable component in various electrical and electronic equipment.
Complex wiring harnesses also include: tape, cable ties, sleeves, sheaths, labels, etc.
2. Appliance wiring harnesses are the main network of the circuit; without appliance wiring harnesses, there would be no appliance circuits. Currently, whether it is high-end luxury appliances or economical ordinary appliances, the wiring harness forming methods are basically the same, all composed of wires, connectors, and wrapping tape. Appliance wires, also known as low-voltage wires, are different from ordinary household wires. Ordinary household wires are single-core copper wires with a certain hardness. Appliance wires are multi-core soft copper wires. Some soft wires are as thin as hair, with several or dozens of soft copper wires wrapped in a plastic insulating tube (polyvinyl chloride), making them soft and not easily broken. The commonly used specifications of wires in appliance wiring harnesses include nominal cross-sectional areas of 0.5, 0.75, 1.0, 1.5, 2.0, 2.5, 4.0, and 6.0 square millimeters. Each has an allowable load current value, and different specifications of wires are used for electrical equipment with different power ratings.
Simply put, single-core and multi-core are actually the difference between single-strand and multi-strand. The core wires of multi-core soft wires are thinner than single-core hard wires. Current has a skin effect, and under the condition of equal cross-sectional area with single-strand wires, the current carrying capacity is relatively larger, and the heat generation is definitely greater than that of single-strand wires. Multi-strand wires are softer and easier to operate, while single-core wires are harder and not easy to operate. Single-core hard wires, after removing the insulation, are a solid copper wire, and the cross-sectional area is generally 1.5mm2, 2.5mm2, and 4mm2. Regarding the material, why copper is used instead of aluminum: high internal resistance, high power consumption, small carrying capacity, poor tensile strength, easy oxidation, and short service life.
Therefore, electrical appliances use multi-core wires, just like the cooling fan wiring harness here uses multi-core wires, and the power cord of household televisions also uses multi-core wires.
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Harness 1. Definition and Composition of Harnesses The components of an ordinary harness are: wires, terminals, and plastic parts. In our electronics industry, it means "electronic harness." Generally refers to low-voltage electronic wire assemblies. It bridges the communication between two or more isolated and non-communicating electronic circuits, allowing current to flow and realizing various functions of electronic components. It is an indispensable component in various electrical and electronic equipment.
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