Commonly used raw materials and basic knowledge of wiring harness

A common harness raw materials and basic knowledge of home appliance harnesses automotive harness raw materials including wire harnesses of the main materials and auxiliary materials, the main materials include wire terminals. Sheath. Fuse, auxiliary materials, rubber parts. Moisture-proof plug. PVC pipe. Corrugated pipe. Industrial plastic cloth. Fuse sheet. Solenoid valve. Ties. Latch. Bracket. Diode etc.

Second, wire basics 1. vehicle wire harness in the common wire specifications are standard cross-section 0.5mm2.0.75mm.2.0mm2.2.5mm2.4.0mm2.6.0mm2 and other wires (Japanese cars common standard cross-section of 0.5mm.20.85mm.21.25mm.22.0mm.22.5mm.24.0mm.26. mm, etc.), they all have allowable load current values as wires for different power electrical devices. Taking the whole car wiring harness as an example, 0.5mm22 gauge wire is suitable for instrument lamps. Display light. Door lamps. Dome light, etc.; 0.75mm22 specification wire for license plate light. Front and rear lights. Brake lights, etc. 0mm2 size wire for directional lights. Fog lamps, etc.; 1.5mm22 specification wire for headlights. Horn, etc. Main power wires, such as generator armature wire. Hitch wire (i.e. ground wire), etc.5mm2~4mm2 wire. For general vehicles, it is important to look at the load current, such as the battery's hitch wire . Positive power line application of special automotive wire, wire diameter is larger, more than 10 square millimeters, this power line application of special automotive wire, wire diameter is larger, more than 10 square millimeters "Jumbo" wire is generally not braided into the main power harness.2. Composition of the automotive low-voltage wires; core wire (soft metal stranded wire): the conductor. Core wire with copper... Aluminum core wire insulation ¨ bar code marking, etc., does not have the effect of connecting the circuits, so that the flow of current, the composition of automotive low-voltage wires have the function of transmitting electrical signals; insulation. To avoid short circuits (avoiding contact with other circuits), the core wire is wrapped in plastic, etc. for protection (insulation); Barcode marking. Barcode marking to indicate the characteristics of the wire (wire type) model number, etc.). 3. "Kind of wire" "wire diameter" "wire color" is the basic difference between the wire; "Kind of wire" is usually based on the difference between the insulation skin to distinguish; "wire diameter" it is based on the size of the conductor (core) to distinguish; "wire color" is the color of the wire skin.

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