What is a Wire Harness? What is a cable assembly?

What is a Wire Harness?
A wire harness, often referred to as a cable harness or wiring assembly, is a systematic and integrated arrangement of cables within an insulated material. The purpose of the assembly is to transmit signal or electrical power. Cables are bound together with straps, cable ties, cable lacing, sleeves, electrical tape, conduit, or a combination thereof. The wire harness simplifies the connection to larger components by integrating the wiring into a single unit for “drop-in” installation.

What is a cable assembly?
Firstly, it’s important to clarify what a cable is in order to differentiate it from a wire. A cable is two or more conductors that are wrapped in a single jacket. “Most cables consist of a positive wire that carries the electrical current, a neutral wire that completes the electrical loop and a grounding wire,” says LeGere. A cable assembly is a group of wires or cables that are encased in a singular tube of material which is usually composed of rubber, vinyl or pressure extruded thermoplastics such as polyurethane. So, unlike a wire harness which exposes a number of individually separated wires, a cable assembly encases all wires within one cable.

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