CCA Cable: Understanding Their Work in Electrical Field

The selection of materials is paramount, profoundly impacting the cable’s performance, durability, and range of application. Within the vast array of materials present in the market, Copper Clad Aluminum (CCA) wire emerges as a prominent and frequently debated choice. Our exploration will focus on defining CCA cable and examining its myriad applications, setting the stage for a thorough comparison with traditional pure copper wire. This discourse will also include a detailed exposition of methodologies essential for the precise identification of CCA cables. Further, our analysis will broaden to evaluate the practicality of integrating CCA cables in the automotive industry, a sector where the imperatives of reliability and efficiency cannot be overstated. This in-depth discussion aims to provide a comprehensive understanding of CCA cables’ role and potential in contemporary cable manufacturing.

What is CCA wire?

CCA wire meaning Copper Clad Aluminum wire, is a dual-metal electrical conductor composed of aluminum core surrounded by a copper shell. CCA wire aims to harness the benefits of both materials: aluminum is lighter and cheaper, forming the wire’s main body, and the external copper layer is highly conductive and resistant to corrosion, ensuring efficient transmission of electrical signals.

Developed in the 1960s, CCA electrical wire is a cost-effective alternative to solid copper wire that can effectively transmit electrical signals while maintaining a lower cost and weight than copper wire. Many people wonder, “Is CCA cable good?” Although CCA is not as good as pure copper, CCA cable can still be a favorable choice depending on the specific application and requirements. Below, let’s check out cca cable’s suitable applications.

cca cable

What is CCA Wire Good For?

CCA cable is primarily used in electrical and electronic applications where a balance between conductivity and cost is a key consideration. Here are some common uses of CCA wire:

  • Low voltage applications:: CCA wire is suitable for low-voltage consumer electronics that have minimal power requirements, such as in telephone wires, due to its cost-effectiveness and lightweight properties.
  • High-Frequency Coaxial Applications: CCA is more commonly used in high-frequency coaxial applications as the center conductor of coaxial cables. The skin effect, where alternating current (AC) tends to flow near the surface of the conductor, allows the good conductivity of the copper cladding to be utilized at higher frequencies.
  • Non-Critical Audio Applications: In some non-critical audio setups or consumer-grade audio equipment, CCA may be used for speaker wires where absolute fidelity is not the primary concern.
  • Short Distances: CCA can be used for relatively short cable runs where conductivity is sufficient.
  • Alarm and Security Systems: In alarm systems that do not require high conductivity, CCA wire can be used for connecting sensors and detectors to the main control panel.

In short, for uses with lower power transmission needs, shorter wire runs, minimal bending, and non-critical signal quality, the cost-effectiveness of Copper-Clad Aluminum wire can render it an advantageous choice. Nevertheless, CCA wire is generally not advisable in safety-critical high-power circuits, long-distance runs, coiling applications, or high-speed data transmission (explained below). And CCA cable fire rating can vary based on the composition of the cable’s insulation and jacketing materials, may include classifications like CM, CMR, CMP, or others. Now, let’s move on to another type of wire.


What is OFC Wire?

OFC wire meaning Oxygen free copper wire, a highly refined copper wire known for its excellent electrical conductivity, superior thermal conductivity, and high corrosion resistance. OFC copper wire is purified through an electrolytic refining process that virtually removes all oxygen and other impurities, yielding a purity of 99.99%. Oxygen free copper wire is often used in high-quality audio and video systems, precision instruments, and wherever minimal signal distortion and maximum conductivity are required.

CCA cable vs pure copper wire

CCA vs. OFC Wire.

The main difference between cca cable and ofc cable is the material they are made of, which determines many of their characteristics:

  1. Material composition:

While CCA cables consist of a thin layer of copper plated on an aluminum conductor, OFC consists entirely of oxygen-free copper, and no other metals are used.

  1. Conductivity:

CCA wire carries around 68% of the current that the same volume of OFC wire can carry, which means that for the same current application, a larger gauge of CCA wire may be needed compared to OFC electrical wire.

  1. Weight:

OFC is heavier than cca wire because copper is denser than aluminum.

  1. Durability and flexibility:

Aluminum is less ductile than copper, making cca cable less durable and more likely to break under mechanical stress. OFC cable, on the other hand, is more durable, more flexible, and better able to withstand bending and mounting stresses

  1. Corrosion resistance:

The aluminum core in copper-clad aluminum wire tends to oxidize when exposed, potentially leading to increased resistance and even failure over time. In contrast, oxygen-free copper wire is pure and resistant to oxidation and corrosion, ensuring reliability throughout its service life.

  1. Cost:

Pure copper is naturally more expensive than CCA due to the raw materials price and production process – CCA cables can be more than half the price of a copper cable.

In summary, while copper-clad aluminum cables are generally considered inferior to pure copper cables, the choice of CCA or OFC wire depends on the specific application. In applications where signal integrity and power handling are critical, OFC cables are generally preferred. However, for applications where these factors are less critical and the cost is a major consideration, the copper-clad aluminum wire may be a more suitable option.

copper vs aluminum wire
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Moreover, While CCA network cables, including CCA LAN cables and CCA Cat5 or Cat6 cables, are available on the market, we typically advise against their use in critical network infrastructure. The increased resistance of CCA ethernet cables, when compared to their pure copper counterparts, predisposes them to signal loss and a decline in network performance—challenges that intensify over extended distances. Furthermore, in applications requiring Power over Ethernet (PoE), CCA cable Poe is not just a matter of compromised efficiency; it also escalates into potential safety hazards. Below are some tips for recognizing CCA cable vs copper.

How to Identify CCA Cable?

Identifying a Copper Clad Aluminum (CCA) cable is a critical task in the cable industry, as the physical and electrical properties of CCA differ significantly from those of solid copper cables. Here are detailed methods to accurately identify CCA cables:

  1. Visual Inspection: Begin with a visual examination of the cable. CCA cables typically reveal a silver-colored aluminum core at the cut ends, contrasting with the reddish hue of pure copper. The copper cladding is usually thin, so the aluminum core becomes apparent upon close inspection.
  2. Weight Comparison: CCA cables are notably lighter than their pure copper counterparts. This is because aluminum, which forms the core of the CCA cable, has a significantly lower density compared to copper. Handling and comparing the weight of suspected CCA cables against known copper cables can provide a clear indication of their composition.
  3. Magnetic Test: Copper is non-magnetic, while aluminum is weakly magnetic. Using a magnet can be a quick test; if there is no magnetic attraction, it supports the cable being either CCA or pure copper. However, this test alone is not conclusive, as both materials have low magnetic properties.
  4. Manufacturer’s Markings: Examine any inscriptions on the cable’s sheathing. Manufacturers often mark cables with identifiers like “CCA” to indicate their composition. Reviewing product datasheets or specifications can also provide definitive information.
  5. Scratch Test: Carefully scratch the exposed conductor. If the underlying metal is white or silver in color, it suggests the presence of aluminum, indicative of a CCA cable. This test should be done cautiously to avoid damaging the cable.
  6. Burn Test: In a controlled environment and as a last resort, applying heat to the cable can be revealing. When heated, the aluminum core of a CCA cable will melt at a lower temperature than copper.


Each of these methods provides valuable insights but should be used in conjunction with one another for accurate identification. While CCA cables can be effective for certain applications due to their lower cost and weight, they also have limitations, such as higher resistance and reduced conductivity, compared to pure copper cables. Therefore, correctly identifying CCA cable vs copper, including visual inspection, weighing, scratch test, magnetic test, and flame testing is crucial for ensuring safety, compliance, and optimal performance in cable applications (especially in critical applications like networking and power distribution). And finally, let’s talk about another thing that people want to know about CCA electrical cable.

Is Copper Clad Aluminum Wire Good for Automotive?

It has been argued that CCA wire for automotive use helps to reduce the overall weight of the car and improve fuel efficiency and range of electric and hybrid vehicles. And, from a budget perspective, it is more attractive than copper wire. But the fact is that while CCA conductors can be useful for less demanding, low-current applications such as audio system, their lower electrical conductivity and mechanical strength, coupled with potential issues in corrosion resistance and thermal expansion, limit CCA’s suitability, especially in high-current applications or environments with severe mechanical stress and temperature fluctuations, like starter motors or alternator.

Therefore, while CCA is more cost-effective, in most automotive systems, this benefit is outweighed by poor durability and insufficient current ratings. Pure copper wiring remains the preferred and safety choice for critical systems of the vehicle, and cca is a viable option for less demanding low-current applications.

Copper-Clad-Aluminum- Manufacturer

Bottom Line.

All in all, cable cca signification a cost-effective, lightweight alternative to pure copper wire in certain applications. When it comes to CCA vs pure copper selection, understanding the application’s specific requirements is critical to ensuring your electrical system’s safe and efficient operation.

It’s worth noting that while we’ve provided methods to identify CCA cables, they may not be foolproof. The best way to ensure you get the cable you require is to purchase from a reputable supplier, like ZW Cable, which provides quality-assured products with precise specifications.


What is the problem with CCA cable?

When it comes to CCA cables, issues related to installation. In particular, issues related to flexibility and bend radius are of particular importance. These cables are known for being brittle and prone to breakage. Numerous reports have shown that even a simple action such as adjusting a jumper wire in a patch panel or patch panel can lead to failure. It is important to realize that CCA cables have a very limited bending radius. Therefore we need to handle it carefully to avoid damage.

What is the difference between CCA and CU cable?

Solid copper is superior to copper clad aluminum (CCA) in every performance category. Solid copper has excellent electrical conductivity. It transmits signals better and faster and assures optimal performance in a variety of applications. In addition, it generates less heat during operation, increasing cable life and safety. Its flexibility is also another noteworthy advantage, especially favorable for installations requiring long runs.

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About Me
Richard Zi
Richard Zi

My name is Richard Zi, and serve as the General Manager of ZW Cable. With a deep and extensive background of more than 15 years in the cable industry, I am excited to share my wealth of knowledge and experience.ZW Cable is a renowned company in the field of cable manufacturing in world, we specialize in selecting the best cable sizes and effectively solving all your cable challenges. If you have any questions or needs regarding cable solutions, please contact me and I assure you of the highest standards of personalized and effective guidance and support.View All My Posts >>

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