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Choosing cables for networking or electricity always draws attention to Copper-Clad Aluminum (CCA) and Copper-Clad Steel (CCS). These cables will act more or less like solid copper cables; however, their internal structures, conductivity, and performance differ dramatically. One must be aware of this to decide on the required cable type.
Understanding the Basics
What is Solid Copper?
Solid copper cables are the most widely accepted standard for electrical and networking applications. With outstanding conductivity, excellent performance, and superb quality of life, these cables offer a world of Power over Ethernet (PoE) and long-lasting service.
What is Copper Clad Aluminum (CCA)?
CCA cables are characterized by an aluminum core plated with a thin copper layer. They were invented in the early 1960s to provide a cheaper alternative to solid copper. Lighter and more affordable, CCA cables have better electrical resistance, allowing better heat and signal loss over long lengths.
What is Copper Clad Steel (CCS)?
Copper-clad steel has a steel core with a thin coating of copper. This provides greater mechanical strength than CCA but also imposes a more significant problem: higher electrical resistance, which again affects performance. CCS, however, is often used in coaxial cables for telecommunication and broadcasting whenever the required high-frequency signal transmission is considered.
Key Differences: CCA vs. CCS vs. Solid Copper
| Feature | Solid Copper | Copper Clad Aluminum (CCA) | Copper Clad Steel (CCS) |
|---|---|---|---|
| Conductivity | Excellent | Moderate | Low |
| Durability | High | Moderate | High |
| Flexibility | Good | High | Low |
| Weight | Heavy | Light | Heavy |
| Cost | Expensive | Affordable | Affordable |
| Oxidation Resistance | High | Low | Low |
| Fire Hazard Risk | Low | Medium | High |
Pros and Cons of CCA and CCS Cables
Copper Clad Aluminum (CCA) Cables
✅ Lower Cost – More economical than pure copper.
✅ Lightweight – Easier to handle and install.
✅ Sufficient for Short-Distance Use – Ideal for low-speed applications.
❌ Higher Resistance – More signal loss over long distances.
❌ Less Durable – Prone to breakage and oxidation.
❌ Not Suitable for PoE – May overheat due to high resistance.
Copper Clad Steel (CCS) Cables
✅ Stronger and More Durable – Steel core for increased tensile strength.
✅ Cost-Effective for RF & Coaxial Applications – Suitable for high-frequency signals.
✅ Corrosion Resistant – Copper coating provides some protection.
❌ Poor Conductivity – Steel has significantly higher resistance than copper.
❌ High Resistance – Produces excessive heat and signal loss.
❌ Higher Fire Hazard Risk – Risk of overheating in power applications.
CCA vs. CCS: How to Tell the Difference?
If you’re not sure if the cable is CCA, CCS or pure copper, here are some quick identification tips:
- Check the Label – Most manufacturers print “CCA” or “CCS” on the cable jacket.
- Weight Test – CCA cables are noticeably lighter, while CCS cables are heavier.
- Cut and Inspect – A silver core means aluminum (CCA) or steel (CCS), not pure copper.
- Bend Test – CCA is softer than CCS, while CCS is stiffer.
Which Cable Should You Choose?
- For Home and Business Networks (Ethernet & PoE Applications): Solid copper cables are the best choice for reliability and performance.
- For High-Frequency Use (Coaxial & RF Cables): CCS performs well due to the skin effect.
- For Budget-Friendly, Short-Distance Applications, CCA is the logical choice for low-power setups.
- For Strength & Long-Distance Use: CCS offers better durability but is not ideal for high-power applications.
Conclusion
Although CCA and CCS can save some money, a compromise must be made with conductivity, durability, and safety. Solid copper has always been the standout certified option in applications where performance is paramount, such as high-speed networking and PoE capabilities. Budget-oriented individuals wishing for short-distance, low-power cabling would consider CCA a viable option. However, remember that a solid copper cable will save you time, money, and potential headaches.
Before purchasing, always check cable specifications to ensure they meet your performance needs!
Sam Wu is the Marketing Manager at Romtronic, holding a degree in Mechatronics. With 12 years of experience in sales within the electronic wiring harness industry, he manages marketing efforts across Europe. An expert in cable assembly, wiring harnesses, and advanced connectivity solutions, Sam simplifies complex technologies, offering clear, actionable advice to help you confidently navigate your electrical projects.
